SYSTEM AND METHOD FOR DETECTING ATRIAL EVENTS OF A HEART

摘要

A continuous monitoring system monitors atrial activity of a heart, and activates an atrial fibrillation detector when atrial fibrillation is suspected. The system includes an A wave detector (53, 55) for detecting A waves of the heart. The A wave detector has a first threshold, and a selected second threshold higher than the first threshold. An R wave detector (52) for detecting R waves of the heart is coupled to the A wave detector for selecting the second threshold of the A wave detector during each detected R wave of the heart. An atrial cycle length determining stage (64) determines atrial cycle length, and a comparator activates atrial fibrillation detection when an atrial cycle length is shorter than a predetermined cycle length.