CLINICAL EVALUATION OF LEFT HEART BYPASS USING A CENTRIFUGAL PUMP IN THE SURGICAL TREATMENT FOR THORACIC DESCENDING AORTA

Abstract

We have employed left heart bypass (LHB) using a centrifugal pump for twenty-six patients with thoracic descending aortic operation. Types of aneurysms were descending thoracic aneurysm in 13 patients, dissecting aneurysm (DeBakey type III) in 11 patients and both in 2 patients. Operative method was graft replacement in 25 patients and closure of entry in 1 patients. During LHB, mean pulmonary aortic pressure was controlled to maintain from 15 to 20mmHg. Three patients perioperatively occurred temporally ventricular tachycardia or fibrillation, two patients occurred the temporally elevation of ST segment in a ECG monitor. The rectal temperature of these patients was the tendency of low. Maintenance of body temperature needs to provide cardiac complications. In addition, the insertion of cannula from pulmonary vein was effective to avoid bleeding.