Blood sampling by a chronic artificial external arteriovenous shunt in dogs.

Abstract

Chronic artificial external arteriovenous shunts have been generated in dogs. Useful duration of the preparation has extended up to 100 days. Shunting from a carotid artery to the opposite jugular is accomplished through silicone rubber tubing across the dorsum of the neck. A centra] slip joint permits insertion of various measuring devices. The shunt functions without routine flushing or the use of anticoagulants. A major care problem is prevention of infection at the skin exits. Shunt flow comprises 15-20% of the cardiac output. Cardiac disability has not been observed. Hematologic findings are normal.