Successful treatment in a patient with sudden cardiac arrest due to anomalous left coronary artery arising from pulmonary artery.

To enhance the understanding of the left coronary artery originating from the pulmonary artery, we report a case of sudden cardiac arrest during exercise. After successful cardiopulmonary resuscitation, the patient underwent echocardiography and selective coronary angiography, and the disease was firmly diagnosed. Consequently, a thoracic surgery was performed. During the operation, the left coronary artery was transplanted to the root of the aorta and the pulmonary valve and artery were reconstructed. Finally, the surgery was successful.