CARDIAC PACING USING ADJUSTABLE ATRIO-VENTRICULAR DELAYS
First Claim
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1. A method, comprising:
- delivering a ventricular pacing pulse with an optimal atrio-ventricular delay time interval (AVDc) which is approximately optimized to provide a maximum increase in left ventricular pressure (LV+dp/dt) using a time interval PY between an atrial electrical event P and a ventricular mechanical event Y.
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Abstract
A pacing system for providing optimal hemodynamic cardiac function for parameters such as contractility (peak left ventricle pressure change during systole or LV+dp/dt), or stroke volume (aortic pulse pressure) using system for calculating atrio-ventricular delays for optimal timing of a ventricular pacing pulse. The system providing an option for near optimal pacing of multiple hemodynamic parameters. The system deriving the proper timing using electrical or mechanical events having a predictable relationship with an optimal ventricular pacing timing signal.
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Citations
20 Claims
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1. A method, comprising:
delivering a ventricular pacing pulse with an optimal atrio-ventricular delay time interval (AVDc) which is approximately optimized to provide a maximum increase in left ventricular pressure (LV+dp/dt) using a time interval PY between an atrial electrical event P and a ventricular mechanical event Y. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An apparatus, comprising:
a programmable pulse generator having a mechanical event sensor adapted to monitor a signal representing ventricular mechanical activity and an electrical event sensor, wherein the programmable pulse generator is adapted calculate a time interval PY between an atrial electrical event P and a ventricular mechanical event Y and delivers a ventricular pacing pulse with an optimal atrio-ventricular delay time interval (AVDc) which is approximately optimized to provide a maximum increase in left ventricular pressure (LV+dp/dt) using the time interval PY. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
Specification