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(Chest. 1973;63:783-789.)
© 1973 American College of Chest Physicians

Atrioventricular Sequential Pacing and Pacemakers

Seymour Furman M.D.1; Henrietta Reicher-Reiss M.D.1; and Doris J. W. Escher M.D.1

1 Cardio-Thoracic Service, Department of Surgery, and the Cardiology Service, Department of Medicine, Montefiore Hospital and Medical Center, New York City

Marked symptomatic sinus bradycardia was treated by permanent pervenous Bifocal (sequential atrioventricular) demand pacemaker (BFD) implantation in four patients. The specific mode of operation and the complications encountered are analyzed. In the group of implants, six different BFD pulse generators were used; two of these generators underwent premature battery failure, one developed runaway and a fourth, premature circuit instability. Improper position or later displacement of the J-shaped atrial electrode prompted a special problem—ventricular stimulator inhibition. This self-inhibition is unique to this variety of generator and requires repositioning of the atriel electrode. The longterm high drain of energy and the electrical instability of the pulse generator are problems remaining to be solved before this mode of pacing can reach its full potential use.




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K. Jeffrey and V. Parsonnet
Cardiac Pacing, 1960–1985 : A Quarter Century of Medical and Industrial Innovation
Circulation, May 19, 1998; 97(19): 1978 - 1991.
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