[Intraoperative management for a patient with heparin-induced

Masui · Jan 2002

Case Reports

[Intraoperative management for a patient with heparin-induced thrombocytopenia (HIT) undergoing off-pump coronary bypass surgery using argatroban, a direct thrombin inhibitor].

HIT type II is one of the severe complications of heparin therapy. The antibody for the heparin-PF 4 complex, which causes thrombocytopenia of less than 100 x 10(3).microliter-1, thrombosis and DIC-like symptoms, is produced. We managed the patient with HIT type II, who underwent off-pump CABG using argatroban, a direct thrombin inhibitor, as an anticoagulant. ⋯ We also investigated the platelet count in the 100 patients with heparin therapy in CCU. The incidence of the platelet depression after heparin administration was as high as 59%, and in 12% of the patients the platelet count dropped below 100 x 10(3).microliter-1. In conclusion, thrombocytopenia by heparin therapy is not rare, and argatroban as an anticoagulant during off-pump CABG is thought to be useful.

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- Hiromi Ohno and Masakazu Yokoi.
- Department of Anesthesiology, Saiseikai Yokohama-shi Nambu Hospital, Yokohama 234-0054.
- Masui. 2002 Jan 1; 51 (1): 30-3.
AbstractHIT type II is one of the severe complications of heparin therapy. The antibody for the heparin-PF 4 complex, which causes thrombocytopenia of less than 100 x 10(3).microliter-1, thrombosis and DIC-like symptoms, is produced. We managed the patient with HIT type II, who underwent off-pump CABG using argatroban, a direct thrombin inhibitor, as an anticoagulant. Intraoperative activated coagulation time (ACT) was maintained above 250 sec with 5.0 micrograms.kg-1.min-1 of argatroban infusion and all the procedures were successful. We also investigated the platelet count in the 100 patients with heparin therapy in CCU. The incidence of the platelet depression after heparin administration was as high as 59%, and in 12% of the patients the platelet count dropped below 100 x 10(3).microliter-1. In conclusion, thrombocytopenia by heparin therapy is not rare, and argatroban as an anticoagulant during off-pump CABG is thought to be useful.

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[Intraoperative management for a patient with heparin-induced thrombocytopenia (HIT) undergoing off-pump coronary bypass surgery using argatroban, a direct thrombin inhibitor].

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