PMID: 3753992Mar 1, 1986Paper

Selective atrial sensing in dual chamber pacemakers eliminates endless loop tachycardia

Journal of the American College of Cardiology
P T Klementowicz, S Furman

Abstract

With the introduction of dual chamber pacemakers that have multiple atrial amplitude sensing values, selective P wave sensing is possible. Five consecutive patients were studied who had 1) retrograde atrioventricular conduction, 2) anterograde atrial signals that were at least 1.4 times larger than their corresponding retrograde atrial signals, and 3) dual chamber pulse generators that are capable of discriminating this difference in atrial amplitude. In each patient the pacemaker was programmed in the DDD mode and the postventricular atrial refractory interval was at least 100 ms shorter than the individual's minimal retrograde conduction time. Two atrial sensitivity settings were evaluated in each patient: a high setting to ensure sensing of both anterograde and retrograde P waves, and a lower setting to allow sensing of anterograde P waves only. Ambulatory electrocardiographic monitoring demonstrated that with a high sensitivity setting, each patient sustained endless loop tachycardia (mean number of episodes 41, range 6 to 143) and that a low atrial sensitivity setting eliminated the tachycardia. With the lower atrial sensitivity setting, there was only sporadic atrial undersensing (1.5 episodes for each 1,000 P waves). Thi...Continue Reading

References

Jun 1, 1977·American Heart Journal·S FurmanV De Caprio
Dec 1, 1985·Journal of the American College of Cardiology·P T Klementowicz, S Furman
Jul 1, 1982·Pacing and Clinical Electrophysiology : PACE·K Den DulkH J Wellens
Jul 1, 1982·Pacing and Clinical Electrophysiology : PACE·S Furman, J D Fisher
Jan 1, 1982·Pacing and Clinical Electrophysiology : PACE·S Furman, J A Cooper
Jan 1, 1983·Pacing and Clinical Electrophysiology : PACE·D L Hayes, S Furman
Sep 1, 1983·Annals of Internal Medicine·R M LuceriR J Myerburg
Aug 1, 1983·The American Journal of Cardiology·P O LittlefordC J Pepine
Jul 1, 1981·Progress in Cardiovascular Diseases·S S BaroldR A Heinle

❮ Previous
Next ❯

Citations

Dec 1, 1988·The American Journal of Medicine·S S BaroldR A Heinle
Mar 1, 1990·Current Problems in Cardiology·S Furman, J Gross
Jan 1, 1987·Pacing and Clinical Electrophysiology : PACE·S S BaroldR A Heinle
Jan 15, 1988·The American Journal of Cardiology·J D FisherA D Mercando
Nov 1, 1988·Pacing and Clinical Electrophysiology : PACE·R V Calfee
Apr 1, 1988·Pacing and Clinical Electrophysiology : PACE·L S Dreifus
Nov 1, 1988·Pacing and Clinical Electrophysiology : PACE·D LamaisonM Limousin
Nov 1, 1988·Pacing and Clinical Electrophysiology : PACE·H F McAlisterS Furman
Sep 1, 1987·Pacing and Clinical Electrophysiology : PACE·H Herscovici, R S Schallhorn

❮ Previous
Next ❯

Related Concepts

Related Feeds

Cardiology Journals

Discover the latest cardiology research in this collection of the top cardiology journals.

Cardiac Conduction System

The cardiac conduction system is a specialized tract of myocardial cells responsible for maintaining normal cardiac rhythm. Discover the latest research on the cardiac conduction system here.