Kegan Moneghetti MBBS (hons), FRACP, PhD

All Publications

• Molecular Choreography of Acute Exercise. Cell Contrepois, K., Wu, S., Moneghetti, K. J., Hornburg, D., Ahadi, S., Tsai, M. S., Metwally, A. A., Wei, E., Lee-McMullen, B., Quijada, J. V., Chen, S., Christle, J. W., Ellenberger, M., Balliu, B., Taylor, S., Durrant, M. G., Knowles, D. A., Choudhry, H., Ashland, M., Bahmani, A., Enslen, B., Amsallem, M., Kobayashi, Y., Avina, M., Perelman, D., Schüssler-Fiorenza Rose, S. M., Zhou, W., Ashley, E. A., Montgomery, S. B., Chaib, H., Haddad, F., Snyder, M. P. 2020; 181 (5): 1112?30.e16

  Abstract

  Acute physical activity leads to several changes in metabolic, cardiovascular, and immune pathways. Although studies have examined selected changes in these pathways, the system-wide molecular response to an acute bout of exercise has not been fully characterized. We performed longitudinal multi-omic profiling of plasma and peripheral blood mononuclear cells including metabolome, lipidome, immunome, proteome, and transcriptome from 36 well-characterized volunteers, before and after a controlled bout of symptom-limited exercise. Time-series analysis revealed thousands of molecular changes and an orchestrated choreography of biological processes involving energy metabolism, oxidative stress, inflammation, tissue repair, and growth factor response, as well as regulatory pathways. Most of these processes were dampened and some were reversed in insulin-resistant participants. Finally, we discovered biological pathways involved in cardiopulmonary exercise response and developed prediction models revealing potential resting blood-based biomarkers of peak oxygen consumption.

  View details for DOI 10.1016/j.cell.2020.04.043

  View details for PubMedID 32470399

• Echocardiographic Assessment of Left Ventricular Remodeling in American Style Footballers. International journal of sports medicine Moneghetti, K. J., Singh, T., Hedman, K., Christle, J. W., Kooreman, Z., Kobayashi, Y., Bouajila, S., Amsallem, M., Wheeler, M., Gerche, A. L., Ashley, E., Haddad, F. 2019

  Abstract

  Several athletic programs incorporate echocardiography during pre-participation screening of American Style Football (ASF) players with great variability in reported echocardiographic values. Pre-participation screening was performed in National Collegiate Athletic Association Division I ASF players from 2008 to 2016 at the Division of Sports Cardiology. The echocardiographic protocol focused on left ventricular (LV) mass, mass-to-volume ratio, sphericity, ejection fraction, and longitudinal Lagrangian strain. LV mass was calculated using the area-length method in end-diastole and end-systole. A total of two hundred and thirty players were included (18±1 years, 57% were Caucasian, body mass index 29±4kg/m2) after four players (2%) were excluded for pathological findings. Although there was no difference in indexed LV mass by race (Caucasian 78±11 vs. African American 81±10g/m2, p=0.089) or sphericity (Caucasian 1.81±0.13 vs. African American 1.78±0.14, p=0.130), the mass-to-volume ratio was higher in African Americans (0.91±0.09 vs. 0.83±0.08, p<0.001). No race-specific differences were noted in LV longitudinal Lagrangian strain. Player position appeared to have a limited role in defining LV remodeling. In conclusion, significant echocardiographic differences were observed in mass-to-volume ratio between African American and Caucasian players. These demographics should be considered as part of pre-participation screening.

  View details for DOI 10.1055/a-1014-2994

  View details for PubMedID 31791086

• A longitudinal big data approach for precision health NATURE MEDICINE Rose, S., Contrepois, K., Moneghetti, K. J., Zhou, W., Mishra, T., Mataraso, S., Dagan-Rosenfeld, O., Ganz, A. B., Dunn, J., Hornburg, D., Rego, S., Perelman, D., Ahadi, S., Sailani, M., Zhou, Y., Leopold, S. R., Chen, J., Ashland, M., Christle, J. W., Avina, M., Limcaoco, P., Ruiz, C., Tan, M., Butte, A. J., Weinstock, G. M., Slavich, G. M., Sodergren, E., McLaughlin, T. L., Haddad, F., Snyder, M. P. 2019; 25 (5): 792-+

  View details for DOI 10.1038/s41591-019-0414-6

  View details for Web of Science ID 000468247800023

• Value of Circulating Cytokine Profiling During Submaximal Exercise Testing in Myalgic Encephalomyelitis/Chronic Fatigue Syndrome. Scientific reports Moneghetti, K. J., Skhiri, M., Contrepois, K., Kobayashi, Y., Maecker, H., Davis, M., Snyder, M., Haddad, F., Montoya, J. G. 2018; 8 (1): 2779

  Abstract

  Myalgic Encephalomyelitis or Chronic Fatigue Syndrome (ME/CFS) is a heterogeneous syndrome in which patients often experience severe fatigue and malaise following exertion. Immune and cardiovascular dysfunction have been postulated to play a role in the pathophysiology. We therefore, examined whether cytokine profiling or cardiovascular testing following exercise would differentiate patients with ME/CFS. Twenty-four ME/CFS patients were matched to 24 sedentary controls and underwent cardiovascular and circulating immune profiling. Cardiovascular analysis included echocardiography, cardiopulmonary exercise and endothelial function testing. Cytokine and growth factor profiles were analyzed using a 51-plex Luminex bead kit at baseline and 18?hours following exercise. Cardiac structure and exercise capacity were similar between groups. Sparse partial least square discriminant analyses of cytokine profiles 18?hours post exercise offered the most reliable discrimination between ME/CFS and controls (??=?0.62(0.34,0.84)). The most discriminatory cytokines post exercise were CD40L, platelet activator inhibitor, interleukin 1-?, interferon-? and CXCL1. In conclusion, cytokine profiling following exercise may help differentiate patients with ME/CFS from sedentary controls.

  View details for PubMedID 29426834

• Value of Strain Imaging and Maximal Oxygen Consumption in Patients with Hypertrophic Cardiomyopathy American Journal of Cardiology Moneghetti , K. J., Stolfo, D., Christle, J. W., Kobayashi , Y., Finocchiaro, G., Sinagra, G., Myers , J., Ashely, E., Wheeler, M., Haddad, F. 2017

  View details for DOI 10.1016/j.amjcard.2017.06.070

• Incremental value of right heart metrics and exercise performance to well-validated risk scores in dilated cardiomyopathy. European heart journal cardiovascular Imaging Moneghetti, K. J., Giraldeau, G., Wheeler, M. T., Kobayashi, Y., Vrtovec, B., Boulate, D., Kuznetsova, T., Schnittger, I., Wu, J. C., Myers, J., Ashley, E., Haddad, F. 2017

  Abstract

  Risk stratification in heart failure (HF) relies on several established clinical risk scores, however, myocardial deformation, right heart metrics, and exercise performance have not usually been considered. This study sought to assess the incremental value of advanced echocardiographic and cardiopulmonary exercise testing (CPX) parameters to validated risk scores in HF.The Meta-Analysis Global Group in Chronic Heart Failure (MAGGIC) and Metabolic Exercise Test Data Combined with Cardiac and Kidney Indexes (MECKI) scores were applied to 208 ambulatory patients with dilated cardiomyopathy (DCM) who completed echocardiography in conjunction with CPX as part of the Stanford Exercise Testing registry. Patients were followed for the composite end point of death, heart transplant, left ventricular device implantation, and hospitalization for acute HF. Mean age, left ventricular ejection fraction (LVEF), and left ventricular global longitudinal strain (LVGLS) were 47?±?13?years, 33?±?13%, and -10.6?±?4.4%, respectively, while right ventricular free-wall longitudinal strain was -18.8?±?5.5%. Partial correlation mapping identified strong correlations between LVEF, LVGLS, and LV systolic strain rate, with a moderate correlation between these metrics and peak VO2. Over a median follow up of 5.3?years, the composite end point occurred in 60 patients. Cox proportional hazards identified MAGGIC score [hazard ratio (HR) (2.04 [1.39-3.01], P?

  View details for PubMedID 28977353

• Impact of the distance from the chest wall to the heart on surface ECG voltage in athletes. BMJ open sport & exercise medicine Hedman, K., Patti, A., Moneghetti, K. J., Hsu, D., Christle, J. W., Ashley, E., Hadley, D., Haddad, F., Froelicher, V. 2020; 6 (1): e000696

  Abstract

  Objective: Available ECG criteria for detection of left ventricular (LV) hypertrophy have been reported to have limited diagnostic capability. Our goal was to describe how the distance between the chest wall and the left ventricle determined by echocardiography affected the relationship between ECG voltage and LV mass (LVM) in athletes.Methods: We retrospectively evaluated digitised ECG data from college athletes undergoing routine echocardiography as part of their preparticipation evaluation. Along with LV mass and volume, we determined the chest wall-LV distance in the parasternal short-axis and long-axis views from two-dimensional transthoracic echocardiographic images and explored the relation with ECG QRS voltages in all leads, as well as summed voltages as included in six major ECG-LVH criteria.Results: 239 athletes (43 women) were included (age 19±1years). In men, greater LV-chest wall distance was associated with higher R-wave amplitudes in leads aVL and I (R=0.20and R=0.25, both p<0.01), while in women greater distance was associated with higher R-amplitudes in V5 and V6 (R=0.42and R=0.34, both p<0.01). In women, the chest wall-LV distance was the only variable independently (and positively) associated with R V5 voltage, while LVM, height and weight contributed to the relationship in men.Conclusions: The chest wall-LV distance was weakly associated with ECG voltage in athletes. Inconsistent associations in men and women imply different intrathoracic factors affecting impedance and conductance between sexes. This may help explain the poor relationship between QRS voltage and LVM in athletes.

