Patent ID: 8694098
Filing Date: 2014-04-08
Classification: A61B,A61N

Abstract:
1. A method of detecting spontaneous ventricular events in a heart by using an implantable device, the method comprising: (A) using the implantable device to collect data relating to electrical activity of the heart; (B) applying a sensitivity function to the collected data to detect occurrence of ventricular events, wherein the sensitivity function is based on an adjustable detection threshold; (C) determining whether noise is suspected to be present in the collected data; (D) increasing the adjustable detection threshold upon determining that noise is suspected to be present in the collected data; (E) providing a stimulation pulse to the heart when a ventricular event has not occurred after a predetermined escape interval; and, following the stimulation pulse, (F) applying a capture test to detect whether an induced depolarization has occurred; (G) reducing the adjustable detection threshold when an induced depolarization is not detected based on the capture test; and (H) maintaining the adjustable detection threshold when an induced depolarization is detected based on the capture test.