5Eagle KA,Berger PB,Calkins H,et al. ACC/AHA guidelines update for perioperative cardiovascular evaluation for noncardiac surgery-executive summargy[ J]. J Am Coll cardiol,2002 ,39 :542 ～553.
6Shaoeb MD, Watson BN, Atkinson RE, bleeding complication with enoxaparin for deep venous thrombosis prophylaxis. [ J ]. J Arthroplasty, 1999,14 (4) :432 ～ 438.
7Buck walter KC, Fan RN, Buckwalter JA, Seeing older perioperative patients in 3-D: when your patient is demented, delirium, or depressed [J]. Operative Techniques in Orthopaedics,2002,12 (2): 64 ～ 71.