  View details for DOI 10.1136/bmjsem-2019-000696

  View details for PubMedID 32201618

• Incremental value of diastolic stress test in identifying subclinical heart failure in patients with diabetes mellitus. European heart journal cardiovascular Imaging Nishi, T., Kobayashi, Y., Christle, J. W., Cauwenberghs, N., Boralkar, K., Moneghetti, K., Amsallem, M., Hedman, K., Contrepois, K., Myers, J., Mahaffey, K. W., Schnittger, I., Kuznetsova, T., Palaniappan, L., Haddad, F. 2020

  Abstract

  Resting echocardiography is a valuable method for detecting subclinical heart failure (HF) in patients with diabetes mellitus (DM). However, few studies have assessed the incremental value of diastolic stress for detecting subclinical HF in this population.Asymptomatic patients with Type 2 DM were prospectively enrolled. Subclinical HF was assessed using systolic dysfunction (left ventricular longitudinal strain <16% at rest and <19% after exercise in absolute value), abnormal cardiac morphology, or diastolic dysfunction (E/e' > 10). Metabolic equivalents (METs) were calculated using treadmill speed and grade, and functional capacity was assessed by percent-predicted METs (ppMETs). Among 161 patients studied (mean age of 59?±?11?years and 57% male sex), subclinical HF was observed in 68% at rest and in 79% with exercise. Among characteristics, diastolic stress had the highest yield in improving detection of HF with 57% of abnormal cases after exercise and 45% at rest. Patients with revealed diastolic dysfunction during stress had significantly lower exercise capacity than patients with normal diastolic stress (7.3?±?2.1 vs. 8.8?±?2.5, P?10 (beta = -0.17) were independently associated with peak METs (combined R2 = 0.46). A network correlation map revealed the connectivity of peak METs and diastolic properties as central features in patients with DM.Diastolic stress test improves the detection of subclinical HF in patients with diabetes mellitus.

  View details for DOI 10.1093/ehjci/jeaa070

  View details for PubMedID 32386203

• Utility of High-Sensitivity and Conventional Troponin in Patients Undergoing Transcatheter Aortic Valve Replacement: Incremental Prognostic Value to B-type Natriuretic Peptide. Scientific reports Kobayashi, Y., Kim, J. B., Moneghetti, K. J., Fischbein, M., Lee, A., Watkins, C. A., Yeung, A. C., Liang, D., Ozen, M. O., Demirci, U., Bowen, R., Fearon, W. F., Haddad, F. 2019; 9 (1): 14936

  Abstract

  High-sensitivity Troponin (hs-Tn) has emerged as a useful marker for patients with myocardial injury or heart failure. However, few studies have compared intermediate and hs-Tn in patients undergoing transcatheter aortic valve replacement (TAVR). Moreover, there remains uncertainty of which thresholds are the most useful for discriminating ventricular dysfunction or outcome. In this study we prospectively enrolled 105 patients with severe aortic stenosis (AS) who underwent TAVR as well as blood sampling for high-sensitivity (hs-TnI) and conventional troponin I (EXL-LOCI and RXL) assessment. Patients underwent comprehensive pre-procedure echocardiography. Ventricular dysfunction was defined using left ventricular mass index (LVMI), LV global longitudinal strain (LVGLS) and LV end-diastolic pressure. The mean age was 84.0±8.7 years old and 60% were male sex with mean transaortic pressure gradient of 50.1±16.0mmHg and AVA of 0.63±0.19cm2. When using a threshold of 6ng/L, 77% had positive hs-TnI while 27% had positive hs-TnI using recommended thresholds (16ng/L for female and 34ng/L for male). Troponin levels were higher in the presence of abnormal LV phenotypes. The strongest correlate of troponin was LVMI. During median follow-up of 375 days, 21 patients (20%) died. Lower threshold of hs-TnI and EXL-TnI was more discriminatory for overall mortality (Log-rank P=0.03 for both), while higher threshold of hs-TnI (p=0.75) and RXL-TnI were not (p=0.30). Combining hs-TnI and BNP improved to predict long-term outcome (p=0.004). In conclusion, hs-TnI levels correlated with the degree of LV dysfunction phenotypes. Furthermore, applying a lower threshold for hs-TnI performed better for outcome prediction than a recommended threshold in patients undergoing TAVR. Combining hs-TnI with BNP helped better risk stratification.

  View details for DOI 10.1038/s41598-019-51371-x

  View details for PubMedID 31624275

• Limitations of Electrocardiography for Detecting Left Ventricular Hypertrophy or Concentric Remodeling in Athletes. The American journal of medicine Hedman, K., Moneghetti, K. J., Hsu, D., Christle, J. W., Patti, A., Ashley, E., Hadley, D., Haddad, F., Froelicher, V. 2019

  Abstract

  BACKGROUND: Electrocardiography (ECG) is used to screen for left ventricular hypertrophy (LVH), but common ECG-LVH criteria have been found less effective in athletes. The purpose of this study was to comprehensively evaluate the value of ECG for identifying athletes with left ventricular hypertrophy and/or a concentric cardiac phenotype.METHODS: A retrospective analysis of 196 male division 1 college athletes routinely screened with ECG and echocardiography within The Stanford Athletic Cardiovascular Screening Program was performed. Left-ventricular mass and volume were determined using echocardiography. Left ventricular hypertrophy was defined as left ventricular mass >102 g/m2; a concentric cardiac phenotype as left ventricular mass/volume (M/V) ?1.05 g/mL. Twelve-lead ECGs including high-resolution time intervals and QRS voltages were obtained. 37 previously published ECG-LVH criteria were applied, of which the majority have never been evaluated in athletes. C-statistics, including area under the receiver operating curve (AUC), and likelihood ratios were calculated.RESULTS: ECG lead voltages were poorly associated with left ventricular mass (r=0.18-0.30) and M/V (r=0.15-0.25). The proportion of athletes with ECG-LVH was 0-74% across criteria, with sensitivity and specificity ranging between 0-91% and 27-99.5%, respectively. The average AUC of the criteria in identifying the 11 athletes with left ventricular hypertrophy was 0.57 (95% CI 0.56-0.59), while the average AUC for identifying the eight athletes with a concentric phenotype was 0.59 (95% CI 0.56-0.62).CONCLUSION: The diagnostic capacity of all ECG-LVH criteria were inadequate and therefore not clinically useful in screening for left ventricular hypertrophy or a concentric phenotype in athletes. This is probably due to the weak association between left ventricular mass and ECG voltage.

  View details for DOI 10.1016/j.amjmed.2019.06.028

  View details for PubMedID 31738876

• Blood pressure in athletic preparticipation evaluation and the implication for cardiac remodelling. Heart (British Cardiac Society) Hedman, K., Moneghetti, K. J., Christle, J. W., Bagherzadeh, S. P., Amsallem, M., Ashley, E., Froelicher, V., Haddad, F. 2019

  Abstract

  OBJECTIVES: To explore blood pressure (BP) in athletes at preparticipation evaluation (PPE) in the context of recently updated US and European hypertension guidelines, and to determine the relationship between BP and left ventricular (LV) remodelling.METHODS: In this retrospective study, athletes aged 13-35 years who underwent PPE facilitated by the Stanford Sports Cardiology programme were considered. Resting BP was measured in both arms; repeated once if ?140/90mm Hg. Athletes with abnormal ECGs or known hypertension were excluded. BP was categorised per US/European hypertension guidelines. In a separate cohort of athletes undergoing routine PPE echocardiography, we explored the relationship between BP and LV remodelling (LV mass, mass/volume ratio, sphericity index) and LV function.RESULTS: In cohort 1 (n=2733, 65.5% male), 34.3% of athletes exceeded US hypertension thresholds. Male sex (B=3.17, p<0.001), body mass index (BMI) (B=0.80, p<0.001) and height (B=0.25, p<0.001) were the strongest independent correlates of systolic BP. In the second cohort (n=304, ages 17-26), systolic BP was an independent correlate of LV mass/volume ratio (B=0.002, p=0.001). LV longitudinal strain was similar across BP categories, while higher BP was associated with slower early diastolic relaxation.CONCLUSION: In a large contemporary cohort of athletes, one-third presented with BP levels above the current US guidelines' thresholds for hypertension, highlighting that lowering the BP thresholds at PPE warrants careful consideration as well as efforts to standardise measurements. Higher systolic BP was associated with male sex, BMI and height and with LV remodelling and diastolic function, suggesting elevated BP in athletes during PPE may signify a clinically relevant condition.

  View details for DOI 10.1136/heartjnl-2019-314815

  View details for PubMedID 31142598

• Athletic Remodeling in Female College Athletes: The "Morganroth Hypothesis" Revisited CLINICAL JOURNAL OF SPORT MEDICINE Kooreman, Z., Giraldeau, G., Finocchiaro, G., Kobayashi, Y., Wheeler, M., Perez, M., Moneghetti, K., Oxborough, D., George, K. P., Myers, J., Ashley, E., Haddad, F. 2019; 29 (3): 224?31

  View details for DOI 10.1097/JSM.0000000000000501

  View details for Web of Science ID 000480736100009

• COMPARISON OF UNITED STATES AND EUROPEAN CRITERIA FOR HYPERTENSION IN A LARGE COHORT OF COMPETITIVE ATHLETES EXAMINED AS PART OF PRE-PARTICIPATION EVALUATION Hedman, K., Moneghetti, K., Christle, J. W., Bagherzadeh, S. P., Haddad, F., Ashley, E. A., Froelicher, V. ELSEVIER SCIENCE INC. 2019: 446

  View details for Web of Science ID 000460565900446

• INDEPENDENT PROGNOSTIC VALUES OF CLINICAL RISK SCORES, RIGHT VENTRICULAR SYSTOLIC PRESSURE, AND N-TERMINAL PRO-B-TYPE PEPTIDE IN HEART FAILURE WITH PRESERVED EJECTION FRACTION: INSIGHTS FROM SUPERVISED AND UNSUPERVISED MODELS Tremblay-Gravel, M., Kobayashi, Y., Boralkar, K., Li, X., Bouajila, S., Nishi, T., Amsallem, M., Moneghetti, K., Selej, M., Ozen, M., Demirci, U., Ashley, E. A., Wheeler, M., Knowlton, K., Kouznetsova, T., Haddad, F. ELSEVIER SCIENCE INC. 2019: 718

