Echocardiography versus intracardiac electrocardiography-based optimization for cardiac resynchronization therapy A comparative clinical long-term trial

摘要

Background Optimization of AV and VV delay programming has been shown to be essential for the success of cardiac resynchronization therapy (CRT). Acute hemodynamic improvement can be obtained by intracardiac electrocardiogram (IEGM)-based optimization. The aim of the present study was to evaluate whether this IEGM-based algorithm is comparable to the current gold standard of echocardiography.