Retrograde atrial sensing for identifying sub-threshold atrial pacing
First Claim
Patent Images
1. A method, comprising:
- performing atrial capture threshold testing in accordance with an atrial capture threshold testing schedule;
monitoring for retrograde P-waves at least during times other than times during which scheduled atrial capture threshold testing is performed;
detecting, during the monitoring, a retrograde P-wave indicative of sub-threshold atrial pacing;
performing an unscheduled atrial capture threshold test in response to detecting the retrograde P-wave;
adjusting pacing of the atrium based on the unscheduled atrial capture threshold test; and
generating a retrograde P-wave template indicative of retrograde conduction, wherein detecting the retrograde P-wave during monitoring comprises identifying the retrograde P-wave using the generated retrograde P-wave template.
0 Assignments
0 Petitions
Accused Products
Abstract
Atrial capture threshold testing is performed in accordance with an atrial capture threshold testing schedule. Monitoring for retrograde P-waves occurs at least during times other than times during which scheduled atrial capture threshold testing is performed. In response to detecting a retrograde P-wave indicative of sub-threshold atrial pacing during monitoring, an unscheduled atrial capture threshold test is performed and pacing of the atrium is adjusted based on the unscheduled atrial capture threshold test.
-
Citations
17 Claims
-
1. A method, comprising:
-
performing atrial capture threshold testing in accordance with an atrial capture threshold testing schedule; monitoring for retrograde P-waves at least during times other than times during which scheduled atrial capture threshold testing is performed; detecting, during the monitoring, a retrograde P-wave indicative of sub-threshold atrial pacing; performing an unscheduled atrial capture threshold test in response to detecting the retrograde P-wave; adjusting pacing of the atrium based on the unscheduled atrial capture threshold test; and generating a retrograde P-wave template indicative of retrograde conduction, wherein detecting the retrograde P-wave during monitoring comprises identifying the retrograde P-wave using the generated retrograde P-wave template. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A method, comprising:
-
performing atrial capture threshold testing in accordance with an atrial capture threshold testing schedule; monitoring for retrograde P-waves at least during times other than times during which scheduled atrial capture threshold testing is performed; detecting, during the monitoring, a retrograde P-wave indicative of sub-threshold atrial pacing; performing an unscheduled atrial capture threshold test in response to detecting the retrograde P-wave; adjusting pacing of the atrium based on the unscheduled atrial capture threshold test; and generating a retrograde P-wave template indicative of retrograde conduction, wherein performing the unscheduled atrial capture threshold test comprises identifying a retrograde P-wave using the generated retrograde P-wave template.
-
-
9. A method, comprising:
-
performing atrial capture threshold testing in accordance with an atrial capture threshold testing schedule; monitoring for retrograde P-waves at least during times other than times during which scheduled atrial capture threshold testing is performed; detecting, during the monitoring, a retrograde P-wave indicative of sub-threshold atrial pacing; performing an unscheduled atrial capture threshold test in response to detecting the retrograde P-wave; and adjusting pacing of the atrium based on the unscheduled atrial capture threshold test; wherein detecting the retrograde P-wave comprises determining at least one of the frequency content or slew rate of an atrial response.
-
-
10. A system for use with a patient, comprising:
-
a plurality of implantable electrodes configured for cardiac electrical activity sensing and cardiac pacing; a housing configured for implantation in the patient; detection circuitry provided in the housing and configured to detect retrograde P-waves indicative of sub-threshold atrial pacing, and a controller provided in the housing and configured to perform atrial capture threshold testing in accordance with an atrial capture threshold testing schedule, the controller configured to perform an unscheduled atrial capture threshold test in response to the detection circuitry detecting a retrograde P-wave during a time other than a time during which scheduled atrial capture threshold testing is performed, the controller configured to adjust atrial pacing based on the unscheduled atrial capture threshold test; wherein the controller is configured to coordinate generation of a retrograde P-wave template indicative of retrograde conduction, and the detection circuitry is configured to detect the retrograde P-wave using the retrograde P-wave template. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
-
Specification