Use of the left internal thoracic artery to correct a left main coronary atresia.

Dyspnea with a slightly enlarged heart was noticed in a five year old girl at a checkup. The cardiological investigation revealed an enlarged left ventricle with slight mitral regurgitation. The right coronary artery was enlarged and filled the entire left arterial system via collaterals. The left main coronary artery could not be detected. In addition, outflow of contrast medium into the large vessels was absent. With the diagnosis of left main coronary atresia, the left internal thoracic artery was implanted on to the proximal left anterior descendent in October 1985. In the control angiogram, the anastomosis conditions were normal, the left ventricle had decreased in size and contracted almost normally. The collaterals from the right could no longer be demonstrated. The child (now six years old) has full exercise tolerance today. In the ultrasonogram, the ventricle shows normal contraction behavior. Up to know, four cases with congenital main coronary atresia have been reported in the literature.