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The Annals of Thoracic Surgery, Vol 50, 413-416, Copyright © 1990 by The Society of Thoracic Surgeons
H Suma and R Takanashi
Arteriosclerosis of the right gastroepiploic artery (GEA) and the internal
thoracic artery (ITA) were compared by pathological observation. Specimens
were obtained from 35 patients who underwent coronary artery bypass
grafting with simultaneous use of these two kinds of arterial grafts.
Degree of arteriosclerosis was classified in five categories: 0, normal; 1,
luminal narrowing less than 25%; 2, luminal narrowing between 25% and 50%;
3, luminal narrowing greater than 50%; and 4, overt atherosclerosis with
ulceration or calcification. The number of arteries with degree 0, 1, 2, 3,
and 4 was 16 (46%), 15 (43%), 3 (9%), 0, and 1 (3%) in GEA and 27 (77%), 8
(23%), 0, 0, and 0 in ITA, respectively. Incidence of degree 0 was higher
in ITA, but differences were not significant. The mean wall thickness was
0.30 +/- 0.13 mm in GEA and 0.21 +/- 0.07 mm in ITA (p less than 0.05). In
23 patients who underwent postoperative angiography, all 46 arterial grafts
were patent without focal stenosis. We conclude that GEA has slightly more
intimal thickening than ITA, but significant luminal narrowing caused by
arteriosclerosis is rare. Gastroepiploic artery can be expected to be a
suitable conduit for coronary artery bypass grafting.
ARTICLES
Arteriosclerosis of the gastroepiploic and internal thoracic arteries
Department of Cardiovascular Surgery, Mitsui Memorial Hospital, Tokyo, Japan.
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