Cardiac response classification using multisite sensing and pacing
First Claim
Patent Images
1. A method of determining a cardiac response to a pacing pulse, comprising:
- delivering two or more initialization pacing pulses to the heart using a first electrode combination of a plurality of electrodes that are electrically coupled to a heart;
sensing for a cardiac response following each of the two or more initialization pacing pulses using a second electrode combination;
for each of the two or more initialization pacing pulses, determining a delay interval between when the initialization pacing pulse was delivered using the first electrode combination until when a corresponding cardiac response was sensed using the second electrode combination;
following delivery of the two or more initialization pacing pulses;
delivering a pacing pulse to the heart using the first electrode combination;
sensing a cardiac response to the pacing pulse using the second electrode combination; and
classifying the cardiac response to the pacing pulse as one of a captured response and a non-captured response, the classifying step including;
determining if the sensed cardiac response to the pacing pulse has a predetermined characteristic that falls within a classification window, the pre-determined characteristic comprising a peak amplitude that exceeds a pre-determined threshold and wherein the classification window begins after a predetermined time delay following the pacing pulse and extends for a window duration, wherein the predetermined time delay is chosen based at least in part on the determined delay intervals of each of two or more of the initialization pacing pulses.
0 Assignments
0 Petitions
Accused Products
Abstract
Methods and devices for classifying a cardiac pacing response involve using a first electrode combination for pacing and a second electrode combination for sensing a cardiac signal following pacing. The cardiac response to pacing may be classified using the sensed cardiac signal. One process involves using the sensed cardiac signal to detect the cardiac response as a fusion/pseudofusion beat. Another process involves using the sensed cardiac signal to classify the cardiac response to pacing as one of at least three cardiac response types.
-
Citations
20 Claims
-
1. A method of determining a cardiac response to a pacing pulse, comprising:
-
delivering two or more initialization pacing pulses to the heart using a first electrode combination of a plurality of electrodes that are electrically coupled to a heart; sensing for a cardiac response following each of the two or more initialization pacing pulses using a second electrode combination; for each of the two or more initialization pacing pulses, determining a delay interval between when the initialization pacing pulse was delivered using the first electrode combination until when a corresponding cardiac response was sensed using the second electrode combination; following delivery of the two or more initialization pacing pulses; delivering a pacing pulse to the heart using the first electrode combination; sensing a cardiac response to the pacing pulse using the second electrode combination; and classifying the cardiac response to the pacing pulse as one of a captured response and a non-captured response, the classifying step including; determining if the sensed cardiac response to the pacing pulse has a predetermined characteristic that falls within a classification window, the pre-determined characteristic comprising a peak amplitude that exceeds a pre-determined threshold and wherein the classification window begins after a predetermined time delay following the pacing pulse and extends for a window duration, wherein the predetermined time delay is chosen based at least in part on the determined delay intervals of each of two or more of the initialization pacing pulses. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
-
-
17. A method of determining a cardiac response to a pacing pulse, comprising:
-
delivering two or more initialization pacing pulses to a heart using a first electrode combination, wherein the first electrode combination includes an electrode associated with a left ventricle; sensing for a cardiac response following each of the two or more initialization pacing pulses using a second electrode combination, wherein the second electrode combination includes an electrode associated with a right ventricle; for each of the two or more initialization pacing pulses, determining a delay interval between when the initialization pacing pulse was delivered using the first electrode combination until when a corresponding cardiac response was sensed using the second electrode combination; choosing a predetermined time delay based, at least in part, on the determined delay intervals of each of two or more of the initialization pacing pulses; following delivery of the two or more initialization pacing pulses; delivering a pacing pulse to the heart using the first electrode combination; sensing a cardiac response to the pacing pulse using the second electrode combination; and classifying the cardiac response to the pacing pulse as one of a captured response and a non-captured response, the classifying step including; determining if the sensed cardiac response has a predetermined characteristic that falls within a classification window, the pre-determined characteristic comprising a peak amplitude that exceeds a pre-determined threshold and wherein the classification window begins after the predetermined time delay following the pacing pulse and extends for a window duration. - View Dependent Claims (18)
-
-
19. A medical device, comprising:
-
a plurality of electrodes electrically configured to be coupled to a heart; a pulse delivery circuit configured to deliver a pacing pulse to a heart using a first electrode combination including at least one electrode associated with a left ventricle; a sensing circuit configured to sense a cardiac response for cardiac response classification following the pacing pulse using a second electrode combination including at least one electrode associated with a right ventricle; a control circuit, the control circuit coupled to the sensing circuit and configured to classify the cardiac response to the pacing pulse as one of a captured response and a non-captured response by determining if the sensed cardiac response has a predetermined characteristic that falls within a classification window, the pre-determined characteristic comprising a peak amplitude that exceeds a pre-determined threshold, and wherein the classification window begins after a predetermined time delay following the pacing pulse and extends for a window duration; and wherein before the pulse delivery circuit delivers the pacing pulse to the heart, the control circuit causes the pulse delivery circuit to provide two or more initialization pacing pulses to the heart using the first electrode combination, wherein the sensing circuit senses for a cardiac response following each of the two or more initialization pacing pulses using the second electrode combination; for each initialization pacing pulse, the control circuit is configured to determine a delay interval between when the initialization pacing pulse was provided using the first electrode combination until when a corresponding cardiac response was sensed using the second electrode combination; and wherein the control circuit is further configured to establish the predetermined time delay based, at least in part, on the delay intervals of the two or more initialization pacing pulses. - View Dependent Claims (20)
-
Specification