Bio

Clinical Focus


  • Anesthesia
  • Obstetric Anesthesia
  • High Risk Pregnancy
  • Postpartum Hemorrhage
  • Post-Dural Puncture Headache
  • Congenital Heart Defects

Academic Appointments


Professional Education


  • Board Certification: American Board of Anesthesiology, Anesthesia (2019)
  • Internship: Stanford University Internal Medicine Residency (2013) CA
  • Fellowship: Stanford University Anesthesiology Fellowships (2018) CA
  • Residency: Stanford University Anesthesiology Residency (2016) CA
  • Medical Education: University of California at San Francisco School of Medicine (2012) CA

Publications

All Publications


  • Transesophageal Echocardiographic Observation of Caval Thrombus Followed by Intraoperative Placement of Inferior Vena Cava Filter for Presumed Pulmonary Embolism During Cesarean Hysterectomy for Placenta Percreta: A Case Report A & A PRACTICE Nanji, J. A., Ansari, J. R., Yurashevich, M., Ismawan, J. M., Lyell, D. J., Karam, A. K., Hovsepian, D. M., Riley, E. T. 2019; 12 (2): 37–40
  • Transesophageal Echocardiographic Observation of Caval Thrombus Followed by Intraoperative Placement of Inferior Vena Cava Filter for Presumed Pulmonary Embolism During Cesarean Hysterectomy for Placenta Percreta: A Case Report. A&A practice Nanji, J. A., Ansari, J. R., Yurashevich, M., Ismawan, J. M., Lyell, D. J., Karam, A. K., Hovsepian, D. M., Riley, E. T. 2018

    Abstract

    During a cesarean hysterectomy for placenta percreta, transesophageal echocardiography was used to monitor volume status and guide resuscitation. After delivery of the neonate but before massive surgical hemorrhage, a thrombus appeared in the inferior vena cava. Roughly 3 hours later, the patient had hemodynamic changes consistent with an intraoperative pulmonary embolism. Boluses of epinephrine stabilized the patient. An inferior vena cava filter was placed via an in situ internal jugular central venous cannula to prevent further embolic events. We believe transesophageal echocardiography is a useful monitor during surgery for placenta percreta.

    View details for PubMedID 30020106

  • Pharmacokinetics and Pharmacodynamics of Drugs Commonly Used in Pregnancy and Parturition. Anesthesia and analgesia Ansari, J., Carvalho, B., Shafer, S. L., Flood, P. 2016; 122 (3): 786-804

    Abstract

    The majority of pregnant women will be treated with a medication other than a vitamin supplement during their pregnancy. Almost half of these medications will be category C or D according to the former US Food and Drug Administration classification system, indicating a lack of human studies with animal studies suggesting adverse fetal effects (category C) or evidence of risk in humans (category D). Changes in maternal physiology alter drug bioavailability, distribution, clearance, and thus the drug half-life in often unpredictable ways. For many drugs, good pharmacokinetic and pharmacodynamic data in pregnancy and parturition are lacking. For other drugs, recent studies demonstrate major pharmacokinetic or pharmacodynamic changes that require dose adjustment in pregnancy, but current dosing guidelines do not reflect these data. In this review, we address the principles that underlie changes in pharmacology and physiology in pregnancy and provide information on drugs that anesthesiologists commonly encounter in treating pregnant patients.

    View details for DOI 10.1213/ANE.0000000000001143

    View details for PubMedID 26891392

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