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Comparison between recommended and observed prophylaxis (n = 310). UFH 10000 = unfractionated heparin 5000 IU every 12 hours. UFH 15000 = unfractionated heparin 7500 IU every 12 hours or 5000 IU every 8 hours. Anti Xa = low molecular weight heparin 4000 IU anti Xa/day. Mechanical = graduated compression stockings or intermittent pneumatic compression devices. None = No prescription for mechanical or pharmacologic prophylaxis.
