Related Experiment Video
Updated: Jun 10, 2026

Cox-Maze IV Procedure Concomitant with Valvular Surgery In Situs Inversus Dextrocardia: A Single-Center Experience in China
Published on: February 11, 2022
Mitral isthmus block in a case of persistent left superior vena cava
Shinsuke Miyazaki1, Nicolas Derval, Ashok Shah
1Hôpital Cardiologique du Haut-Lévêque and Université Victor Segalen Bordeaux II, Bordeaux-Pessac, France. mshinsuke@k3.dion.ne.jp
Abstract:
Persistent left superior vena cava (LSVC), an uncommon venous anomaly, could be an arrhythmogenic source of atrial fibrillation. Multiple electrical connections were reported between the LSVC and the left atrium, which may negatively impact the achievement of conduction block during linear ablation of left mitral isthmus. We describe a case with perimitral atrial flutter (AFL) in a patient with isolated LSVC. AFL was successfully treated and complete perimitral conduction block was achieved following a lengthy epicardial radiofrequency application.
Related Concept Videos
Mitral Stenosis I: Introduction
Mitral Stenosis II: Clinical features and Diagnostic Tests
Mitral Regurgitation I: Introduction
Mitral Stenosis III: Medical Management
Mitral Regurgitation III: Medical Management
Mitral Valve Prolapse II: Assessment and Management

