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Background:During optimization of the atrioventricular (AV) delay of cardiac resynchronization therapy (CRT), it is not known exactly which windows of time around the transition are most informative for identification of the optimum.Method and Results:In 22 patients with CRT, we performed AV delay optimization using continuous noninvasive hemodynamics. We used signal‐to‐noise ratio to determine the most efficient averaging window location and width....
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