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Propacetamol versus ketorolac for treatment of acute postoperative pain after total hip or knee replacement.

Abstract
We assessed the analgesic efficacy of IV propacetamol and ketorolac in a double-blinded, placebo-controlled study involving patients undergoing total hip or knee replacement procedures. On the first morning after major joint replacement surgery, 164 patients experiencing moderate-to-severe pain were randomly assigned to receive an IV infusion of propacetamol (2 g), ketorolac (15 or 30 mg), or placebo (saline). Patient-controlled analgesia with morphine was made available as a "rescue" analgesic on patient's request during the 6-h postdosing evaluation period. The median time to onset of analgesia with propacetamol (8 [95% confidence interval 6,10] min) was shorter than ketorolac 15 mg (14 [7,16] min), and placebo (16 [8; not estimable] min) although the differences did not reach statistical significance. However, compared with ketorolac 30 mg, propacetamol had a shorter duration of analgesia (3.5 [2;5.4] vs 6 [3.3; not estimable] h). Analysis of pain intensity and pain relief scores demonstrated that propacetamol produced a significantly greater improvement in pain relief than saline from 45 min until 5 h after the injection. Propacetamol was not significantly different from ketorolac 15 mg and 30 mg with respect to the main analgesic efficacy variables during the 6-h assessment period. The most frequently reported adverse event with propacetamol was injection site pain (28% vs 19% for ketorolac 15 mg, 29% for ketorolac 30 mg, and 10% for placebo, respectively). In conclusion, propacetamol (2 g IV) possesses a similar analgesic efficacy to ketorolac (15 or 30 mg IV) after total hip or knee replacement surgery.
AuthorsT J Zhou, J Tang, P F White
JournalAnesthesia and analgesia (Anesth Analg) Vol. 92 Issue 6 Pg. 1569-75 (Jun 2001) ISSN: 0003-2999 [Print] United States
PMID11375848 (Publication Type: Clinical Trial, Comparative Study, Journal Article, Randomized Controlled Trial, Research Support, Non-U.S. Gov't)
Chemical References
  • Analgesics, Non-Narcotic
  • Acetaminophen
  • propacetamol
  • Ketorolac
Topics
  • Acetaminophen (analogs & derivatives, therapeutic use)
  • Aged
  • Analgesia, Patient-Controlled
  • Analgesics, Non-Narcotic (therapeutic use)
  • Arthroplasty, Replacement, Hip
  • Arthroplasty, Replacement, Knee
  • Female
  • Humans
  • Ketorolac (therapeutic use)
  • Male
  • Middle Aged
  • Pain Measurement (drug effects)
  • Pain, Postoperative (drug therapy)
  • Time Factors

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