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1. (WO2018200227) CARDIAC EVENT SENSING IN AN IMPLANTABLE MEDICAL DEVICE

Pub. No.:    WO/2018/200227    International Application No.:    PCT/US2018/027704
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Tue Apr 17 01:59:59 CEST 2018
IPC: A61N 1/39
A61N 1/37
A61N 1/365
A61B 5/0468
A61B 5/0452
A61B 5/00
A61B 5/04
A61N 1/05
Applicants: MEDTRONIC, INC.
Inventors: CAO, Jian
CHENG, Alan
Title: CARDIAC EVENT SENSING IN AN IMPLANTABLE MEDICAL DEVICE
Abstract:
An implantable medical device performs a method that includes detecting a cardiac event interval that is greater than a P-wave oversensing threshold interval. In response to detecting the cardiac event interval greater than the P-wave oversensing threshold interval, the device determines the amplitude of the sensed cardiac signal and withholds restarting a pacing interval in response to the amplitude satisfying P-wave oversensing criteria. A pacing pulse may be generated in response to the pacing interval expiring without sensing an intrinsic cardiac electrical event that is not detected as a P-wave oversensing event.