Peripheral Vascular Resistance on Postoperative Hepatic and Renal Function in Surgery of Thoracic Aneurysms

Abstract

We are presently using pulmonary artery drainage in partial cardiopulmonary bypass for operations of thoracic aneurysms. We have employed this method in 21 operative cases. The peripheral vascular resistance ratio (δR) can be represented by the equation δR=(0.0104t-0.022)²+1.(t) is the aortic cross clamp time. The postoperative BUN, GOT and GPT showed a positive correlation to the aortic cross clamp time. A positive correlation was also seen between δR and BUN, GOT, GPT. In partial cardiopulmonary bypass, the peripheral vasclar resistance increases proportionaly to the aortic cross clamp time, and possibly is one of the factors contributing to organ damage.