Pacing Mode Event Classification with Rate Smoothing and Increased Ventricular Sensing
First Claim
Patent Images
1. A method comprising:
- operating an implantable medical device (IMD) according to a ventricular pacing protocol (VPP) wherein a sensed ventricular event in a first cardiac cycle precludes cardiac pacing in a second cardiac cycle immediately subsequent to the first cardiac cycle;
initiating a first post atrial ventricular blanking (PAVB) interval following a first atrial pacing pulse under a first condition;
accelerating the first cardiac cycle by delivering a second atrial pacing pulse to terminate the first cardiac cycle early in response to a first sensed indicator;
initiating a second PAVB following the first atrial pacing pulse under a second condition, wherein the first PAVB is shorter in duration than the second PAVB; and
providing a crosstalk window subsequent to the atrial pacing pulse during which time sensing is permitted on a ventricular channel and events sensed during the crosstalk window are evaluated according to a feed forward protocol.
1 Assignment
0 Petitions
Accused Products
Abstract
An implantable medical device operates according to a ventricular pacing protocol (VPP) that precludes ventricular pacing in any cardiac cycle where a sensed ventricular event has occurred in the preceding cycle. Improved ventricular sensing, detection and classification is provided.
-
Citations
23 Claims
-
1. A method comprising:
-
operating an implantable medical device (IMD) according to a ventricular pacing protocol (VPP) wherein a sensed ventricular event in a first cardiac cycle precludes cardiac pacing in a second cardiac cycle immediately subsequent to the first cardiac cycle; initiating a first post atrial ventricular blanking (PAVB) interval following a first atrial pacing pulse under a first condition; accelerating the first cardiac cycle by delivering a second atrial pacing pulse to terminate the first cardiac cycle early in response to a first sensed indicator; initiating a second PAVB following the first atrial pacing pulse under a second condition, wherein the first PAVB is shorter in duration than the second PAVB; and providing a crosstalk window subsequent to the atrial pacing pulse during which time sensing is permitted on a ventricular channel and events sensed during the crosstalk window are evaluated according to a feed forward protocol. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. An implantable medical device (IMD) comprising:
-
a processor; a pulse generator in communication with the processor for selectively providing cardiac pacing stimuli; a lead system operably coupled to the pulse generator and the processor to deliver the cardiac pacing stimuli and to sense electrical signals representative of cardiac data; a ventricular pacing protocol (VPP) module operably coupled to the processor and configured to receive data indicative of a sensed ventricular event in a first cardiac cycle and to preclude cardiac pacing in a second cardiac cycle immediately subsequent to the first cardiac cycle; a pacing control module coupled with the processor and configured to initiate a first post atrial ventricular blanking period (PAVB) following an atrial pacing pulse if a first condition is met and initiate a second PAVB, longer in duration than the first PAVB, if a second condition is met and to run a crosstalk window during which sensed ventricular events are classified as a PVC unless a predetermined number of immediately preceding cardiac cycles each contained a ventricular event sensed during their respective crosstalk windows in which case the current event is classified as crosstalk; and a VPP rate smoothing module configured to deliver a second atrial pacing pulse following the first PAVB to terminate a current cardiac cycle early in response to a fist sensed indicator. - View Dependent Claims (11, 12, 13, 14)
-
-
15. An apparatus comprising:
-
means for operating an implantable medical device (IMD) according to a ventricular pacing protocol (VPP) wherein a sensed ventricular event in a first cardiac cycle precludes cardiac pacing in a second cardiac cycle immediately subsequent to the first cardiac cycle; means for initiating a first post atrial ventricular blanking (PAVB) interval following an atrial pacing pulse under a first condition; means for initiating a second PAVB following the atrial pacing pulse under a second condition, wherein the first PAVB is shorter in duration than the second PAVB; means for accelerating the first cardiac cycle by delivering a second atrial pacing pulse to terminate the first cardiac cycle early in response to a first sensed indicator; and means for providing a crosstalk window subsequent to the atrial pacing pulse during which time sensing is permitted on a ventricular channel and events sensed during the crosstalk window are evaluated according to a feed forward protocol. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23)
-
Specification