Cardiac pacing using adjustable atrio-ventricular delays
First Claim
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1. A method, comprising:
- sensing a first cardiac event from a cardiac cycle;
determining a second cardiac event from the cardiac cycle that has an approximately constant timing relationship with respect to the first cardiac event;
determining a first time interval between the first cardiac event and the second cardiac event; and
delivering a pacing pulse for enhancing systolic performance using a delay time interval referenced to the first cardiac event and calculated from the first time interval between the first cardiac event and the second cardiac event by using a predetermined mathematical relationship.
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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
28 Claims
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1. A method, comprising:
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sensing a first cardiac event from a cardiac cycle;
determining a second cardiac event from the cardiac cycle that has an approximately constant timing relationship with respect to the first cardiac event;
determining a first time interval between the first cardiac event and the second cardiac event; and
delivering a pacing pulse for enhancing systolic performance using a delay time interval referenced to the first cardiac event and calculated from the first time interval between the first cardiac event and the second cardiac event by using a predetermined mathematical relationship. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification