Sex Differences in Major Bleeding With Glycoprotein IIb/IIIa Inhibitors

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Abstract
Background— Glycoprotein (GP) IIb/IIIa inhibitors are beneficial in patients with non–ST-segment elevation acute coronary syndromes (NSTE ACS); their safe use in women, however, remains a concern. The contribution of dosing to the observed sex-related differences in bleeding is unknown. Methods and Results— We explored the relationship between patient sex, GP IIb/IIIa inhibitor use, dose, and bleeding in 32 601 patients with NSTE ACS across 400 CRUSADE (Can Rapid risk stratification of Unstable angina patients Suppress ADverse outcomes with Early implementation of the ACC/AHA guidelines) hospitals, of whom 18 436 were treated. GP IIb/IIIa inhibitor dose was defined as excessive if not reduced when creatinine clearance was <50 mL/min for eptifibatide or <30 mL/min for tirofiban. Major bleeding was defined as a hematocrit drop ≥0.12, need for transfusion, or intracranial bleeding. Major bleeding was adjusted for clinical factors and antithrombotic dose. The risk for bleeding attributable to excess GP IIb/II...

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