ALB and Hypoalbuminemia: They designed anticoagulation prophylaxis regimens for patients according to the serum albumin: patients presenting with serum albumin levels <2.0 g/dl received LMWH by subcutaneous injections (enoxaparin, 20 mg once daily or equivalent formulation); patients with hypoalbuminemia <2.0 g/dl for >3 months were considered for a switch to low-dose warfarin, targeting to an INR of 1.5–2.5; patients in whom albumin level improved to 2.0–3.0 g/dl were switched to aspirin with 75 mg daily.