Comparison of exercise performance of six rate-adaptive right ventricular cardiac pacemakers

The American Journal of Cardiology
C P LauA J Camm

Abstract

Single chamber cardiac pacemakers capable of automatically adjusting the rate according to body requirements have become an important means of physiologic pacing in patients with bradycardias. Such pacemakers are dependent on a nonatrial sensor of physiologic needs to optimize the rate response. Fifty rate-adaptive right ventricular pacemakers were implanted in 46 patients with a mean age of 60 +/- 4 years (mean +/- standard error of the mean). There were 2 types of activity-sensing pacemakers (Activitrax and Sensolog 702), the QT-sensing pacemakers (TX2 and Quintech), 2 types of respiratory-sensing pacemakers (Biorate [RDP3 and MB1] and Meta) and a rate-adaptive pacemaker that senses right ventricular dP/dt (Deltatrax). The rate responses of a group of 9 volunteers of similar age (62 +/- 2 years) were also included for comparison. Improvement in exercise duration in the rate-adaptive mode compared to the constant-rate ventricular pacing (VVI) mode was achieved during randomized symptom-limited treadmill exercise (from 26 to 49%). Compared with the sinus responses, the activity-sensing pacemakers responded most appropriately in speed. However, their rate responses were not related to workload and had lower correlations with est...Continue Reading

References

Nov 1, 1986·Pacing and Clinical Electrophysiology : PACE·K M Anderson, A A Moore
Nov 1, 1988·Pacing and Clinical Electrophysiology : PACE·W BouteM J Begemann
Nov 1, 1982·Pacing and Clinical Electrophysiology : PACE·A WirtzfeldJ Munteanu
Nov 1, 1984·Pacing and Clinical Electrophysiology : PACE·P Gillette

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Citations

Apr 1, 1995·Journal of the American College of Cardiology·D W ReynoldsT D Bennett
Aug 14, 2003·Pacing and Clinical Electrophysiology : PACE·Lothar GriesbachUNKNOWN RAPID Study Investigators
Dec 19, 1998·Journal of Cardiopulmonary Rehabilitation·C T SharpR G Haennel
Oct 1, 1990·Pacing and Clinical Electrophysiology : PACE·C P LauW H Leung
Aug 1, 1990·Pacing and Clinical Electrophysiology : PACE·J A Trigano
Aug 1, 1990·Pacing and Clinical Electrophysiology : PACE·N SulkeE Sowton
Aug 1, 1992·Pacing and Clinical Electrophysiology : PACE·H Mond, N Strathmore
Jul 1, 1992·Pacing and Clinical Electrophysiology : PACE·C M BellamyR G Charles
Aug 1, 1992·Pacing and Clinical Electrophysiology : PACE·C P Lau
Sep 1, 1993·Pacing and Clinical Electrophysiology : PACE·D T Connelly
Dec 1, 1994·Pacing and Clinical Electrophysiology : PACE·C P Lau, S K Leung
Dec 1, 1994·Pacing and Clinical Electrophysiology : PACE·S M DaileyG N Kay
Aug 1, 1994·Pacing and Clinical Electrophysiology : PACE·G N KayV J Plumb
Nov 1, 1994·Pacing and Clinical Electrophysiology : PACE·S SinhaJ L Caplin
Nov 1, 1994·Pacing and Clinical Electrophysiology : PACE·A K SladeA J Camm
Mar 1, 1995·Pacing and Clinical Electrophysiology : PACE·I OvsyshcherC Bondy
Aug 1, 1996·Pacing and Clinical Electrophysiology : PACE·S E GreenhutC P Lau
May 1, 1997·Pacing and Clinical Electrophysiology : PACE·A CelikerS Ozme
Apr 29, 1998·Pacing and Clinical Electrophysiology : PACE·S GarrigueJ Clémenty
Sep 2, 1998·Pacing and Clinical Electrophysiology : PACE·S K LeungK Yakimow
Sep 23, 1998·Pacing and Clinical Electrophysiology : PACE·R G HaennelE Busse
Nov 25, 1998·Pacing and Clinical Electrophysiology : PACE·H TheresK Prest-Berg
Oct 12, 2000·Pacing and Clinical Electrophysiology : PACE·H IjiriK Tamura
Oct 3, 2008·Mayo Clinic Proceedings·Karoly KaszalaKenneth A Ellenbogen
Jan 31, 2006·Pacing and Clinical Electrophysiology : PACE·Luigi PadelettiS Serge Barold

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