Atrial flutter cardioverter and method

Details Atrial flutter cardioverter and method Atrial flutter cardioverter and method

1997-04-07

1998-09-29

Jastrzab, Jeffrey R.

Surgery: light, thermal, and electrical application

Light, thermal, and electrical application

Electrical therapeutic systems

A61N 139

Patent

active

058140816

ABSTRACT:
An implantable atrial defibrillator includes a lead system having a plurality of electrodes to deliver a cardioverting pulse to atria of a heart, for sensing A waves of the heart, and for sensing R waves of the heart. A first detector detects the A waves sensed by the lead system and a second detector detects the R waves sensed by the lead system. An inhibit stage defines an inhibit time period responsive to each detected R wave and an output provides the cardioverting pulse to the lead system responsive to an A wave being detected. The inhibit stage precludes provision of the cardioverting pulse during each inhibit time period.

REFERENCES:
patent: 5620468 (1997-04-01), Mongeon et al.
Keelan et al. "Determination of the Minimum Heart Rate Deleceration for Safe Axriel Defibrillation", Circulation, Nov. 1996 Abstracts (405).
Keelan et al. "Atriel Defibrilation Shocks Synchronized to QRS Complexs Preceded by Short to Long Cycles . . . ", Apr. 1996 Pace Abstracts (324).
Waldo et al. "Atrial Flutter"p. 389.
Keane, "Impact of Pulse Characteristics on Atrial Defibrillation Energy Requirements" PACE, May '94 Part II vol. 17, pp. 1048-1056.

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