Fully inhibited dual chamber pacing mode
First Claim
1. A method of selectively providing cardiac pacing with an implantable medical device comprising:
- detecting, via an electrode, ventricular activity during a given cardiac cycle;
setting, via a processor, a flag during the given cardiac cycle when ventricular activity is detected during the given cardiac cycle;
determining the flag is set at an onset of a current cardiac cycle, the current cardiac cycle occurring after the given cardiac cycle;
precluding a ventricular pacing pulse during an entirety of the current cardiac cycle when the flag is set at the onset of the current cardiac cycle; and
wherein the given and the current cardiac cycles are each initiated by an atrial event and extend only until a next subsequent atrial event.
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Accused Products
Abstract
A pacing mode is provided, in one embodiment, that permits missed or skipped ventricular beats. The mode monitors a full cardiac cycle (A-A interval) for the presence of intrinsic ventricular activity. If ventricular activity is present, a flag is set that is valid for the next cardiac cycle. At the beginning of the next cardiac cycle, the device determines if the flag is present. So long as the flag is present, the device will not deliver a ventricular pacing pulse in that cycle, even if there is no intrinsic ventricular activity. If there is no flag present at the start of a given cardiac cycle, a ventricular pacing pulse is delivered and this ventricular activity sets a flag for the subsequent cardiac cycle.
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Citations
11 Claims
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1. A method of selectively providing cardiac pacing with an implantable medical device comprising:
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detecting, via an electrode, ventricular activity during a given cardiac cycle; setting, via a processor, a flag during the given cardiac cycle when ventricular activity is detected during the given cardiac cycle; determining the flag is set at an onset of a current cardiac cycle, the current cardiac cycle occurring after the given cardiac cycle; precluding a ventricular pacing pulse during an entirety of the current cardiac cycle when the flag is set at the onset of the current cardiac cycle; and wherein the given and the current cardiac cycles are each initiated by an atrial event and extend only until a next subsequent atrial event. - View Dependent Claims (2, 3, 4)
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5. A method of selectively providing cardiac pacing with an implantable medical device comprising:
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detecting, via an electrode, ventricular activity during a given cardiac cycle; setting, via a processor, a flag during the given cardiac cycle when ventricular activity is detected during the given cardiac cycle; and determining the flag is set at an onset of a current cardiac cycle, the current cardiac cycle occurring after the given cardiac cycle; precluding a ventricular pacing pulse during an entirety of the current cardiac cycle when the flag is set at the onset of the current cardiac cycle; and further comprising initiating an atrial escape interval at a start of the current cardiac cycle when the flag is set at the onset of the current cardiac cycle; and wherein the given and the current cardiac cycles are each initiated by an atrial event and extend only until a next subsequent atrial event. - View Dependent Claims (6, 7, 8)
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9. A method of selectively providing cardiac pacing with an implantable medical device comprising:
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detecting, via an electrode, ventricular activity during a given cardiac cycle; setting, via a processor, a flag during the given cardiac cycle when ventricular activity is detected during the given cardiac cycle; and precluding a ventricular pacing pulse during an entirety current cardiac cycle when the flag is set at the onset of the current cardiac cycle; wherein the given and the current cardiac cycles are each initiated by an atrial event and extend only until a next subsequent atrial event; and
further comprising;initiating an AV interval if, at the onset of the current cardiac cycle, the flag is absent; delivering a ventricular pacing pulse at the expiration of the AV interval;
setting the flag for a subsequent cardiac cycle; andinitiating a VA interval with the delivered ventricular pace. - View Dependent Claims (10, 11)
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Specification