EXPERIMENTAL-STUDY ON HEPATIC VASCULAR EXCLUSION WITH ATRIOPORTACAVALSHUNT IN DOGS

The main effects of hepatic vascular exclusion (HVE) on the body are h emodynamic changes and metabolic disorders. We developed a new techniq ue-atrioportacaval shunt (APCS) both to increase the blood-return volu me and to decompress the portal system and the inferior vena cava belo w the occlusion during HVE in canine. Experimental results showed that HVE-APCS is characteristic of simplicity and safety. During HVE-APCS central venous pressure (CVP), mean arterial pressure (MAP), mean pulm onary arterial pressure (MPAP), pulmonary capillary wedged pressure (P CWP) and pulmonary vascular resistance (PVR) remained almost stable wh ile cardiac output (CO) decreased by 34.5-45.6% and systemic vascular resistance (SVR) increased by 46.8-65.7%. The recirculation injury to ischemic liver was mild owing to concomitant decompression of the port al system. It may be concluded that HVE-APCS is an ideal method to con trol the bleeding from the major hepatic veins and retrohepatic vena c ava.