  View details for Web of Science ID 000460565900718

• RESTING BLOOD PRESSURE IN 2881 ATHLETES AGED 9-35 YEARS OF AGE AND THE RELATION TO SEX, AGE, BODY SIZE, AND AFRO-AMERICAN DESCENT Bagherzadeh, S. P., Hedman, K., Christle, J. W., Moneghetti, K., Ashley, E. A., Haddad, F., Froelicher, V. ELSEVIER SCIENCE INC. 2019: 447

  View details for Web of Science ID 000460565900447

• Right ventricular load adaptability metrics in patients undergoing left ventricular assist device implantation JOURNAL OF THORACIC AND CARDIOVASCULAR SURGERY Amsallem, M., Aymami, M., Hiesinger, W., Zeigler, S., Moneghetti, K., Marques, M., Teuteberg, J., Ha, R., Banerjee, D., Haddad, F. 2019; 157 (3): 1023-+

  View details for DOI 10.1016/j.jtcvs.2018.08.095

  View details for Web of Science ID 000458822000083

• Time based versus strain based myocardial performance indices in hypertrophic cardiomyopathy, the merging role of left atrial strain EUROPEAN HEART JOURNAL-CARDIOVASCULAR IMAGING Kobayashi, Y., Moneghetti, K. J., Bouajila, S., Stolfo, D., Finocchiaro, G., Kuznetsova, T., Liang, D., Schnittger, I., Ashley, E., Wheeler, M., Haddad, F. 2019; 20 (3): 334?42

  View details for DOI 10.1093/ehjci/jey097

  View details for Web of Science ID 000481422400015

• Athletic Remodeling in Female College Athletes: The "Morganroth Hypothesis" Revisited. Clinical journal of sport medicine : official journal of the Canadian Academy of Sport Medicine Kooreman, Z., Giraldeau, G., Finocchiaro, G., Kobayashi, Y., Wheeler, M., Perez, M., Moneghetti, K., Oxborough, D., George, K. P., Myers, J., Ashley, E., Haddad, F. 2019; 29 (3): 224?31

  Abstract

  There is limited data regarding ventricular remodeling in college female athletes, especially when appropriate scaling of cardiac dimensions to lean body mass (LBM) is considered. Moreover, it is not well established whether cardiac remodeling in female athletes is a balanced process with proportional increase in left ventricular (LV) mass and volume or the right and LV size.During the preparticipation competitive screening, 72 female college athletes volunteered to undergo dual energy x-ray absorptiometry scan for quantification of LBM and comprehensive 2D echocardiography including assessment of longitudinal myocardial strain. The athletes were divided in 2 groups according to the intensity of the dynamic and static components of their sport categories, ie, a higher intensity dynamic and resistive group (n = 37 participating in rowing, water polo and lacrosse) and a lower intensity group (n = 35, participating in short distance running, sailing, synchronized swimming, and softball). In addition, we recruited a group of 31 age-matched nonathlete controls.The mean age of the study population was 18.7 ± 1.0 years. When scaled to body surface area, the higher intensity group had 17.1 ± 3.6% (P < 0.001) greater LV mass when compared with the lower intensity group and 21.7 ± 4.0% (P < 0.001) greater LV mass than the control group. The differences persisted after scaling to LBM with 14.2 ± 3.2% (P < 0.001) greater LV mass in the higher intensity group. By contrast, there was no difference in any of the relative remodeling indices including the LV mass to volume ratio, right to LV area ratio, or left atrial to LV volume ratio (P > 0.50 for all). In addition, no significant difference was noted among the 3 groups in LV ejection fraction (P = 0.22), LV global longitudinal strain (P = 0.55), LV systolic strain rate (P = 0.62), or right ventricular global longitudinal strain (P = 0.61).Female collegiate athletes participating in higher intensity dynamic and resistive sports have higher indexed LV mass even when scaled to LBM. The remodeling process does however appear to be a balanced process not only at the intraventricular level but also at the interventricular and atrioventricular levels.

  View details for PubMedID 31033616

• Interval Endurance and Resistance Training as Part of a Community-Based Secondary Prevention Program for Patients With Diabetes Mellitus and Coronary Artery Disease. Journal of cardiopulmonary rehabilitation and prevention Christle, J. W., Knapp, S., Geisberger, M., Cervenka, M., Moneghetti, K., Myers, J., Halle, M., Boscheri, A. 2019

  Abstract

  High-intensity interval training (HIIT) has been observed to improve health and fitness in patients with cardiovascular disease. High-intensity interval training may not be appropriate in community-based settings. Moderate-intensity interval training (MIIT) and resistance training (RT) are emerging as effective alternatives to HIIT. These have not been well investigated in a community-based cardiac maintenance program.Patients with coronary artery disease and/or diabetes mellitus participated in clinical examinations and a 6-mo exercise program. Center-based MIIT and home-based moderate continuous intensity exercise were performed for 3-5 d/wk for 30-40 min/session. RT, nutritional counseling, coping, and behavioral change strategies were offered to all patients. Within-group changes in clinical metrics and exercise performance were assessed on a per-protocol basis after 6 mo.Two hundred ninety-two patients (74%) concluded the 6-mo program. There were no serious adverse events. The peak oxygen uptake and peak workload increased significantly, 21.8 ± 6.1 to 22.8 ± 6.3 mL/kg/min and 128 ± 39 to 138 ± 43 W, respectively (both P < .001). Submaximal exercise performance increased from 68 ± 19 to 73 ± 22 W (P < .001). Glycated hemoglobin decreased from 6.57 ± 0.93% to 6.43 ± 0.12%, (P = .023). Daily injected insulin dosage was reduced from 42 IU (interquartile range: 19.0, 60.0) to 26 IU (interquartile range: 0, 40.3, P < .001).MIIT and RT were feasible and effective in a community-based cardiac maintenance program for patients with cardiovascular disease, improving exercise performance, and blood glucose control.

  View details for DOI 10.1097/HCR.0000000000000426

  View details for PubMedID 31192806

• Cardiopulmonary Exercise Testing, Impedance Cardiography and Reclassification of Risk in Patients Referred for Heart Failure Evaluation. Journal of cardiac failure Myers, J., Christle, J. W., Tun, A., Yilmaz, B., Moneghetti, K. J., Yuen, E., Soofi, M., Ashley, E. 2019

  Abstract

  An impaired cardiac output response to exercise is a hallmark of chronic heart failure (HF). We determined the extent to which impedance cardiography (ICG) during exercise in combination with cardiopulmonary exercise test (CPX) responses reclassified risk for adverse events in patients with HF.CPX and ICG were performed in 1,236 consecutive patients (48±15 years) evaluated for HF. Clinical, ICG and CPX variables were acquired at baseline and subjects were followed for the composite outcome of cardiac-related death, hospitalization for worsening HF, cardiac transplantation, and left ventricular assist device (LVAD) implantation. Cox proportional hazards analyses including clinical, non-invasive hemodynamic, and CPX variables were performed to determine their association with the composite endpoint. Net reclassification improvement (NRI) was calculated to quantify the impact of adding hemodynamic responses to a model including established CPX risk markers on reclassifying risk. There were 422 events. Among CPX variables, peak VO2 and indices of ventilatory inefficiency (VE/VCO2 slope, oxygen uptake efficiency slope) were significant predictors of risk for adverse events. Among hemodynamic variables, change in cardiac index, peak cardiac time interval, and peak left cardiac work index were the strongest predictors of risk. Having five impaired CPX and ICG responses to exercise yielded a seven-fold higher risk for adverse events compared to having no abnormal responses. Combining ICG responses to CPX resulted in NRIs ranging between 0.34 to 0.89, attributable to better reclassification of events.Cardiac hemodynamics determined by ICG complement established CPX measures in reclassifying risk among patients with HF.

  View details for DOI 10.1016/j.cardfail.2019.08.013

  View details for PubMedID 31454685

• Improving risk stratification in heart failure with preserved ejection fraction by combining two validated risk scores. Open heart Boralkar, K. A., Kobayashi, Y., Moneghetti, K. J., Pargaonkar, V. S., Tuzovic, M., Krishnan, G., Wheeler, M. T., Banerjee, D., Kuznetsova, T., Horne, B. D., Knowlton, K. U., Heidenreich, P. A., Haddad, F. 2019; 6 (1): e000961

  Abstract

  Introduction: The Intermountain Risk Score (IMRS) was developed and validated to predict short-term and long-term mortality in hospitalised patients using demographics and commonly available laboratory data. In this study, we sought to determine whether the IMRS also predicts all-cause mortality in patients hospitalised with heart failure with preserved ejection fraction (HFpEF) and whether it is complementary to the Get with the Guidelines Heart Failure (GWTG-HF) risk score or N-terminal pro-B-type natriuretic peptide (NT-proBNP).Methods and results: We used the Stanford Translational Research Integrated Database Environment to identify 3847 adult patients with a diagnosis of HFpEF between January 1998 and December 2016. Of these, 580 were hospitalised with a primary diagnosis of acute HFpEF. Mean age was 76±16 years, the majority being female (58%), with a high prevalence of diabetes mellitus (36%) and a history of coronary artery disease (60%). Over a median follow-up of 2.0 years, 140 (24%) patients died. On multivariable analysis, the IMRS and GWTG-HF risk score were independently associated with all-cause mortality (standardised HRs IMRS (1.55 (95% CI 1.27 to 1.93)); GWTG-HF (1.60 (95% CI 1.27 to 2.01))). Combining the two scores, improved the net reclassification over GWTG-HF alone by 36.2%. In patients with available NT-proBNP (n=341), NT-proBNP improved the net reclassification of each score by 46.2% (IMRS) and 36.3% (GWTG-HF).Conclusion: IMRS and GWTG-HF risk scores, along with NT-proBNP, play a complementary role in predicting outcome in patients hospitalised with HFpEF.

