Severe Regurgitation of the Left Atrioventricular Valve Associated With Corrected Transposition of the Great Arteries Treated by Valve Replacement

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A 45-year-old woman was admitted to our hospital because of exertional dyspnea. At the age of 26, she was diagnosed with corrected transposition of the great arteries (CTGA) and mild left atrioventricular valve (LAVV) regurgitation. On admission, transthoracic echocardiography revealed severe LAVV regurgitation related to CTGA. The appropriate timing of LAVV replacement in CTGA patients remains unclear. In this case, severe LAVV regurgitation was demonstrated; the anatomic right ventricle had gradually enlarged; systolic function of the anatomic right ventricle was slightly reduced; and sinus rhythm was still maintained, so we opted for valve replacement.