The probability of closure in aortocoronary vein bypass grafts

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Abstract
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 2-yr postoperative period. For patients with a single vein graft, there was a 23% chance of closure during the first 2-yr postoperative period. The chance that all grafts would close during this period for patients with 2 grafts was 5%, and it was 1% for patients with 3 grafts. The knowledge of these closure probabilities may be used by the surgeon when planning the optimal surgical maneuver.

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