Dynamic morphology based atrial automatic threshold
First Claim
1. An implantable cardiac rhythm management system, comprising:
- a control processor configured to control delivery of atrial pacing pulses via a pulse generator;
a sensing circuit configured to sense a cardiac signal following an atrial pacing pulse; and
a pacing response classification processor configured to detect a peak of the cardiac signal and to discriminate between capture, noncapture, and fusion in the atrium based on a position of the peak in relation to regions characterized by a capture detection time interval, a capture detection amplitude threshold, and a pacing artifact amplitude threshold.
1 Assignment
0 Petitions
Accused Products
Abstract
Methods and systems for performing capture threshold tests are described. During an initialization procedure a capture detection interval and capture detection threshold are determined based on peak values of cardiac signals sensed following the supracapture threshold initialization pulses. Following initialization, a plurality of pacing pulses to the atrium are delivered and the peak values of the cardiac signals sensed following each of the plurality of pacing pulses are determined. The peak values are compared to the pacing artifact threshold and the capture detection threshold. A timing of each of the peak values is compared to the capture detection interval. For each pacing pulse, discrimination between a captured response, a noncaptured response, and a fusion response is based on the peak value and timing comparisons.
-
Citations
19 Claims
-
1. An implantable cardiac rhythm management system, comprising:
-
a control processor configured to control delivery of atrial pacing pulses via a pulse generator; a sensing circuit configured to sense a cardiac signal following an atrial pacing pulse; and a pacing response classification processor configured to detect a peak of the cardiac signal and to discriminate between capture, noncapture, and fusion in the atrium based on a position of the peak in relation to regions characterized by a capture detection time interval, a capture detection amplitude threshold, and a pacing artifact amplitude threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
-
-
18. An implatable cardiac rhythm management system, comprising:
-
a pulse generator; a control processor configured to control delivery of an atrial pacing pulse via the pulse generator; a sensing circuit configured to sense a cardiac signal following the atrial pacing pulse and to detect a peak of the sensed cardiac signal, the peak having a peak timing and a peak amplitude; a classification unit configured to determine a cardiac response to the atrial pacing pulse based on a position of the peak in relation to regions characterized by a capture detection timing interval, a capture detection amplitude threshold, and a pacing artifact amplitude threshold. - View Dependent Claims (19)
-
Specification