Angiographic data and findings at operation in 118 diabetics undergoin
g coronary artery bypass graft have been compared with those from 98 n
on-diabetic patients matched for sex and age. Atherosclerosis in the e
picardial arteries in diabetics is more severe than in the general pop
ulation. Saphenous vein grafting and internal mammary artery anastomos
es are hampered by the fragility, irregularity, calcification and thic
kening as well as extensive atherosclerotic plaques in diabetic vessel
s. However, post-operative mortality and morbidity are no higher in di
abetics and the length of hospitalisation is comparable with those of
non-diabetics undergoing these procedures.