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

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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.