• J. Thromb. Thrombolysis · Jul 2012

    Randomized Controlled Trial Multicenter Study Comparative Study

    Bleeding-associated outcomes with preoperative clopidogrel use in on- and off-pump coronary artery bypass.

    • Jeffrey S Berger, Peter M Herout, Qing Harshaw, Steven R Steinhubl, Carla B Frye, and Richard C Becker.
    • New York University School of Medicine, 530 First Avenue, Skirball 9R, New York, NY 10016, USA. jeffrey.berger@nyumc.org
    • J. Thromb. Thrombolysis. 2012 Jul 1; 34 (1): 56-64.

    AbstractClopidogrel use prior to coronary artery bypass graft surgery in patients presenting with acute coronary syndromes is associated with a greater incidence of procedural related morbidity. We studied the impact of clopidogrel pre-treatment in patients undergoing off-pump versus on-pump coronary revascularization. This report describes a post hoc analysis of 431 on-pump and 165 off-pump cases from a retrospective multicenter study of the impact of preoperative (within 5 days) clopidogrel use on bleeding related outcomes and surgical reintervention. Logistic regression was used to analyze the outcomes with respect to surgery type and clopidogrel exposure while using a propensity score risk adjustment for off-pump surgery. The hospital length of stay (9.3 ± 5.4 days vs. 8.9 ± 5.3 days, p = 0.35), major bleeding (21% vs. 20%, p = 0.74) and reoperation (3.7% vs. 4.8%, p = 0.53) were similar between on-pump and off-pump, respectively. In both surgical cohorts, recent clopidogrel use was associated with a greater incidence of major bleeding, reoperation, and transfusion. After multivariable adjustment, the odds ratio of major bleeding (1.76, 95% confidence interval 0.88-3.52 on-pump; 2.37, 95% confidence interval 1.06-5.30 off-pump) and reoperation (4.52, 95% confidence interval 0.58-36.6 in on-pump; 7.05, 95% confidence interval 0.82-60.5 in off-pump) was increased in clopidogrel-treated patients compared to no clopidogrel. Major bleeding and reoperation did not differ significantly between patients undergoing on- or off-pump surgery. Clopidogrel treatment within 5 days prior to surgery increased the risk of bleeding and reoperation in all CABG patients irrespective of whether surgery was performed on- or off-pump.

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