Dual chamber cardiac pacemaker employing hysteresis to maximize

Details Dual chamber cardiac pacemaker employing hysteresis to maximize Dual chamber cardiac pacemaker employing hysteresis to maximize

1992-06-08

1994-02-01

Kamm, William E.

Surgery: light, thermal, and electrical application

Light, thermal, and electrical application

Electrical therapeutic systems

607 30, A61N 1362

Patent

active

052828387

ABSTRACT:
A DDD pacemaker including stimulating means to stimulate the ventricles of a heart after a predetermined A-V delay period includes means for adjusting the A-V delay period to enhance the probability of detecting naturally occurring ventricular depolarization signals when such signals are being detected at a predetermined rate and switching to a more hemodynamically appropriate A-V delay period when paced beats predominate. The invention is implemented in software run on a microprogrammable controller comprising the DDD pacemaker.

REFERENCES:
patent: 4421116 (1983-12-01), Markowitz
patent: 4554921 (1985-11-01), Boute et al.
patent: 4856524 (1989-08-01), Baker, Jr.
patent: 5016630 (1991-05-01), Moberg
patent: 5024222 (1991-06-01), Thacker

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