Heart rhythm : the official journal of the Heart Rhythm Society
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Randomized Controlled Trial Clinical Trial
Randomized prospective trial of atrioventricular delay programming for cardiac resynchronization therapy.
The purpose of this study was to determine if AV delay optimization with continuous-wave Doppler aortic velocity-time integral (VTI) is clinically superior to an empiric program in patients treated with cardiac resynchronization therapy (CRT) for severe heart failure. ⋯ Echocardiography-guided AV delay optimization using the aortic Doppler VTI improves clinical outcomes at 3 months compared to an empiric AV delay program of 120 ms.