Abstract
Cardiac Apex Rotation (CAR) has been shown to provide a sensitive index of both systolic and diastolic Left Ventricle (LV) dynamics. As an alternative to sophisticated techniques (i.e. radiopacque markers and tagged magnetic resonance) not suitable for a chronic monitoring of LV dynamics we recently proposed the use of an implanted gyroscopic sensor (Gyro) based on Coriolis force to quantify CAR. The purpose of this study was to evaluate in a sheep model the effects of asynchronous contraction and relaxation resulting from ventricular pacing on the rotational mechanics of LV over the full cycle.
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