System and Method for Improving Ventricular Sensing
First Claim
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1. A method comprising:
- operating an implantable medical device (IMD) according to a ventricular pacing protocol (VPP) wherein a sensed ventricular event in a first cardiac cycle precludes cardiac pacing in a second cardiac cycle immediately subsequent to the first cardiac cycle;
initiating a first post atrial ventricular blanking (PAVB) interval following an atrial pacing pulse under a first condition; and
initiating a second PAVB following the atrial pacing pulse under a second condition, wherein the first PAVB is shorter in duration than the second PAVB.
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Abstract
An implantable medical device operates according to a ventricular pacing protocol (VPP) that precludes ventricular pacing in any cardiac cycle where a sensed ventricular event has occurred in the preceding cycle. Improved ventricular sensing, detection and classification is provided.
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Citations
27 Claims
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1. A method comprising:
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operating an implantable medical device (IMD) according to a ventricular pacing protocol (VPP) wherein a sensed ventricular event in a first cardiac cycle precludes cardiac pacing in a second cardiac cycle immediately subsequent to the first cardiac cycle; initiating a first post atrial ventricular blanking (PAVB) interval following an atrial pacing pulse under a first condition; and initiating a second PAVB following the atrial pacing pulse under a second condition, wherein the first PAVB is shorter in duration than the second PAVB. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An implantable medical device (IMD) comprising:
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a processor; a pulse generator in communication with the processor for selectively providing cardiac pacing stimuli; a lead system operably coupled to the pulse generator and the processor to deliver the cardiac pacing stimuli and to sense electrical signals representative of cardiac data; a ventricular pacing protocol (VPP) module operably coupled to the processor and configured to receive data indicative of a sensed ventricular event in a first cardiac cycle and to preclude cardiac pacing in a second cardiac cycle immediately subsequent to the first cardiac cycle; a pacing control module coupled with the processor and configured to initiate a first post atrial ventricular blanking period (PAVB) following an atrial pacing pulse if a first condition is met and initiate a second PAVB, longer in duration than the first PAVB, if a second condition is met. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. An implantable medical device (IMD) comprising:
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means for operating the IMD according to a ventricular pacing protocol (VPP) wherein a sensed ventricular event in a first cardiac cycle precludes cardiac pacing in a second cardiac cycle immediately subsequent to the first cardiac cycle; means for initiating a first post atrial ventricular blanking (PAVB) interval following an atrial pacing pulse under a first condition; and means for initiating a second PAVB following the atrial pacing pulse under a second condition, wherein the first PAVB is shorter in duration than the second PAVB. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27)
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Specification