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Updated: Jul 13, 2026

Cox-Maze IV Procedure Concomitant with Valvular Surgery In Situs Inversus Dextrocardia: A Single-Center Experience in China
Published on: February 11, 2022
Combined mitral valve repair, LVOT myectomy and left atrial cryoablation therapy
U T Opfermann1, N Doll, T Walther
1Department of Cardiac Surgery, Heartcenter Leipzig GmbH, University of Leipzig, Strümpellstrasse 39, 04289 Leipzig, Germany.
Abstract:
Asymmetric septal hypertrophy (ASH) is a common cause of left ventricular (LV) outflow tract obstruction. Mitral valve (MV) regurgitation is present in 30% of those patients as well as biatrial enlargement. Furthermore, paroxysmal or chronic atrial fibrillation (AF) occurs in up to 22%. Two male patients were admitted for shortness of breath and decreased physical ability. Hypertrophic obstructive cardiomyopathy (HOCM) with ASH, severe MV regurgitation and chronic AF were diagnosed in both patients; present for 8 years in patient 1 and 1 year in patient 2. Both received MV annuloplasty, transaortic septal resection using the modified Morrow et al.'s technique and left atrial cryoablation therapy via median sternotomy. Intraoperative measurement revealed no residual gradients and competent MV, furthermore, both patients were discharged in sinus rhythm.
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