Circulation. Arrhythmia and electrophysiology
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Circ Arrhythm Electrophysiol · Jun 2013
Randomized Controlled Trial Comparative StudyA randomized study of cardiac resynchronization therapy defibrillator versus dual-chamber implantable cardioverter-defibrillator in ischemic cardiomyopathy with narrow QRS: the NARROW-CRT study.
Current recommendations require a QRS duration of ≥120 ms as a condition for prescribing cardiac resynchronization therapy (CRT). This study was designed to test the hypothesis that patients with heart failure (HF) of ischemic origin, current indications for defibrillator implantation, and QRS <120 ms may benefit from CRT in the presence of marked mechanical dyssynchrony. ⋯ URL: http://clinicaltrials.gov. Unique identifier: NCT01577446.