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AbstractNinety-two gastroepiploic artery (GEA) and 322 internal thoracic artery(ITA) grafts which underwent postoperative angiography (0.5-24postoperative months, mean 2.0 months) were compared. The sites of GEAanastomosis were 5 left anterior descending, 3 diagonal, 16 circumflex and68 right coronary arteries and for ITA grafts, 241 left anteriordescending, 40 diagonal, 36 circumflex and 5 right coronary arteries.Patency rates were 96% (88/92) of GEA and 98% (314/322) of ITA,respectively. No focal stenosis in the graft trunk was found in both GEAand ITA except occasional spasm in GEA. Six (6%) GEAs were opacified viathe superior mesenteric artery. Mean diameter of grafts just proximal tothe anastomosis measured by angiogram was 2.3 mm in GEA and 1.9 mm in ITA(P less than 0.01). Free flow after intraluminal papaverine injection was90.6 ml/min (50-300 ml/min) in 48 GEAs and 81.3 ml/min (50-150 ml/min) in98 ITAs. Histology showed normal to mild intimal sclerotic changes in 58 of63 (92%) GEAs and in 94 of 95 (99%) ITAs. From these results, we concludedthat GEA is a suitable conduit and good long term patency similar to ITAgrafting can be expected in coronary artery bypass grafting.
European Journal of Cardio-Thoracic Surgery – Oxford University Press
Published: May 1, 1991
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