  View details for DOI 10.1136/openhrt-2018-000961

  View details for PubMedID 31217994

• Value of Neutrophil to Lymphocyte Ratio and Its Trajectory in Patients Hospitalized With Acute Heart Failure and Preserved Ejection Fraction. The American journal of cardiology Boralkar, K. A., Kobayashi, Y., Amsallem, M., Ataam, J. A., Moneghetti, K. J., Cauwenberghs, N., Horne, B. D., Knowlton, K. U., Maecker, H., Kuznetsova, T., Heidenreich, P. A., Haddad, F. 2019

  Abstract

  The neutrophil to lymphocyte ratio (NLR) has been proposed as a simple and routinely obtained marker of inflammation. This study sought to determine whether the NLR on admission as well as NLR trajectory would be complementary to the Get with the Guidelines Heart Failure (GWTG-HF) risk score in patients hospitalized with acute heart failure with preserved ejection fraction (HFpEF).Using the Stanford Translational Research Database, we identified 443 patients between January 2002 and December 2013 hospitalized with acute HFpEF and with complete data of NLR both on admission and at discharge. The primary endpoint was all-cause mortality. Mean age was 77?±?16 years, 58% were female, with a high prevalence of diabetes mellitus (35.4%), coronary artery disease (58.2%), systemic hypertension (96.6%) and history of atrial fibrillation (57.5%). Over a median follow-up of 2.2 years, 121 (27.3%) patients died. The median NLR on admission was 6.5 (IQR 3.6?-?11.1); a majority of patients decreased their NLR during the course of hospitalization. On multivariable Cox modeling, both NLR on admission (HR 1.18 95% CI (1.00?-?.38), p?=?0.04) and absolute NLR trajectory (HR 1.26 95% CI (1.10?-?1.45), p?=?0.001) were shown to be incremental to GWTG-HF risk score (p?

  View details for DOI 10.1016/j.amjcard.2019.10.020

  View details for PubMedID 31753313

• Approaching Higher Dimension Imaging Data Using Cluster-Based Hierarchical Modeling in Patients with Heart Failure Preserved Ejection Fraction. Scientific reports Kobayashi, Y., Tremblay-Gravel, M., Boralkar, K. A., Li, X., Nishi, T., Amsallem, M., Moneghetti, K. J., Bouajila, S., Selej, M., Ozen, M. O., Demirci, U., Ashley, E., Wheeler, M., Knowlton, K. U., Kouznetsova, T., Haddad, F. 2019; 9 (1): 10431

  Abstract

  Heart failure with preserved ejection fraction (HFpEF) is a major cause of morbidity and mortality, accounting for the majority of heart failure (HF) hospitalization. To identify the most complementary predictors of mortality among clinical, laboratory and echocardiographic data, we used cluster based hierarchical modeling. Using Stanford Translational Research Database, we identified patients hospitalized with HFpEF between 2005 and 2016 in whom echocardiogram and NT-proBNP were both available at the time of admission. Comprehensive echocardiographic assessment including left ventricular longitudinal strain (LVLS), right ventricular function and right ventricular systolic pressure (RVSP) was performed. The outcome was defined as all-cause mortality. Among patients identified, 186 patients with complete echocardiographic assessment were included in the analysis. The cohort included 58% female, with a mean age of 78.7?±?13.5 years, LVLS of -13.3?±?2.5%, an estimated RVSP of 38?±?13?mmHg. Unsupervised cluster analyses identified six clusters including ventricular systolic-function cluster, diastolic-hemodynamic cluster, end-organ function cluster, vital-sign cluster, complete blood count and sodium clusters. Using a stepwise hierarchical selection from each cluster, we identified NT-proBNP (standard hazard ratio [95%CI]?=?1.56 [1.17-2.08]) and RVSP (1.37 [1.09-1.78]) as independent correlates of outcome. When adding these parameters to the well validated Get with the Guideline Heart Failure risk score, the Chi-square was significantly improved (p?=?0.01). In conclusion, NT-proBNP and RVSP were independently predictive in HFpEF among clinical, imaging, and biomarker parameters. Cluster-based hierarchical modeling may help identify the complementally predictive parameters in small cohorts with higher dimensional clinical data.

  View details for DOI 10.1038/s41598-019-46873-7

  View details for PubMedID 31320698

• The Incremental Value of Right Ventricular Size and Strain in the Risk Assessment of Right Heart Failure Post - Left Ventricular Assist Device Implantation. Journal of cardiac failure Aymami, M., Amsallem, M., Adams, J., Sallam, K., Moneghetti, K., Wheeler, M., Hiesinger, W., Teuteberg, J., Weisshaar, D., Verhoye, J., Woo, Y. J., Ha, R., Haddad, F., Banerjee, D. 2018; 24 (12): 823?32

  Abstract

  BACKGROUND: Right heart failure (RHF) after left ventricular assist device (LVAD) implantation is associated with high morbidity and mortality. Existing risk scores include semiquantitative evaluation of right ventricular (RV) dysfunction. This study aimed to determine whether quantitative evaluation of both RV size and function improve risk stratification for RHF after LVAD implantation beyond validated scores.METHODS AND RESULTS: From 2009 to 2015, 158 patients who underwent implantation of continuous-flow devices who had complete echocardiographic and hemodynamic data were included. Quantitative RV parameters included RV end-diastolic (RVEDAI) and end-systolic area index, RV free-wall longitudinal strain (RVLS), fractional area change, tricuspid annular plane systolic excursion, and right atrial area and pressure. Independent correlates of early RHF (<30 days) were determined with the use of logistic regression analysis. Mean age was 56 ± 13 years, with 79% male; 49% had INTERMACS profiles ?2. RHF occurred in 60 patients (38%), with 20 (13%) requiring right ventricular assist device. On multivariate analysis, INTERMACS profiles (adjusted odds ratio 2.38 [95% confidence interval [CI] 1.47-3.85]), RVEDAI (1.61 [1.08-2.32]), and RVLS (2.72 [1.65-4.51]) were independent correlates of RHF (all P < .05). Both RVLS and RVEDAI were incremental to validated risk scores (including the EUROMACS score) for early RHF after LVAD (all P < .01).CONCLUSIONS: RV end-diastolic and strain are complementary prognostic markers of RHF after LVAD implantation.

  View details for PubMedID 30539717

• The Incremental Value of Right Ventricular Size and Strain in the Risk Assessment of Right Heart Failure Post - Left Ventricular Assist Device Implantation JOURNAL OF CARDIAC FAILURE Aymami, M., Amsallem, M., Adams, J., Sallam, K., Moneghetti, K., Wheeler, M., Hiesinger, W., Teuteberg, J., Weisshaar, D., Verhoye, J., Woo, Y., Ha, R., Haddad, F., Banerjee, D. 2018; 24 (12): 823?32

  View details for DOI 10.1016/j.cardfail.2018.10.012

  View details for Web of Science ID 000454671800003

• Heart Rate Variability: An Old Metric with New Meaning in the Era of Using mHealth technologies for Health and Exercise Training Guidance. Part Two: Prognosis and Training. Arrhythmia & electrophysiology review Singh, N., Moneghetti, K. J., Christle, J. W., Hadley, D., Froelicher, V., Plews, D. 2018; 7 (4): 247?55

  Abstract

  It has been demonstrated that heart rate variability (HRV) is predictive of all-cause and cardiovascular mortality using clinical ECG recordings. This is true for rest, exercise and ambulatory HRV clinical ECG device recordings in prospective cohorts. Recently, there has been a rapid increase in the use of mobile health technologies (mHealth) and commercial wearable fitness devices. Most of these devices use ECG or photo-based plethysmography and both are validated for providing accurate heart rate measurements. This offers the opportunity to make risk information from HRV more widely available. The physiology of HRV and the available technology by which it can be assessed has been summarised in Part 1 of this review. In Part 2 the association between HRV and risk stratification is addressed by reviewing the current evidence from data acquired by resting ECG, exercise ECG and medical ambulatory devices. This is followed by a discussion of the use of HRV to guide the training of athletes and as a part of fitness programmes.

  View details for DOI 10.15420/aer.2018.30.2

  View details for PubMedID 30588312

• Cytokines profile of reverse cardiac remodeling following transcatheter aortic valve replacement INTERNATIONAL JOURNAL OF CARDIOLOGY Kim, J., Kobayashi, Y., Kuznetsova, T., Moneghetti, K. J., Brenner, D. A., O'Malley, R., Dao, C., Wu, J. C., Fischbein, M., Miller, D., Yeung, A. C., Liang, D., Haddad, F., Fearon, W. F. 2018; 270: 83?88

  View details for DOI 10.1016/j.ijcard.2018.05.020

  View details for Web of Science ID 000444609000021

• Cytokines profile of reverse cardiac remodeling following transcatheter aortic valve replacement. International journal of cardiology Kim, J. B., Kobayashi, Y., Kuznetsova, T., Moneghetti, K. J., Brenner, D. A., O'Malley, R., Dao, C., Wu, J. C., Fischbein, M., Craig Miller, D., Yeung, A. C., Liang, D., Haddad, F., Fearon, W. F. 2018; 270: 83?88

  Abstract

  OBJECTIVE: Previous studies have suggested that cytokines and growth factors may predict ventricular recovery following aortic valve replacement (AVR). The primary objective of this study was to identify cytokines that predict ventricular recovery following transcatheter AVR (TAVR).METHODS: We prospectively enrolled 121 consecutive patients who underwent TAVR. Standard echocardiographic assessment at baseline, 1-month and 1-year after TAVR included left ventricular (LV) mass index (LVMI) and global longitudinal strain (GLS). Blood samples were obtained at the time of the procedure to measure cytokines using a 63-plex Luminex platform. Partial least squares-discriminant analysis was performed to identify cytokines associated with ventricular remodeling and function at baseline as well as 1?year after TAVR.RESULTS: The mean age was 84?±?9?years, with a majority of male subjects (59%), a mean LVMI of 120.4?±?45.1?g/m2 and LVGLS of -13.0?±?3.2%. On average, LV mass decreased by 8.1% and GLS improved by 20.3% at 1?year following TAVR. Among cytokines assayed, elevated hepatocyte growth factor (HGF) emerged as a common factor significantly associated with worse baseline LVMI and GLS as well as reduced ventricular recovery (p?

