Patent ID: 8401644
Filing Date: 2013-03-19
Classification: A61B,A61N

Abstract:
1. A method of post-processing sensing data generated by and stored within an implantable medical device, comprising: receiving the sensing data generated by the implantable medical device with an external access device, wherein the sensing data includes sensed atrial events and sensed ventricular events; determining, with the external access device, in response to the received sensing data, instances where the implantable medical device identified a cardiac event being detected in response to the sensing data; determining a first median of a first set of ventricular sensed event to ventricular sensed event intervals of the received sensing data, wherein the first set of intervals includes sensing data occurring just prior to the cardiac event being detected, and wherein the sensing data occurring just prior to the cardiac event being detected includes one or more ventricular sensed event to ventricular sensed event intervals associated with the cardiac event being detected; determining a second median of a second set of ventricular sensed event to ventricular sensed event intervals of the received sensing data, wherein the second set of intervals includes sensing data occurring prior to a number of intervals associated with the cardiac event being detected, and wherein the second set of intervals does not include the one or more ventricular sensed event to ventricular sensed event intervals associated with the cardiac event being detected; and determining, with the external access device, whether there is an abrupt onset of the cardiac event in response to determining that a difference between the first median and the second median is greater than a predetermined threshold.