Anti-Xa Levels in Critically Ill Patients Receiving Dalteparin for Thromboprophylaxis.

Abstract Rationale: Despite the efficacy and safety of low molecular weight heparin (LWMH) compared to unfractionated (UFH) in many patients, LMWH may bioaccumulate in patients with renal insufficiency which could cause an increased risk of bleeding. If LMWH thromboprophylaxis is safe in ICU patients with renal insufficiency, this could reduce the risk of DVT and HIT. Since the extent to which LMWH bioaccumulates in critically …