Pacemaker programmer-based automatic retrograde conduction measurement
First Claim
1. A method of automatically confirming the presence of retrograde conduction in a pacemaker patient comprising the steps of:
- (a) generating a series of first ventricular pacing pulses and sensing a succeeding atrial beat,(b) measuring intervals between each of said first ventricular pacing pulses and said succeeding sensed atrial beat,(c) determining whether said intervals are consistent,(d) if said intervals are consistent, then generating several second ventricular pacing pulses in a manner that reduces the effect of retrograde conduction, and(e) confirming that retrograde conduction is present only if, while step (d) is performed, atrial beats are not sensed after one of said intervals following said second ventricular pacing pulses.
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Accused Products
Abstract
A method for automatically determining the existence of retrograde conduction in a pacemaker patient. At a selected ventricular pacing rate, A-senses are detected, and V-pace to A-sense intervals are measured. If the measured intervals are consistent, it is possible that there is retrograde conduction. To confirm that the A-senses were not due to noise, atrial premature beats, etc., subsequent ventricular pacing pulses are generated in a manner that eliminates the possibility of atrial beats being due to retrograde conduction; a series of simultaneous atrial and ventricular pacing pulses are generated. If A-senses consistent with the previously measured intervals are not sensed, retrograde conduction is confirmed.
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Citations
30 Claims
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1. A method of automatically confirming the presence of retrograde conduction in a pacemaker patient comprising the steps of:
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(a) generating a series of first ventricular pacing pulses and sensing a succeeding atrial beat, (b) measuring intervals between each of said first ventricular pacing pulses and said succeeding sensed atrial beat, (c) determining whether said intervals are consistent, (d) if said intervals are consistent, then generating several second ventricular pacing pulses in a manner that reduces the effect of retrograde conduction, and (e) confirming that retrograde conduction is present only if, while step (d) is performed, atrial beats are not sensed after one of said intervals following said second ventricular pacing pulses. - View Dependent Claims (2, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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- 3. A method in accordance with claim wherein step (d) further comprises the step of generating an atrial pulse approximately simultaneously with each second ventricular pacing pulse.
Specification