[Introduction of intra-aortic balloon pumping catheter through left subclavian artery guided by trans-esophageal echocardiography].

It is very difficult to insert an intra-aortic balloon pumping catheter into the descending aorta through the subclavian artery by the blind technique. But the technique with the guidance by trans-esophageal echocardiography to introduce the balloon into the descending aorta was simple and useful.