  View details for PubMedID 30219541

• Forgotten No More A Focused Update on the Right Ventricle in Cardiovascular Disease JACC-HEART FAILURE Amsallem, M., Mercier, O., Kobayashi, Y., Moneghetti, K., Haddad, F. 2018; 6 (11): 891?903

  View details for DOI 10.1016/j.jchf.2018.05.022

  View details for Web of Science ID 000448611100001

• Forgotten No More: A Focused Update on the Right Ventricle in CardiovascularDisease. JACC. Heart failure Amsallem, M., Mercier, O., Kobayashi, Y., Moneghetti, K., Haddad, F. 2018

  Abstract

  In the last decade, there has been renewed interest in the study of the right ventricle. It is now well established that right ventricular function is a strong predictor of mortality, not only in heart failure but also in pulmonary hypertension, congenital heart disease, and cardiothoracic surgery. The right ventricle is part of a cardiopulmonary unit with connections to the pulmonary circulation, venous return, atria, and left ventricle. In this context, ventriculoarterial coupling, interventricular interactions, and pericardial constraint become important to understand right ventricular adaptation to injury or abnormal loading conditions. This state-of-the-art review summarizes major advances that occurred in the field of right ventricular research over the last decade. The first section focuses on right ventricular physiology and pulmonary circulation. The second section discusses the emerging data on right ventricular phenotyping, highlighting the importance of myocardial deformation (strain) imaging and assessment of end-systolic dimensions. The third section reviews recent clinical trials involving patients at risk for or with established right ventricular failure, focusing on beta blockade, phosphodiesterase inhibition, and mechanical support of the failing right heart. The final section presents a perspective on active areas of research that are most likely to translate in clinical practice in the next decade.

  View details for PubMedID 30316939

• Right ventricular load adaptability metrics in patients undergoing left ventricular assist device implantation. The Journal of thoracic and cardiovascular surgery Amsallem, M., Aymami, M., Hiesinger, W., Zeigler, S., Moneghetti, K., Marques, M., Teuteberg, J., Ha, R., Banerjee, D., Haddad, F. 2018

  Abstract

  OBJECTIVE: Several right load adaptability metrics have been proposed as predictors of right heart failure (RHF) following left ventricular assist device implantation. This study sought to validate and compare the prognostic value of these indices.METHODS: This retrospective study included 194 patients undergoing continuous-flow left ventricular assist device implantation. The primary end point was unplanned right atrial assist device (RVAD) need within 30days after left ventricular assist device implantation; the secondary end points included clinical RHF syndrome without RVAD need and the composite of RHF or RVAD need. Load adaptability indices or interventricular ratios were divided into surrogates of ventriculoarterial coupling (RV area change:end-systolic area), indices reflecting adaptation proportionality (Dandel's index=tricuspid regurgitation velocity-time integral normalized for average RV radius in diastole or systole), and simple ratios (eg, pulse pressure:right atrial pressure or right arterial pressure:pulmonary arterial wedge pressure).RESULTS: Mean age was 55±13years with 77% of men. RHF occurred in 75 patients with 30 patients requiring RVAD implantation. Among right heart metrics, right arterial pressure (normalized odd ratio, 1.62; 95% confidence interval, 1.15-2.38), right arterial pressure:pulmonary arterial wedge pressure (normalized odds ratio, 1.59; 95% confidence interval, 1.08-2.32) and pulse pressure:right arterial pressure<2.0 (normalized odds ratio, 2.56; 95% confidence interval, 1.16-5.56) were associated with RVAD need (all P values<.02). These 3 metrics significantly added incremental prognostic value to the Interagency Registry for Mechanically Assisted Circulatory Support classification score in a similar range, whereas only RAP was incremental to the Michigan score. Correlates of RHF not requiring RVAD included RV end-systolic area index and the Dandel indices, which provided similar incremental value to the Interagency Registry for Mechanically Assisted Circulatory Support, Michigan, and European Registry for Patients with Mechanical Circulatory Support scores.CONCLUSIONS: Although associated with outcome, right load adaptability indices do not appear to provide strong incremental value when compared with simple metrics.

  View details for PubMedID 30482529

• Optimizing right ventricular focused four-chamber views using three-dimensional imaging, a comparative magnetic resonance based study INTERNATIONAL JOURNAL OF CARDIOVASCULAR IMAGING Amsallem, M., Lu, H., Tang, X., Francisco, N., Kobayashi, Y., Moneghetti, K., Shiran, H., Rogers, I., Schnittger, I., Liang, D., Haddad, F. 2018; 34 (9): 1409?17

  View details for DOI 10.1007/s10554-018-1356-7

  View details for Web of Science ID 000441759000009

• Time based versus strain based myocardial performance indices in hypertrophic cardiomyopathy, the merging role of left atrial strain. European heart journal cardiovascular Imaging Kobayashi, Y., Moneghetti, K. J., Bouajila, S., Stolfo, D., Finocchiaro, G., Kuznetsova, T., Liang, D., Schnittger, I., Ashley, E., Wheeler, M., Haddad, F. 2018

  Abstract

  Aims: The myocardial performance index (MPI) is a time-based index of global myocardial performance. In this study, we sought to compare the prognostic value of the MPI with other strain and remodelling indices in hypertrophic cardiomyopathy (HCM).Methods and results: We enrolled 126 patients with HCM and 50 age- and sex-matched controls. Along with traditional echocardiographic assessment, MPI, left ventricular global longitudinal strain (LVGLS), E/e' ratio, and total left atrial (LA) global strain (LAS) were also measured. Time-based MPI was calculated from flow or tissue-based pulse wave Doppler (PWD and TDI) as the (isovolumic-relaxation and contraction time)/systolic-time. We used hierarchical clustering and network analysis to better visualize the relationship between parameters. The primary endpoint was the composite of all-cause death, heart transplantation, left ventricular assist device implantation, and clinical worsening. Left ventricular outflow tract (LVOT) obstruction was present in 56% of patients. Compared with controls, patients with HCM had worse LVGLS (-14.0±3.4% vs. -19.6±1.5%), higher E/e' (12.9±7.2 vs. 6.1±1.5), LA volume index (LAVI) (36.4±13.8ml/m2 vs. 25.6±6.7ml/m2), and MPI (0.55±0.17 vs. 0.40±0.11 for PWD and 0.59±0.22 vs. 0.46±0.09 for TDI) (all P<0.001). During a median follow-up of 55months, 47 endpoints occurred. PWD or TDI-based MPI was not associated with outcome, while LAVI, LAS, LVGLS, and E/e' were (all P<0.01). On multivariable analysis, LVOT obstruction (P<0.001), LAS (P<0.001), and E/e' (P=0.02) were retained as independent associates. They were in different clusters suggesting complemental relationship between them.Conclusion: Time-based index is less predictive of outcome than strain or tissue Doppler indices. LAS may be a promising prognostic marker in HCM.

  View details for PubMedID 30060097

• Applying current normative data to prognosis in heart failure: The Fitness Registry and the Importance of Exercise National Database (FRIEND) INTERNATIONAL JOURNAL OF CARDIOLOGY Moneghetti, K. J., Hock, J., Kaminsky, L., Arena, R., Lui, G. K., Haddad, F., Wheeler, M., Froelicher, V., Ashley, E., Myers, J., Christle, J. W. 2018; 263: 75?79

  Abstract

  Percent of predicted peak VO2 (ppVO2) is considered a standard measure for establishing disease severity, however, there are known limitations to traditional normative values. This study sought to compare ppVO2 from the newly derived "Fitness Registry and the Importance of Exercise: a National Database" (FRIEND) registry equation to conventional prediction equations in a clinical cohort of patients undergoing cardiopulmonary exercise testing (CPX).We selected 1094 patients referred for evaluation of heart failure (HF) symptoms who underwent CPX. ppVO2 was calculated using the FRIEND, Wasserman/Hansen and Jones equations. Participants were followed for a median of 4.5?years [Interquartile range 3.5-6.0] for the composite endpoint of death, advanced HF therapy, or acute decompensated HF requiring hospital admission. Mean age was 48?±?15?years and 62% were female. The FRIEND registry equation predicted the lowest ppVO2 (measured/predicted; 71?±?31%), compared to the Wasserman/Hansen (74?±?29%) and Jones equations (83?±?33%) (p?

  View details for PubMedID 29525067

• Heart Rate Variability: An Old Metric with New Meaning in the Era of using nnHealth Technologies for Health and Exercise Training Guidance. Part One: Physiology and Methods ARRHYTHMIA & ELECTROPHYSIOLOGY REVIEW Singh, N., Moneghetti, K., Christle, J., Hadley, D., Plews, D., Froelicher, V. 2018; 7 (3): 193?98

  View details for DOI 10.15420/aer.2018.27.2

  View details for Web of Science ID 000442561300011

• Optimizing right ventricular focused four-chamber views using three-dimensional imaging, a comparative magnetic resonance based study. The international journal of cardiovascular imaging Amsallem, M., Lu, H., Tang, X., Do Couto Francisco, N. L., Kobayashi, Y., Moneghetti, K., Shiran, H., Rogers, I., Schnittger, I., Liang, D., Haddad, F. 2018

  Abstract

  Obtaining focused right ventricular (RV) apical view remains challenging using conventional two-dimensional (2D) echocardiography. This study main objective was to determine whether measurements from RV focused views derived from three-dimensional (3D) echocardiography (3D-RV-focused) are closely related to measurements from magnetic resonance (CMR). A first cohort of 47 patients underwent 3D echocardiography and CMR imaging within 2h of each other. A second cohort of 25 patients had repeat 3D echocardiography to determine the test-retest characteristics; and evaluate the bias associated with unfocused RV views. Tomographic views were extracted from the 3D dataset: RV focused views were obtained using the maximal RV diameter in the transverse plane, and unfocused views from a smaller transverse diameter enabling visualization of the tricuspid valve opening. Measures derived using the 3D-RV-focused view were strongly associated with CMR measurements. Among functional metrics, the strongest association was between RV fractional area change (RVFAC) and ejection fraction (RVEF) (r=0.92) while tricuspid annular plane systolic excursion moderately correlated with RVEF (r=0.47), all p<0.001. Among RV size measures, the strongest association was found between RV end-systolic area (RVESA) and volume (r=0.87, p<0.001). RV unfocused views led on average to 10% underestimation of RVESA. The 3D-RV-focused method had acceptable test-retest characteristics with a coefficient of variation of 10% for RVESA and 11% for RVFAC. Deriving standardized RV focused views using 3D echocardiography strongly relates to CMR-derived measures and may improve reproducibility in RV 2D measurements.

