Journal Article

The effects of orthostasis on the ventricular-evoked response

F. Saborowski, G. Krahé-Fritsch, M. Krakau, K. Wallbrueck and M. Schaldach

in EP Europace

Published on behalf of European Heart Rhythm Association of the European Society of Cardiology (ESC)

Volume 2, issue 4, pages 333-338
Published in print October 2000 | ISSN: 1099-5129
Published online October 2000 | e-ISSN: 1532-2092 | DOI:
The effects of orthostasis on the ventricular-evoked response

Show Summary Details



The effects of orthostasis on the morphology of the ventricular-evoked response were investigated.

Methods and Results

Seven patients (five females; 74·9±4·6 years) with second- or third-degree atrioventricular block received DDD pacemakers Physios CTM 01 with fractal-coated ventricular leads (both Biotronik, Germany). At their 3-month follow-up sessions, these patients underwent tilt-table tests. Heart rate, mean arterial blood pressure and ventricular-evoked response were measured continuously. Signals were averaged over 15 consecutive beats. Coefficients of correlation between selected ventricular-evoked response parameters and heart rate or mean arterial blood pressure were calculated.

Tilt upwards affected heart rate, mean arterial blood pressure and ventricular-evoked response extremes showed non-uniform, patient-specific changes that were not related directly to other parameters. Heart rates significantly increased in six patients following tilt upwards. For all patients, ventricular-evoked response plateau amplitudes immediately increased with tilt upwards. Furthermore, repolarization times correlated with changes in heart rates (r=−0·78).


Monitoring of the ventricular-evoked response during tilt-table testing revealed that the plateau amplitude of the ventricular-evoked response depends on the patient's position; ventricular-evoked response increased in the upright position and decreased in the supine position. Furthermore, repolarization time and heart rate correlated inversely; higher heart rates resulted in a shortening of the ventricular-evoked response.

Keywords: Ventricular-evoked response; orthostasis; tilt-table test

Journal Article.  0 words. 

Subjects: Cardiovascular Medicine

Full text: subscription required

How to subscribe Recommend to my Librarian

Users without a subscription are not able to see the full content. Please, subscribe or login to access all content.