Method and apparatus to deliver mechanically fused pacing therapy

摘要

A medical device system and method for delivering mechanically fused left ventricular cardiac stimulation. A sensor monitors left ventricular acceleration while left ventricular cardiac stimulation is provided at an AV interval. The left ventricular acceleration is used to calculate a mechanical response interval and the mechanical response interval is compared to a desired mechanical response interval. The AV interval is adjusted until the mechanical response interval is equal to the desired mechanical response interval.

主权项

1. A medical device system for delivering mechanically fused left ventricular cardiac stimulation, said system comprising:
an implantable medical device (IMD); a plurality of electrical medical leads coupled to the IMD and adapted to deliver left ventricular stimulation to a patient upon expiration of an AV interval; and at least one sensor capable of monitoring left ventricular motion and providing a left ventricular motion signal to the IMD, the IMD configured to determine a mechanical response interval measured from delivery of the left heart ventricular stimulation based on the left ventricular motion signal, the IMD configured to adjust the AV interval after determining that the mechanical response interval differs from a predetermined desired mechanical response interval in order to deliver mechanically-fused left ventricular cardiac stimulation.