Changes in ventricular depolarization in patients in sinus rhythm following closure of ventricular septal defect associated with atrioventricular discordance

The Thoracic and Cardiovascular Surgeon
R C CastagnaF J Macartney

Abstract

Closing the ventricular septal defect in patients with atrioventricular discordance with sutures placed through the defect onto the morphologically right septal surface should avoid production of complete heart block. To discover whether this procedure otherwise affects conduction, standard electrocardiogram (ECG) were compared preoperatively and postoperatively in 11 such patients. Operation had lengthened the PR interval in one and shortened it in another. The QRS interval remained unchanged in 5 patients thought 2 of these showed minor changes in QRS configuration. Four patients showed QRS prolongation (increase greater than 20 msec) with delayed conduction towards the right ventricle and the initial QRS vector preserved, i.e., morphologically right bundle branch block. Two patients showed QRS prolongation with initial QRS vector alteration and delayed conduction towards the left ventricle, i.e., morphologically left bundle branch block. Repair through the morphologically left ventricle invariably caused bundle branch block. Repair through a right atriotomy caused bundle branch block in only 3 of 8 patients. Therefore closure of a ventricular septal defect by this method, particularly transatrially, need not affect conductio...Continue Reading

Citations

Jun 1, 1980·Annals of Surgery·C MarcellettiR B Wallace
May 1, 1984·British Heart Journal·A T de AlbuquerqueE A Shinebourne
Jun 8, 2012·Annals of Thoracic and Cardiovascular Surgery : Official Journal of the Association of Thoracic and Cardiovascular Surgeons of Asia·Hiroaki TakahashiChikashi Shimazu
Jan 28, 2010·The Annals of Thoracic Surgery·Hong-Gook LimJae Gun Kwak
Apr 9, 2008·Seminars in Thoracic and Cardiovascular Surgery. Pediatric Cardiac Surgery Annual·William J BrawnDavid W Quinn
Jun 1, 2001·The Journal of Thoracic and Cardiovascular Surgery·M JahangiriM R de Leval
Oct 1, 1983·British Heart Journal·J F SmallhornF J Macartney

❮ Previous
Next ❯

Related Concepts

Related Feeds

Cardiac Conduction System

The cardiac conduction system is a specialized tract of myocardial cells responsible for maintaining normal cardiac rhythm. Discover the latest research on the cardiac conduction system here.

Related Papers

Journal of Psychosomatic Research
Myles S FaithMarie A Jorge
Bundesgesundheitsblatt, Gesundheitsforschung, Gesundheitsschutz
G B M MensinkE Bergmann
Obesity Reviews : an Official Journal of the International Association for the Study of Obesity
Peter G Kopelman
© 2021 Meta ULC. All rights reserved