title: Spasm of saphenous veins used as conduits for aortocoronary bypass grafting.
mesh_terms: D001026:Coronary Artery Bypass; D006801:Humans; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000209:etiology*; D012501:Saphenous Vein / Q000473:pathology / Q000637:transplantation*; D013035:Spasm / Q000209:etiology*