System and method for detecting atrial events of a heart

Details System and method for detecting atrial events of a heart System and method for detecting atrial events of a heart

1998-07-01

2000-03-21

Jastrzab, Jeffrey R.

Surgery

Diagnostic testing

Cardiovascular

607 5, A61B 5046

Patent

active

060412518

ABSTRACT:
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 for detecting A waves of the heart and providing an A wave detection signal indicating each detected A wave. The A wave detector has a first threshold and a selectable second threshold higher than the first threshold. An R wave detector 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 determines atrial cycle lengths from the A wave detection signal and a comparator activates atrial fibrillation detection when an atrial cycle length is shorter than a predetermined cycle length.

REFERENCES:
patent: 5267559 (1993-12-01), Jin et al.
patent: 5685315 (1997-11-01), McClure et al.

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