• Keiichi Ishida, Mizuho Imamaki, Atsushi Ishida, Hitoshi Shimura, and Masaru Miyazaki.
• Department of General Surgery, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-0856, Japan.
• Surg. Today. 2004 Jan 1;34(12):1041-3.

AbstractA 79-year-old man was transferred to our hospital with severe chest pain and a suspected diagnosis of acute myocardial infarction. Emergency cardiac catheterization showed triple-vessel coronary artery disease, and we performed coronary artery bypass grafting under cardiopulmonary bypass (CPB). Continuous hemodiafiltration was started for acute renal failure postoperatively, and heparin was given as an anticoagulanting agent. By 9 days after the initiation of heparin therapy, his platelet count had fallen and a deep vein thrombosis had formed in his left leg. We suspected heparin-induced thrombocytopenia (HIT), and immediately discontinued the heparin, implementing danaparoid (Orgaran) instead, following which the platelet count recovered. Heparin-induced thrombocytopenia, which causes thrombosis, is a serious side effect of heparin therapy and few cases of HIT associated with CPB surgery have been reported in Japan.

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