John Ioannidis
Publication Details
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Effect of left ventricular ejection fraction and QRS duration on the survival benefit of implantable cardioverter-defibrillators: meta-analysis of primary prevention trials.
Heart Rhythm. 2013; (2): 200-6
Implantable cardioverter-defibrillators (ICDs) are recommended for the primary prevention of sudden cardiac death in patients with left ventricular dysfunction, but it is unclear whether treatment benefits are diminished in patients with very low baseline left ventricular ejection fraction (LVEF) (<25%) or increased in those with prolonged QRS duration (>120 ms).
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