Method and apparatus for providing extra systolic stimulation
First Claim
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1. A method of cardiac stimulation using a device comprising a means for delivering atrial stimulation pulses and a means for determining timing of ventricular depolarizations, comprising:
- measuring a conduction time between a delivered atrial stimulation pulse and a resultant following ventricular depolarization;
determining a desired coupling interval between ventricular depolarizations and following ventricular extrasystolic depolarizations; and
subsequently delivering an atrial pacing pulse following given ventricular depolarizations at intervals following the given ventricular depolarizations equal to the desired coupling interval minus the measured conduction time.
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Abstract
An implantable medical device and associated method control the delivery of extra systolic stimulation by determining a coupling interval, setting an extra systolic interval in response to the coupling interval; and delivering a supraventricular stimulation pulse upon expiration of the extra systolic interval. The supraventricular stimulation pulse evokes a depolarization that is conducted to the ventricles occurring at a ventricular coupling interval relative to a ventricular event.
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5 Claims
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1. A method of cardiac stimulation using a device comprising a means for delivering atrial stimulation pulses and a means for determining timing of ventricular depolarizations, comprising:
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measuring a conduction time between a delivered atrial stimulation pulse and a resultant following ventricular depolarization; determining a desired coupling interval between ventricular depolarizations and following ventricular extrasystolic depolarizations; and subsequently delivering an atrial pacing pulse following given ventricular depolarizations at intervals following the given ventricular depolarizations equal to the desired coupling interval minus the measured conduction time. - View Dependent Claims (2, 3, 4, 5)
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Specification