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December 6, 1976

The Probability of Closure in Aortocoronary Vein Bypass Grafts

Author Affiliations

From the Department of Preventive Medicine (Drs Rimm and Anderson) and Pharmacology (Dr Barboriak), The Medical College of Wisconsin, Milwaukee (Mr Blumlein); Research Service, Wood Veterans Administration Hospital (Dr Barboriak); and the Departments of Medicine (Dr Walker) and Surgery (Dr Johnson), St Luke's Hospital, Milwaukee.

JAMA. 1976;236(23):2637-2640. doi:10.1001/jama.1976.03270240033021

A study of 540 patients who had the aortocoronary vein bypass operation (from several transplant teams) showed that grafts within a patient closed independently of one another during the first two-year postoperative period. For patients with a single vein graft, there was a 23% chance of closure during the first two-year postoperative period. The chance that all grafts would close during this period for patients with two grafts was 5%, and it was 1% for patients with three grafts. The knowledge of these closure probabilities may be used by the surgeon when planning the optimal surgical maneuver.

(JAMA 236:2637-2640, 1976)