RESUMEN
Objective To investigate the influence of sufentanial in postoperative patient controlled epidural analgesia(PCEA) in hemorheology after total hip replacement and its inhibitory effect on thrombosis.Methods Fifty patients,ASA Ⅰ-Ⅱ,undergone total hip replacement were randomly divided into PCEA group (n=25) and control group (n=25), and received continuous epidural anesthesia.After operation,5 mL 0.2% ropivacaine was administered in PCEA group,and then PCEA pump was used,analgesia liquid included 0.4 mg?L-1 sufentanial,0.2% ropivacaine and saline.Petidine was administered intramuscuarly according to pain in control group.VAS scores 1,12,24 and 48 h after operation and changes of various parameters of hemorheology at diffenent time after anesthesia were observed.Results ①The VAS scores 1,12,24,48 h after operation were lower than those in control group (P