Cardiology
Original Paper
Progressive Atrioventricular Block after Total Correction of Fallot’s Tetralogy, Documented by Repeat Electrophysiological StudiesBolens M. · Friedli B.Department of Pediatrics and Genetics, University of Geneva, Switzerland
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Article / Publication Details
Received: February 21, 1982
Accepted: May 17, 1982
Published online: November 07, 2008
Issue release date: 1982
Number of Print Pages: 7
Number of Figures: 0
Number of Tables: 0
ISSN: 0008-6312 (Print)
eISSN: 1421-9751 (Online)
For additional information: https://www.karger.com/CRD
Abstract
A case of progressive trifascicular block late after correction of Fallot’s tetralogy is reported. Progressive damage to the His bundle and/or its branches over 18 months after surgery was suggested by sequential ECGs and confirmed by repeat electrophysiological studies done 3 and 18 months postoperatively: the H-V interval increased from 55 to 80 ms over this period. With atrial pacing at increasing rates, supra-His 2:1 atrioventricular (AV) block occurred at a rate of 158/min at the first study; at the second study, infra-His block occurred at an atrial pacing rate of only 128/min. A permanent pacemaker was implanted prophylactically. 5 years after surgery, complete heart block occurred without symptoms, the pacemaker having taken over ventricular stimulation.
© 1982 S. Karger AG, Basel
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Article / Publication Details
Received: February 21, 1982
Accepted: May 17, 1982
Published online: November 07, 2008
Issue release date: 1982
Number of Print Pages: 7
Number of Figures: 0
Number of Tables: 0
ISSN: 0008-6312 (Print)
eISSN: 1421-9751 (Online)
For additional information: https://www.karger.com/CRD
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