Journal Article

11. Cardiac Resynchronization Therapy: Different Issues

R. Sadowski, B. Ismer, T. Körber, G.H. von Knorre, W. Voß and C.A. Nienaber

in EP Europace

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

Volume 7, issue s3, pages S17-S18
Published in print October 2005 | ISSN: 1099-5129
Published online October 2005 | e-ISSN: 1532-2092 | DOI:
11. Cardiac Resynchronization Therapy: Different Issues

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AV delay (AVD) can be approximated to be either about 45ms or 70ms longer than individual interatrial conduction intervals in biventricular or right ventricular pacing, resp. Biotronik ICS3000 programmer enables filtered esophageal left atrial electrogram (LAE). It can be used irrespective of pacemakers make and model to measure interatrial conduction intervals (IACT) in order to simplify AVD optimization.


To test the ICS3000 based LAE in biventricular pacing.


In 13 congestive heart failure (CHF) patients, we compared results of individual echo AVD optimization with 1) factory settings and 2) results of simplified AVD approximation by individual IACT measurement using the ICS3000. AVDs were considered to be optimal if they differed less than 30ms compared to echo results:


1) ICS3000 can be used to simplify AVD optimization in every DDD paced CHF patient. Results are 2) similar to echo AVD optimization in more than half of the patients and 3) considerably superior to factory settings.

Journal Article.  0 words.  Illustrated.

Subjects: Cardiovascular Medicine

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