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  • Title: Heparin-bonded cardiopulmonary bypass circuits reduce the rate of red blood cell transfusion during elective coronary artery bypass surgery.
    Author: Kreisler KR, Vance RA, Cruzzavala J, Mahnken JD.
    Journal: J Cardiothorac Vasc Anesth; 2005 Oct; 19(5):608-11. PubMed ID: 16202894.
    Abstract:
    OBJECTIVE: This study compared the transfusion rates of patients treated with heparin-bonded circuits with the transfusion rates of patients treated with standard bypass circuits with and without -aminocaproic acid (EACA). DESIGN: Prospective double-blind (drugs), open trial (cardiopulmonary bypass circuits). SETTING: University medical center. PARTICIPANTS: Seventy-one patients undergoing elective am admission coronary artery bypass graft surgery. MEASUREMENTS AND MAIN RESULTS: Patients were randomized to receive either heparin-coated cardiopulmonary bypass circuits (HBCPB), nonheparin-coated cardiopulmonary bypass circuits and EACA (EACPB), or nonheparin-coated bypass circuits and placebo (control). Patients were transfused if their hematocrit was <18% while on cardiopulmonary bypass or <25% at any time after the cardiopulmonary bypass period. The rate and number of transfused packed red blood cells (pRBCs), platelets, fresh frozen plasma, and cryoprecipitate were measured. A Fisher exact test showed that the transfusion rate was as follows: the HBCPB group (5.0%), the EACPB group (18.2%), and the control group (36%), (p = 0.034). CONCLUSIONS: The heparin-bonded cardiopulmonary bypass-treated patients in this study received fewer pRBCs than did the control group. A nonsignificant reduction in the pRBC transfusion rate was found between those with heparin-bonded bypass circuits and those with standard circuits who received epsilon-aminocaproic acid.
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