CASE REPORT article
Front. Pediatr.
Sec. Pediatric Cardiology
Volume 13 - 2025 | doi: 10.3389/fped.2025.1591928
This article is part of the Research TopicAdvancements in Congenital Heart Disease: Diagnosis and Management InnovationsView all 3 articles
A Case Report of Delayed Persistent Third-Degree Atrioventricular Block 7 Years after Eccentric Umbrella Occlusion of a Perimembranous Ventricular Septal Defect in Infancy
Provisionally accepted
- First Affiliated Hospital, Guangxi Medical University, Nanning, China
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This article reports an 8-year-old female patient who underwent trans-thoracic small-incision interventional Pm-VSD occlusion with an eccentric umbrella (defect diameter 10 mm, occluder waist diameter 12 mm) at 4 months of age (July 2017). Seven years after the operation (October 2024), she gradually developed third-degree atrioventricular block. Despite the removal of the occluder and ventricular septal defect repair combined with steroid pulse therapy, the conduction abnormality persisted. This case, with a 7 -year disease course evolution, provides in -depth insights into the development process of delayed complete atrioventricular block (CAVB) following eccentric umbrella occlusion in infancy and early childhood, particularly for high -risk patients with occlusion adjacent to the conduction system. It also suggests the significance of electrocardiogram monitoring for over 5 years post -operation in such high -risk patients.
Keywords: Perimembranous ventricular septal defect, Trans-thoracic Occlusion, Eccentric Occluder, Delayed Atrioventricular Block, Device-related complications
Received: 11 Mar 2025; Accepted: 20 May 2025.
Copyright: © 2025 Wei, Zeng, Huang, Luo and Wu. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: Ji Wu, First Affiliated Hospital, Guangxi Medical University, Nanning, China
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