  View details for PubMedID 29654480

• PREDICTING MORTALITY WITH AORTOMITRAL CALCIFICATIONS IN 317 TAVR PATIENTS Willemink, M., Maret, E., Moneghetti, K., Kim, J., Haddad, F., Kobayashi, Y., Higashigaito, K., Yeung, A., Lee, A., Miller, D., Fischbein, M., Fearon, W., Fleischmann, D. ELSEVIER SCIENCE INC. 2018: 1591

  View details for DOI 10.1016/S0735-1097(18)32132-6

  View details for Web of Science ID 000429659703241

• RIGHT HEART MALADAPTIVE PHENOTYPES AND PREDICTION OF RIGHT HEART FAILURE FOLLOWING CONTINUOUS-FLOW LEFT VENTRICULAR ASSIST DEVICE IMPLANTATION Aymami, M., Haddad, F., Amsallem, M., Wheeler, M., Moneghetti, K., Adams, J., Verhoye, J., Sallam, K., Woo, Y., Ha, R., Banerjee, D. ELSEVIER SCIENCE INC. 2018: 652

  View details for DOI 10.1016/S0735-1097(18)31193-8

  View details for Web of Science ID 000429659701502

• RIGHT VENTRICULAR LOAD ADAPTABILITY IN PATIENTS UNDERGOING CONTINUOUS-FLOW LEFT VENTRICULAR ASSIST DEVICE IMPLANTATION Amsallem, M., Aymami, M., Hiesinger, W., Zeigler, S., Moneghetti, K., Marques, M., Wheeler, M., Teuteberg, J., Ha, R., Banerjee, D., Haddad, F. ELSEVIER SCIENCE INC. 2018: 1624

  View details for DOI 10.1016/S0735-1097(18)32165-X

  View details for Web of Science ID 000429659703274

• INTEGRATING CORRELATION BASED NETWORKS INTO RISK PROGNOSTICATION OF CARDIOMYOPATHY Moneghetti, K., Kim, J., Kobayashi, Y., Boralkar, K., Wheeler, M., Ashley, E., Haddad, F. ELSEVIER SCIENCE INC. 2018: 837

  View details for DOI 10.1016/S0735-1097(18)31378-0

  View details for Web of Science ID 000429659702087

• IMMUNE PROFILE OF HEALTHY CARDIOVASCULAR AGING: INSIGHTS FROM A POPULATION-BASED STUDY AND NETWORK MODELING Bouajila, S., Moneghetti, K., Kobayashi, Y., Gomari, F. A., Abbasi, F., Davis, M. M., Wu, J. C., Kuznetsova, T., Sayed, N., Haddad, F. ELSEVIER SCIENCE INC. 2018: 1657

  View details for Web of Science ID 000429659703307

• THE PROGNOSTIC VALUE OF COMPUTED TOMOGRAPHY FRAILTY MEASURES FOR PROLONGED HOSPITAL STAY AFTER TAVR IN 429 PATIENTS Maret, E., Willemink, M., Moneghetti, K., Kim, J., Haddad, F., Kobayashi, Y., Miller, C., Yeung, A., Fishbein, M., Fearon, W., Fleischmann, D. ELSEVIER SCIENCE INC. 2018: 1414

  View details for DOI 10.1016/S0735-1097(18)31955-7

  View details for Web of Science ID 000429659703064

• THE COMPLEMENTARY VALUE OF THE GET WITH THE GUIDELINES: HEART FAILURE RISK SCORE AND LABORATORY MARKERS AT DISCHARGE IN PREDICTING MORTALITY IN PATIENTS HOSPITALIZED WITH HEART FAILURE WITH PRESERVED EJECTION FRACTION Boralkar, K., Kobayashi, Y., Pargaonkar, V., Moneghetti, K., Tuzovic, M., Krishnan, G., Amsallem, M., Kouznetsova, T., Horne, B., Knowlton, K., Heidenreich, P., Haddad, F. ELSEVIER SCIENCE INC. 2018: 839

  View details for DOI 10.1016/S0735-1097(18)31380-9

  View details for Web of Science ID 000429659702089

• Athletic Remodeling in Female College Athletes, the "Morganroth Hypothesis" Revisited. Clinical journal of sport medicine : official journal of the Canadian Academy of Sport Medicine Kooreman, Z., Giraldeau, G., Finocchiaro, G., Kobayashi, Y., Wheeler, M., Perez, M., Moneghetti, K., Oxborough, D., George, K. P., Myers, J., Ashley, E., Haddad, F. 2018

  Abstract

  There is limited data regarding ventricular remodeling in college female athletes, especially when appropriate scaling of cardiac dimensions to lean body mass (LBM) is considered. Moreover, it is not well established whether cardiac remodeling in female athletes is a balanced process with proportional increase in left ventricular (LV) mass and volume or the right and LV size.During the preparticipation competitive screening, 72 female college athletes volunteered to undergo dual energy x-ray absorptiometry scan for quantification of LBM and comprehensive 2D echocardiography including assessment of longitudinal myocardial strain. The athletes were divided in 2 groups according to the intensity of the dynamic and static components of their sport categories, ie, a higher intensity dynamic and resistive group (n = 37 participating in rowing, water polo and lacrosse) and a lower intensity group (n = 35, participating in short distance running, sailing, synchronized swimming, and softball). In addition, we recruited a group of 31 age-matched nonathlete controls.The mean age of the study population was 18.7 ± 1.0 years. When scaled to body surface area, the higher intensity group had 17.1 ± 3.6% (P < 0.001) greater LV mass when compared with the lower intensity group and 21.7 ± 4.0% (P < 0.001) greater LV mass than the control group. The differences persisted after scaling to LBM with 14.2 ± 3.2% (P < 0.001) greater LV mass in the higher intensity group. By contrast, there was no difference in any of the relative remodeling indices including the LV mass to volume ratio, right to LV area ratio, or left atrial to LV volume ratio (P > 0.50 for all). In addition, no significant difference was noted among the 3 groups in LV ejection fraction (P = 0.22), LV global longitudinal strain (P = 0.55), LV systolic strain rate (P = 0.62), or right ventricular global longitudinal strain (P = 0.61).Female collegiate athletes participating in higher intensity dynamic and resistive sports have higher indexed LV mass even when scaled to LBM. The remodeling process does however appear to be a balanced process not only at the intraventricular level but also at the interventricular and atrioventricular levels.

  View details for PubMedID 29369833

• Exercise testing in heart failure: a contemporary discussion in an era of novel diagnostic techniques and biomarkers. Current opinion in cardiology Moneghetti, K. J., Christle, J. W., Myers, J., Haddad, F. 2018; 33 (2): 217?24

  Abstract

  The purpose of this review is to highlight recent advances in the field of exercise testing for patients with heart failure.The importance of assessment of cardiorespiratory fitness (CRF) and exercise testing in heart failure is highlighted in the consensus recommendation of the American Heart Association. Contemporary studies have validated the independent and incremental strength of CRF metrics in patients with heart failure and coronary artery disease. The use of respiratory gas analysis and imaging or hemodynamics during physical exercise is feasible and results in high prognostic utility across the continuum of heart failure. Understanding how CRF metrics complement existing and novel biomarkers and risk scores is an emerging subject of scientific inquiry.In the current era of personalized medicine, integrating CRF, imaging and circulating biomarkers will allow us to further develop individualized strategies for improving outcome in patients with heart failure.

  View details for PubMedID 29227300

• Challenging the complementarity of different metrics of left atrial function: insight from a cardiomyopathy-based study EUROPEAN HEART JOURNAL-CARDIOVASCULAR IMAGING Kobayashi, Y., Moneghetti, K. J., Boralkar, K., Amsallem, M., Tuzovic, M., Liang, D., Yang, P. C., Narayan, S., Kuznetsova, T., Wu, J. C., Schnittger, I., Haddad, F. 2017; 18 (10): 1153?62

  View details for DOI 10.1093/ehjci/jew121

  View details for Web of Science ID 000412163300014

• Dynamic changes in aortic impedance after transcatheter aortic valve replacement and its impact on exploratory outcome. international journal of cardiovascular imaging Kobayashi, Y., Kim, J. B., Moneghetti, K. J., Kobayashi, Y., Zhang, R., Brenner, D. A., O'Malley, R., Schnittger, I., Fischbein, M., Miller, D. C., Yeung, A. C., Liang, D., Haddad, F., Fearon, W. F. 2017

  Abstract

  Valvulo-arterial impedance (Zva) has been shown to predict worse outcome in medically managed aortic stenosis (AS) patients. We aimed to investigate the association between Zva and left ventricular (LV) adaptation and to explore the predictive value of Zva for cardiac functional recovery and outcome after transcatheter aortic valve replacement (TAVR). We prospectively enrolled 128 patients with AS who underwent TAVR. Zva was calculated as: (systolic blood pressure?+?mean transaortic gradient)/stroke volume index). Echocardiographic assessment occurred at baseline, 1-month and 1-year after TAVR. The primary endpoints were to investigate associations between Zva and global longitudinal strain (GLS) at baseline as well as GLS change after TAVR. The secondary was to compare all-cause mortality after TAVR between patients with pre-defined Zva (=5 mmHg m(2)/ml), stroke volume index (=35 ml/m(2)), and GLS (=-15%) cutoffs. The mean GLS was reduced (-13.0?±?3.2%). The mean Zva was 5.2?±?1.6 mmHg*m(2)/ml with 55% of values ?5.0 mmHg*m(2)/ml, considered to be abnormally high. Higher Zva correlated with worse GLS (r?=?-0.33, p?

