Heparin , warfarin , aspirin , clopidogrel , and ticagrelor can be used safely with renal impairment without dose adjusting .
Enoxaparin and fondaparinux can not be used with e GFR <15 . Half dose of enoxaparin with stage 4 CKD .
Avoid dabigatran and rivaroxaban with significant renal impairment ( e GFR below 30 ) .Give warfarin safely ,instead .
Dabigatran is Dialysable .Rivaroxaban is not .