IMPROVEMENT OF EXERCISE TOLERANCE CAPACITY BY USE OF ACTIVITY-SENSING RATE RESPONSIVE PACEMAKER

REMY SHINMYO; AKIRA HASEGAWA; MASAKO HATORI; TETSURO IMANARI; SACHIHIKO FUSE; AKIHIKO NAKANO; ETSUO YAMAGUCHI; YASUHIKO YAMAUCHI; TADASHI SUZUKI; KAZUHIKO MURATA

doi:10.2974/kmj1951.40.101

REMY SHINMYO, AKIRA HASEGAWA, MASAKO HATORI, TETSURO IMANARI, SACHIHIKO FUSE, AKIHIKO NAKANO, ETSUO YAMAGUCHI, YASUHIKO YAMAUCHI, TADASHI SUZUKI, KAZUHIKO MURATA

Author information

REMY SHINMYO
Second Department of Internal Medicine Gunma University School of Medicine
AKIRA HASEGAWA
Second Department of Internal Medicine Gunma University School of Medicine
MASAKO HATORI
Second Department of Internal Medicine Gunma University School of Medicine
TETSURO IMANARI
Second Department of Internal Medicine Gunma University School of Medicine
SACHIHIKO FUSE
Second Department of Internal Medicine Gunma University School of Medicine
AKIHIKO NAKANO
Second Department of Internal Medicine Gunma University School of Medicine
ETSUO YAMAGUCHI
Second Department of Internal Medicine Gunma University School of Medicine
YASUHIKO YAMAUCHI
Second Department of Internal Medicine Gunma University School of Medicine
TADASHI SUZUKI
Second Department of Internal Medicine Gunma University School of Medicine
KAZUHIKO MURATA
Second Department of Internal Medicine Gunma University School of Medicine

Keywords: Rate-responsive pacemaker, Anaerobic threshold, Treadmill exercise test, Exercise tolerance

JOURNAL FREE ACCESS

1990 Volume 40 Issue 1 Pages 101-105

DOI https://doi.org/10.2974/kmj1951.40.101

Details

Abstract

The Activity-Sensing Rate-Responsive Pacemaker (RR-PM) varies the pacing rate in response to the level of physical activity.
The effect of RR-PM was compared with that of conventional fixed-rate pacing (VVI-PM) on symptoms and exercise capacity (peak oxygen consumption and anaerobic threshold) during treadmill exercise in 6 patients between the ages of 38 and 75 years with complete atrioventricular block. A newly programmed treadmill exercise protocol was used for the measurement of anaerobic threshold.
In the Rate-Responsive (RR) mode, the heart rate increased from 61±4 beats/min (bpm) to 103±12 bpm during maximal exercise ; the peak oxygen consumption and oxygen consumption at the anaerobic threshold significantly increased to a greater extent in RR mode than it did in fixed rate pacing mode. Thus, the use of RR-PM leads to better exercise tolerance than VVI-PM in complete atrioventricular block patients.

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