Synchronized ventricular pacing to promote atrial sensing
AssigneeCardiac Pacemakers, Inc.
InventorsJaeho Kim, Joseph M. Bocek, Anthony S. Harrington
Life of this patent
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Abstract
Methods and systems are described that involve synchronized ventricular pacing that promotes sensing of atrial events. The atrioventricular pacing delay is modified based on characteristics of previously sensed atrial events. The modified AV delay is implemented relative to a first atrial event. A second AV delay is implemented relative to a second atrial event if the second atrial event is sensed during the modified AV delay. A ventricular pacing pulse is delivered following the second AV delay.
Claims17
A method of cardiac pacing, comprising:
- providing a first atrioventricular (AV) delay used for pacing a ventricle;
- modifying the first atrioventricular (AV) delay based on characteristics of previously sensed atrial events;
- using a first atrial event to initiate the modified AV delay;
- using a second atrial event to initiate, during the modified AV delay, a second AV delay if the second atrial event is sensed during the modified AV delay, the second AV delay being different than the modified AV delay;
- and
- delivering a ventricular pacing pulse at an end the second AV delay.
A cardiac pacing device, comprising:
- sensing circuitry configured to sense electrical signals of an atrium;
- a pulse generator configured to deliver electrical stimulation to a ventricle;
- and
- a processor configured to provide a first atrioventricular delay used for pacing and to modify the first atrioventricular delay based on characteristics of one or more previous atrial events and to implement the modified AV delay, the processor further configured to use a second atrial to initiate, during the modified AV delay, a second AV delay if the second atrial event is sensed during the modified AV delay and to control delivery of a ventricular pacing pulse at an end of the second AV delay the second AV delay being different than the modified AV delay.
A cardiac pacing system, comprising:
- means for implementing a first atrioventricular (AV) delay relative to a non-refractory atrial event;
- means for modifying the first atrioventricular (AV) delay based on characteristics of previously sensed atrial events;
- means for initiating, during the modified AV delay, a second AV delay using a second atrial event if the second atrial event is sensed during the modified AV delay, the second AV delay being different than the modified AV delay;
- and
- means for delivering a ventricular pacing pulse at an end of the second AV delay.
Dependencies are inferred from the claim text.