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)
Rimm AA, Blumlein S, Barboriak JJ, Anderson AJ, Walker JA, Johnson WD. The Probability of Closure in Aortocoronary Vein Bypass Grafts. JAMA. 1976;236(23):2637–2640. doi:10.1001/jama.1976.03270240033021
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