  View details for DOI 10.1007/s10554-017-1155-6

  View details for PubMedID 28516313

• THE INFLAMMASOME PATHWAY IS ASSOCIATED WITH ADVERSE VENTRICULAR REMODELING FOLLOWING TRANSCATHETER AORTIC VALVE REPLACEMENT Kim, J., Kobayashi, Y., Kouznetsova, T., Moneghetti, K., Brenner, D., O'Malley, R., Dao, C., Schnittger, I., Liang, D., Wu, J., Fischbein, M., Lee, A., Miller, D., Yeung, A., Fearon, W., Haddad, F. ELSEVIER SCIENCE INC. 2017: 1040

  View details for Web of Science ID 000397342301562

• INTEGRATING MYOCARDIAL STRAIN AND EXERCISE PERFORMANCE INTO PROGNOSTICATION OF HYPERTROPHIC CARDIOMYOPATHY Moneghetti, K., Stolfo, D., Christle, J., Kobayashi, Y., Finocchiaro, G., Sinagra, G., Myers, J., Ashley, E., Haddad, F., Wheeler, M. ELSEVIER SCIENCE INC. 2017: 833

  View details for Web of Science ID 000397342301355

• ADDRESSING REFERENCE ECHOCARDIOGRAPHIC PARAMETERS IN ATHLETIC SCREENING: A COLLEGE FOOTBALL-BASED STUDY FOCUSING ON THE IMPLICATIONS OF RACE AND CORRECTION FOR BODY COMPOSITION Moneghetti, K., Singh, T., Kooreman, Z., Christle, J., Froelicher, V., Wheeler, M., Ashley, E., Haddad, F. ELSEVIER SCIENCE INC. 2017: 1453

  View details for Web of Science ID 000397342302175

• IDENTIFYING THE OPTIMAL ECHOCARDIOGRAPHIC VARIABLES TO PREDICT OUTCOME THROUGH CORRELATION MAPPING IN PATIENTS WITH DILATED CARDIOMYOPATHY Moneghetti, K., Kim, J., Giraldeau, G., Kobayashi, Y., Boralkar, K., Schnittger, I., Ashley, E., Wheeler, M., Haddad, F. ELSEVIER SCIENCE INC. 2017: 1535

  View details for Web of Science ID 000397342302257

• Incremental Value of Deformation Imaging and Hemodynamics Following Heart Transplantation: Insights From Graft Function Profiling. JACC. Heart failure Kobayashi, Y., Sudini, N. L., Rhee, J. W., Aymami, M., Moneghetti, K. J., Bouajila, S., Kobayashi, Y., Kim, J. B., Schnittger, I., Teuteberg, J. J., Khush, K. K., Fearon, W. F., Haddad, F. 2017; 5 (12): 930?39

  Abstract

  This study investigated to define graft dysfunction and to determine its incremental association with long-term outcome after heart transplantation (HT).Although graft failure is an established cause of late mortality after HT, few studies have analyzed the prognostic value of graft dysfunction at 1- and 5-year follow-up of HT.Patients who underwent HT and completed their first annual evaluation with right heart catheterization and echocardiography at Stanford University between January 1999 and December 2011 were included in the study. Hierarchical clustering was used to identify modules to capture independent features of graft dysfunction at 1 year. The primary endpoint for analysis consisted of the composite of cardiovascular mortality, re-transplantation, or heart failure hospitalization within 5 years of HT. The study further explored whether changes in graft dysfunction between 1 and 5 years were associated with 10-year all-cause mortality.A total of 215 HT recipients were included in the study. Using hierarchical clustering, 3 functional modules were identified; among them, left ventricular global longitudinal strain (LVGLS), stroke volume index, and right atrial pressure (RAP) or pulmonary capillary wedge pressure (PCWP) captured key features of graft function. Graft dysfunction based on pre defined LVGLS in absolute value <14%, stroke volume index <35 ml/m2, RAP >10 mm Hg, or PCWP >15 mm Hg were present in 41%, 36%, and 27%, respectively. The primary endpoint at 5 years occurred in 52 patients (24%), whereas 10-year all-cause mortality occurred in 30 (27%) of 110 patients alive at 5 years. On multivariate analysis, RAP (standardized hazard ratio: 1.63), LVGLS (standardized hazard ratio: 1.39), and a history of hemodynamically compromising rejection within 1 year (hazard ratio: 2.18) were independent predictors of 5-year outcome. RAP at 5 years, as well as change in RAP from 1 to 5 years, was predictive of 10-year all-cause mortality.RAP and LVGLS at the first annual evaluation provide complementary prognostic information in predicting 5-year outcome after HT.

  View details for PubMedID 29191301

• Normative Values for Cardiorespiratory Fitness: 45 Years after Bruce Journal of Clinical Exercise Physiology Christle, J. W., Moneghetti , K. J., Myers, J. 2017; 3 (6): 59-60
• Value of Strain Imaging and Maximal Oxygen Consumption in Patients With Hypertrophic Cardiomyopathy. The American journal of cardiology Moneghetti, K. J., Stolfo, D., Christle, J. W., Kobayashi, Y., Finocchiaro, G., Sinagra, G., Myers, J., Ashley, E. A., Haddad, F., Wheeler, M. T. 2017; 120 (7): 1203?8

  Abstract

  Longitudinal strain (LS) has been shown to be predictive of outcome in hypertrophic cardiomyopathy (HC). Percent predicted peak oxygen uptake (ppVO2), among other cardiopulmonary exercise testing (CPX) metrics, is a strong predictor of prognosis in HC. However, there has been limited investigation into the combination of LS and CPX metrics. This study sought to determine how LS and parameters of exercise performance contribute to prognosis in HC. One hundred and thirty-one consecutive patients with HC who underwent CPX and stress echocardiography were included. Global, septal, and lateral LS were assessed at rest and stress. Eighty matched individuals were used as controls. Patients were followed for the composite end point of death and worsening heart failure. All absolute LS components were lower in patients with HC than in controls (global 14.3?±?4.0% vs 18.8?±?2.2%, p <0.001; septal 11.9?±?4.9% vs 17.9?±?2.7%, p <0.001; lateral 16.0?±?4.7% vs 19.4?±?3.1%, p?=?0.001). Global strain reserve was also reduced in patients with HC (13?±?5% vs 19?±?8%, p?=?0.002). Over a median follow-up of 56 months (interquartile range 14 to 69), the composite end point occurred in 53 patients. Global LS was predictive of outcome on univariate analysis (0.55 [0.41 to 0.74], p <0.001). When combined with CPX metrics, lateral LS was the only strain variable predictive of outcome along with indexed left atrial volume (LAVI) and ppVO2. The worst outcomes were observed for patients with lateral LS <16.1%, LAVI >52?ml/m2, and ppVO2 <80%. The combination of lateral LS, LAVI, and ppVO2 presents a simple model for outcome prediction.

  View details for PubMedID 28802509

• GDF-15 (Growth Differentiation Factor 15) Is Associated With Lack of Ventricular Recovery and Mortality After Transcatheter Aortic Valve Replacement. Circulation. Cardiovascular interventions Kim, J. B., Kobayashi, Y., Moneghetti, K. J., Brenner, D. A., O'Malley, R., Schnittger, I., Wu, J. C., Murtagh, G., Beshiri, A., Fischbein, M., Miller, D. C., Liang, D., Yeung, A. C., Haddad, F., Fearon, W. F. 2017; 10 (12)

  Abstract

  Recent data suggest that circulating biomarkers may predict outcome in patients undergoing transcatheter aortic valve replacement (TAVR). We examined the association between inflammatory, myocardial, and renal biomarkers and their role in ventricular recovery and outcome after TAVR.A total of 112 subjects undergoing TAVR were included in the prospective registry. Plasma levels of B-type natriuretic peptide, hs-TnI (high-sensitivity troponin I), CRP (C-reactive protein), GDF-15 (growth differentiation factor 15), GAL-3 (galectin-3), and Cys-C (cystatin-C) were assessed before TAVR and in 100 sex-matched healthy controls. Among echocardiographic parameters, we measured global longitudinal strain, indexed left ventricular mass, and indexed left atrial volume. The TAVR group included 59% male, with an average age of 84 years, and 1-year mortality of 18%. Among biomarkers, we found GDF-15 and CRP to be strongly associated with all-cause mortality (P<0.001). Inclusion of GDF-15 and CRP to the Society of Thoracic Surgeons score significantly improved C index (0.65-0.79; P<0.05) and provided a category-free net reclassification improvement of 106% at 2 years (P=0.01). Among survivors, functional recovery in global longitudinal strain (>15% improvement) and indexed left ventricular mass (>20% decrease) at 1 year occurred in 48% and 22%, respectively. On multivariate logistic regression, lower baseline GDF-15 was associated with improved global longitudinal strain at 1 year (hazard ratio=0.29; P<0.001). Furthermore, improvement in global longitudinal strain at 1 month correlated with lower overall mortality (hazard ratio=0.45; P=0.03).Elevated GDF-15 correlates with lack of reverse remodeling and increased mortality after TAVR and improves risk prediction of mortality when added to the Society of Thoracic Surgeons score.

