A comparison of the acute and long-term hemodynamic effects of ventricular inhibited and atrial synchronous ventricular inhibited pacing.
- 1 May 1982
- journal article
- research article
- Published by Ovid Technologies (Wolters Kluwer Health) in Circulation
- Vol. 65 (5), 846-855
- https://doi.org/10.1161/01.cir.65.5.846
Abstract
Sixteen patients treated with a noninvasively programmable pacemaker were examined after a prolonged period of ventricular inhibited (VVI) and atrial synchronous ventricular inhibited (VDD) pacing. Maximal working capacity was determined by bicycle ergometry. Atrial and ventricular rates, brachial artery cuff pressure and breathing rate were determined at rest and during exercise. There was a mean increase in working capacity of 24% with VDD compared with VVI pacing (p less than 0.001). Thirteen of the patients were catheterized. During VDD pacing, cardiac output was significantly higher, particularly during exercise (+/- 32%) due to the capability of heart rate increase and despite a substantial compensatory stroke volume increase during VVI pacing. Arteriovenous oxygen difference was much higher during VVI pacing, reaching 164 +/- 14 ml/l during the highest work load, while the corresponding level during VDD pacing was 140 +/- 14 ml/l (p less than 0.001). During exercise, arterial blood lactate was significantly higher during VVI than during VDD pacing. Heart size was significantly smaller, 568 +/- 98 vs 530 +/- 96 ml/m2 BSA (p less than 0.05), during VDD pacing a questionnaire was completed by the patients to evaluate subjective symptoms and pacemaker preference. This part of the study favored the VDD mode of pacing. The conclusion of this study is that VDD pacing is superior to VVI pacing.This publication has 16 references indexed in Scilit:
- Clinical Evaluation of Atrial Synchronous Ventricular Inhibited PacemakersPacing and Clinical Electrophysiology, 1980
- A New Lead for Transvenous Atrial Pacing and Sensing Clinical and Electrophysiological ExperiencesPacing and Clinical Electrophysiology, 1980
- Atrial PacingPacing and Clinical Electrophysiology, 1980
- Electrophysiological and haemodynamic basis for application of new pacemaker technology in sick sinus syndrome and atrioventricular block.Heart, 1979
- Clinical use of a new transvenous atrial leadThe American Journal of Cardiology, 1977
- Eine einfach und zuverlässig im Vorhof anzubringende Herzschrittmacher-ElektrodeDeutsche Medizinische Wochenschrift (1946), 1977
- Design of exercise test, with special reference to heart patients.Heart, 1976
- Adaptation of the left ventricle to sudden changes in heart rate in patients with artificial pacemakersCardiovascular Research, 1973
- The Synchronous PacerAnnals of Surgery, 1966
- Atrial contribution to cardiac output in complete heart blockThe American Journal of Cardiology, 1965