Clinical practice guidelines recommend > 3400 anti-factor Xa International Units of LMWH subcutaneous daily (equivalent to > 34 mg subcutaneous daily of enoxaparin). For most patients, continue prophylaxis until hospital discharge; however, in patients that are considered to be at high risk (., > 60 years of age or a history of VTE), continue prophylaxis through hospitalization and for 2—4 weeks after discharge. Previous guidelines have suggested a dose of enoxaparin 40 mg subcutaneous 1—2 hours before surgery then daily or 30 mg subcutaneous every 12 hours starting 8—12 hours before surgery.
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