Institute of Cardiology, University of Rome "La Sapienza," Rome, Italy;Institute of Anesthesiology, University of Rome "La Sapienza," Rome, Italy
Abstract:
We describe a patient who developed cardiac tamponade during electrophysiological mapping aimed at ablating an atrioventricular accessory pathway. Transesophageal echocardiography showed compression of the left pulmonary veins due to pneumohemomediastinum secondary to left subclavian vein cannulation.