SYSTEM FOR ADAPTIVE CARDIAC RESYNCHRONIZATION THERAPY BASED ON AN INDICATION OF INTRINSIC ATRIOVENTRICULAR CONDUCTION

摘要

Cardiac resynchronization therapy (CRT) delivered to a heart of a patient may be adjusted based on detection (112) of a surrogate indication of the intrinsic atrioventricular conduction of the heart. In some examples, the surrogate indication is determined to be a sense event of the first depolarizing ventricle of the heart within a predetermined period of time following the delivery of a fusion pacing stimulus to the later depolarizing ventricle. In some examples, the CRT is switched (114) from a fusion pacing configuration to a biventricular pacing configuration if the surrogate indication is not detected, and the CRT is maintained (110) in a fusion pacing configuration if the surrogate indication is detected.