  View details for PubMedID 29222133

• Moving Beyond Linear Formulas for Left Ventricular Mass in Aortic Valve Replacement Structural Heart Moneghetti , K. J., Bouajila, S., Kobayashi, Y., Kim, J., Fearon, W., Haddad, F. 2017

  View details for DOI 10.1080/24748706.2017.1377364

• Incremental value of right heart metrics and exercise performance to well-validated risk scores in dilated cardiomyopathy European Heart Journal - Cardiovascular Imaging Moneghetti , K. J., Giraldeau, G., Wheeler, M. T., Kobayashi , Y., Vrtovec, B., Boulate, D., Kuznetsova, T., Schnittger, I., Wu, J. C., Myers, J., Ashely, E., Haddad , F. 2017

  View details for DOI 10.1093/ehjci/jex187

• The Use of Peak Oxygen Uptake Prediction Equations for Prognosis in Patients with Cardiomyopathy American College of Sports Medicine Moneghetti , K. J., Christle , J. W., Lima, R., Kaminsky, L., MYesr, J. 2017: 598

  View details for DOI 10.1249/01.mss.0000518565.03148.13

• Applying Cardiopulmonary Exercise Testing to the Evaluation of Left Ventricular Function for Patients Ventricular Assist Device Therapy American College of Sports Medicine Christle, J. W., Moneghetti , K. J., Haddad, F., Banerjee, D., Myers, J., 2017: 533

  View details for DOI 10.1249/01.mss.0000518376.31161.d1

• Contractile reserve and cardiopulmonary exercise parameters in patients with dilated cardiomyopathy, the two dimensions of exercise testing. Echocardiography (Mount Kisco, N.Y.) Moneghetti, K. J., Kobayashi, Y., Christle, J. W., Ariyama, M., Vrtovec, B., Kouznetsova, T., Wilson, A., Ashley, E., Wheeler, M. T., Myers, J., Haddad, F. 2017

  Abstract

  Left ventricular (LV) contractile reserve assessed using imaging and cardiopulmonary exercise testing (CPX) has been shown to predict outcome in patients with dilated cardiomyopathy (DCM). Few clinical studies have, however, analyzed the relationship between them.A cohort of 75 ambulatory patients with DCM underwent stress treadmill echocardiography with CPX. LV contractile reserve was calculated as absolute change (?LVEF=LVEFpeak -LVEFrest ) and percent change (%LVEF=[(LVEFpeak -LVEFrest )/LVEFpeak) ]×100) in LVEF, circumferential and longitudinal strain (LS). Exercise capacity was measured as peak oxygen uptake (peak VO2 ) and ventilatory efficiency as the slope of minute ventilation to CO2 production (VE/VCO2 slope). Values of contractile reserve were compared to matched controls. We also explored which metric of ventricular response (absolute or percent change) was less dependent on baseline LV function.Patients with DCM had a mean age, rest and peak LVEF of 44±10 years, 42±10% and 50±12%, respectively. Among parameters of contractile reserve, peak cardiac output was the strongest parameter associated with peak VO2 (r=.63, P<.001). Along with age, sex, and BMI, it explained more than 70% of the variance in peak VO2 . In contrast, LVEF and LS were only weakly related to peak VO2 . With regard to ventilatory efficiency, the strongest parameter that emerged was right atrial volume index (r=.36, P<.001). Percent change in LVEF was more independent of baseline function than absolute change.Echocardiographic contractile reserve and CPX provide complementary information. Percent change in contractile reserve was most independent of baseline function, therefore may be preferred when analyzing the ventricular response to exercise.

  View details for PubMedID 28681553

• Combining echocardiography with cardiopulmonary exercise stress testing to evaluate recovery of systolic function in patients with left ventricular assist devices Heart Failure 2017 and the 4th World Congress on Acute Heart Failure Christle , J., Moneghetti , K. J., Banerjee, D., Haddad, F., Wheeler 2017: 112

  View details for DOI 10.1002/ejhf.833

• Addressing Reference Echocardiographic Parameters in Athletic Screening: A College Football-Based Study focusing on the implications of race and correction for body composition Moneghetti , K., Singh, T., Kooreman, Z., Christle , J., Froelicher , V., Matthew , Ashley , E., Haddad, F. 2017 : 1453

  View details for DOI 10.1016/S0735-1097(17)34842-8

• The Inflammasome Pathway is Associated with Adverse Ventricular Remodeling Following Transcatheter Aortic Value Replacement American College of Cardiology Scientific Sessions Kim, J., Kobayashi, Y., Kouznestsova, T., Moneghetti , K., Brenner, D., O'Malley, R., Dao, C., Liang, D., Fischbein, M., Lee, A., Miller, C., Yeung, A., William , Francois 2017: 1040

  View details for DOI 10.1016/S0735-1097(17)34429-7

• Integrating Myocardial Strain and Exercise Performance into Prognostication of Hypertrophic Cardiomyopathy American College of Cardiology Scientific Sessions Moneghetti , K. J., Stolfo, D., Kobayashi, Y., Finocchiaro, G., Myers, J., Ashley, E., Haddad, F., Wheeler , M. 2017: 833

  View details for DOI 10.1016/S0735-1097(17)34222-5

• Identifying the Optimal Echocardiographic Variables to Predict Outcome Through Correlation Mapping in Patients with Dilated Cardiomyopathy Moneghetti , K. J., Kim, J., Giraldeau, G., Kobayashi, Y., Boralkar, K., Ashley, E., Wheeler, M., Haddad, F. 2017: 69

  View details for DOI 10.1016/S0735-1097(17)34924-0

• Baseline growth differentiation factor 15 (GDF15) is an independent predictor of reverse left atrial remodeling and mortality at 1-year following Transcatheter Aortic Valve Replacement Kim, J., Kobayashi, Y., Brenner, D., Moneghetti, K., O'Malley, R., Dao, C., Vu, T., Schnittger, I., Liang, D., Wu, J., Fischbein, M., Lee, A., Miller, D., Yeung, A., Haddad, F., Fearon, W. ELSEVIER SCIENCE INC. 2016: B298

  View details for DOI 10.1016/j.jacc.2016.09.150

  View details for Web of Science ID 000398590400257

• Challenging the complementarity of different metrics of left atrial function: insight from a cardiomyopathy-based study. European heart journal cardiovascular Imaging Kobayashi, Y., Moneghetti, K. J., Boralkar, K., Amsallem, M., Tuzovic, M., Liang, D., Yang, P. C., Narayan, S., Kuznetsova, T., Wu, J. C., Schnittger, I., Haddad, F. 2016

  Abstract

  Left ventricular (LV) strain provides incremental values to LV ejection fraction (LVEF) in predicting outcome. We sought to investigate if similar relationship is observed between left atrial (LA) emptying fraction and LA strain.In this study, we selected 50 healthy subjects, 50 patients with dilated, 50 hypertrophic, and 50 infiltrative (light-chain (AL) amyloidosis) cardiomyopathy (CMP). Echocardiographic measures included LVEF and LA emptying fraction as well as LV and LA longitudinal strain (LVLS and LALS). After regression analysis, comparison of least square means of LA strain among aetiologies was performed. Intraclass correlation coefficient (ICC) and coefficient of variation (COV) were used in the assessment of variability and reproducibility of LV and LA metrics. The mean LVLS and all LA metrics were impaired in patients with all CMP compared with healthy subjects. In contrast to the moderate relationship between LVEF and LVLS (r = -0.51, P < 0.001), there was a strong linear relationship between LA emptying fraction and LA strain (r = 0.87, P < 0.001). In multiple regression analysis, total LA strain was associated with LVLS (? = -0.48, P < 0.001), lateral E/e' (? = -0.24, P < 0.001), age (? = -0.21, P < 0.001), and heart rate (? = -0.14, P = 0.02). The least square mean of LA strain adjusted for the parameters was not different among aetiologies (ANOVA P = 0.82). The ICC (>0.77) and COV (<13) were acceptable.In contrast to LV measures, there is a strong linear relationship between volumetric and longitudinal deformation indices of left atrium irrespective of CMP aetiology. Either LA emptying fraction or LA strain could be used as an important parameter in predictive models.

  View details for PubMedID 27638850

• Complementary Role of Exercise Performance and Right Heart Metrics to the Validated MAGGIC score: Insights From a Network Analysis American Heart Association Scientific Sessions and Resuscitation Science Symposium Moneghetti , K. J., Giraldeau, G., Kobayashi, Y., Ariyama, M., Boulate, D., Kouznestsova, T., Schnittger, I., Wheeler, M., Wu, J. C., Ashley, E., Myers, J., Haddad, F. 2016
• Baseline growth differentiation factor 15 (GDF15) is an independent predictor of reverse left atrial remodeling and mortality at 1-year following Transcatheter Aortic Valve Replacement Twenty-Eighth Annual Symposium Transcatheter Cardiovascular Therapeutics Kim, J., Kobayashi, Y., Brenner, D., Moneghetti, K., O'Malley, R., Dao, C., Vu, T., Schnittger, I., Liang, D., Wu , J., Fischbein, M., Lee, A., Yeung, A., Haddad, F., Fearon, W. 2016
• Left Ventricular Response to Exercise in Dilated Cardiomyopathy and the Potential for Reclassification of Heart Failure Severity American Society of Echocardiography Scientific Sessions Moneghetti , K. J., Kobayashi, Y., Ariyama, M., Wheeler, M., Schnitter, I., Myers, J., Ashley, E., Haddad, F. 2016
• Clinical Predictors of Short and Long Term Mortality in Patients With Heart Failure Preserved Ejection Fraction American Heart Association Scientific Sessions and Resuscitation Science Symposium Boralkar, K. A., Kobayashi, Y., Tuzovic, M., Moneghetti , K. J., Pargaonkar, V. S., Vrtovec, B., Wheeler, M., Banerjee, D., Heidenreich, P., Haddad, F. 2016
• Asystole Following Complex Partial Seizures HEART LUNG AND CIRCULATION Stokes, M. B., Palmer, S., Moneghetti, K. J., Mariani, J. A., Wilson, A. M. 2013; 22 (2): 146-148

  Abstract

  A case is presented of a patient with a long history of epilepsy who presents with recurrent seizures and develops a period of asystole. The case highlights the need to consider the potential arrhythmic complications of seizures and the clinical characteristics that may be present in those with epilepsy that may warrant evaluation for arrhythmias.

  View details for DOI 10.1016/j.hlc.2012.06.004

  View details for Web of Science ID 000315370600011

  View details for PubMedID 22877730

• An Update in Lung Transplantation Minerva Pneumologica Moneghetti , K. J., Westall, G. P., Snell , G. I. 2010; 1 (49)