Unravelling early sinus node dysfunction after paediatric cardiac surgery: a pre-existing arrhythmogenic substrate

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Abstract

Early postoperative sinus node dysfunction (SND) is common in paediatric patients undergoing surgical correction of congenital heart disease (CHD). At present, the pathophysiology of these arrhythmias is incompletely understood. In this case series, we present 3 paediatric patients in whom we performed intraoperative epicardial mapping and who developed early postoperative SND. All patients had either an inferior or multiple sinoatrial node (SAN) exit sites, in addition to extensive conduction disorders at superior and inferior right atrium. Our findings contribute to the hypothesis that pre-existing alterations in SAN exit sites in combination with atrial conduction disorders may predispose paediatric patients with CHD for early postoperative SND. Such insights into the development of arrhythmias are crucial as it may be the first step in identifying high-risk patients.

Original languageEnglish
Article numberivac262
JournalInteractive Cardiovascular and Thoracic Surgery
Volume36
Issue number1
Early online date2 Nov 2022
DOIs
Publication statusPublished - 1 Jan 2023

Bibliographical note

Publisher Copyright:
© 2022 The Author(s). Published by Oxford University Press on behalf of the European Association for Cardio-Thoracic Surgery.

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