심폐우회술 중 경식도 심장초음파를 통해 발견된 동맥관개존 - 증례 보고 -

Transesophageal echocardiography is a useful device to evaluate the posterior structure of heart with an advantage of enabling clearer images, as compared to transthoracic echocardiography. With in- traoperative transesophageal echocardiography, we can reconfirm pre-diagnosed lesions, determine the success of the operation, and in particular, diagnose new lesions that are undetected in pre-operative evaluation. In the present case, undiagnosed patent ductus arteriosus was found on intraoperative transesophageal echocardiography during cardiopulmonary bypass. Subsequently, the patent ductus arteriosus was ligated successfully. With transesophageal echo- cardiography, we can diagnose the structural and functional abnormality of heart unidentified in the pre-operative evaluation. Also, transesophageal echocardiography can play the role of a rescuer to solve the problems that occur during cardiopulmonary bypass.