<prompt> Which of the following is a low molecular weight heparin:HirudinEnoxaparinTranexamic acidLepirudin  <response>: Ans. b Enoxaparin Enoxaparin is a low molecular weight heparin. It acts by inhibiting factor Xa. LMWH usually doesnt need monitoring because of consistent bioavailability. Drugs under LMWH: Enoxaparin Dalteparin Tinzaparin RabiparinAlso Know Hirudin along with Lepirudin and Bivalirudin is an anticoagulant which is act by direct thrombin factor IIa inhibition. Tranexamic acid is an anti-fibrinolytic agent. 