Clinical research for dose effects of ketorolac tromethamine on PCIA after hip arthroplasty

Abstract To observe effect and safety of different doses of ketorolac tromethamine in patient controlled intravenous analgesia (PCIA) after hip arthroplasty. 60 hip arthroplasty patients injected with 0.5 mg/kg ketorolac tromethamine before anesthesia were randomly divided into group A, B and C in which the patients were injected 2, 3 and 4 mg/kg ketorolac tromethamine after operation respectively. Compared with group A, MAP and HR in group B and group C were lower at T1 (3 h after operation) and T2 (6 h after operation). In group A, MAP and HR at T3 (24 h after operation) and T4 (48 h after operation) were lower than at T1. Compared with group A, NRS scores of group B and C were significantly lower during the analgesia. Compared with group A, ramesay sedation scores in group B and group C were significantly higher at T1 and T2; Harris hip scores of group B and group C were significantly higher at T3 and T4; the total number of pushing PCA pump and dezocine dosage were significantly decreased in group B and group C. Preemptive analgesia combined with postoperative analgesia on patients after hip replacement was appropriate.