Ten DDD paced patients, suffering front dilated cardiomyopathy in the NYHA functional classes III or IV were studied by means of Doppler ecbocardiography at different programmed values of atrioventricular (AV) delay (200, 150, 120, 100, and 80 msec). The following variables were evaluated: LV ...
Such a window may commence upon detection of an atrial event (e.g., a paced event and/or an intrinsic event). Such an exemplary method optionally includes detecting a ventricular contraction (R wave) and initiating a ventricular to atrial interval wherein upon expiration of the interval, ...
Every 256 beats, the algorithm automatically extends the paced and sensed AV delay (AVD) for three beats, during which it measures the intrinsic AVI and adapts the paced AVD again. Therefore, SyncAV® enables continuous dynamic AVI programming to optimize paced AVD during exercise or changes ...