Bivalirudin

 Use as an anticoagulant in patients with unstable angina undergoing percutaneous transluminal coronary angioplasty .Bivalirudin is a synthetic 20 residue peptide (thrombin inhibitor) which reversibly inhibits thrombin. Once bound to the active site, thrombin cannot activate fibrinogen into fibrin, the crucial step in the formation of thrombus. It is administered intravenously. Because it can cause blood stagnation, it is important to monitor changes in hematocrit, activated partial thromboplastin time, international normalized ratio and blood pressure.