Major bleeding with bivalirudin versus unfractionated heparin (UFH) in predominantly ST segment elevation myocardial infarction (STEMI) studies; (A) glycoprotein IIb/IIIa inhibitors (GPI) predominantly provisional in the bivalirudin arm versus planned use i... Major bleeding with bivalirudin versus unfractionated heparin (UFH) in predominantly ST segment elevation myocardial infarction (STEMI) studies; (A) glycoprotein IIb/IIIa inhibitors (GPI) predominantly provisional in the bivalirudin arm versus planned use in the heparin arm, and (B) provisional GPI use in both arms. Mohamed Farag et al. Open Heart 2015;2:e000258 ©2015 by British Cardiovascular Society