Etoricoxib for Routine Post-operative Pain Prophylaxis in Laparoscopic Surgery
Condition: Hysterectomy; Tubal Excision; Ovariectomy; Postoperative Pain
MeSH terms: Pain, Postoperative
Study type: Interventional
Phase: Phase 3

Summary: 
      The aim of this trial is to compare if a single dose of oral etoricoxib 120 mg will have
      equal post-operative analgesic efficacy as an optimal regiment of intravenous ketorolac 30 mg
      + 30 mg during the first 18 hours (+/- 1 hour) after gynaecologic laparoscopic surgical
      procedures, where the need for post-operative opioid is expected.
    

Detailed description: 
      Postoperative pain can contribute to reduce the patient well-being and, if it is pronounced,
      delay rehabilitation and increase the total cost for nursing and treatment.

      As quite extensive surgical procedures presently are being undertaken on an ambulatory basis
      the need for adequate post-operative pain prophylaxis is stressed. Pain and nausea/vomiting
      are the most frequent causes of delayed discharge or unanticipated admission to hospital stay
      after ambulatory surgery (1). As opioids for postoperative pain relief have a lot of unwanted
      side-effects (e.g. nausea, vomiting, sleepiness, obstipation, disturbed physiological sleep
      [2]), it has been shown beneficial, both in terms of cost-effectiveness and patient
      satisfaction, to reduce the need of opioids in post-operative setting by other means (i.e.
      non-opioid) methods of pain-relief. The concept of multimodal, non-opioid pain prophylaxis
      and treatment is being advocated as optimal after ambulatory surgery. The most important
      modes of non-opioid pain prophylaxis, at present, is paracetamol, non-steroidal
      anti-inflammatory drugs (NSAIDs) and local anaesthesia. The best result is achieved when
      these different modes are used together in a prophylactic manner; the need of rescue opioid
      analgesics may be reduced by 20-50% and in many cases diminish (3). It has been shown in many
      studies that the NSAID is an important component in routine post-operative pain prophylaxis,
      e.g. NSAID in combination with paracetamol provides better analgesic effect than paracetamol
      alone, and may be equianalgesic to a small-medium dose of opioid (2).

      There are four problems with NSAIDs when used for routine pain prophylaxis in ambulatory
      surgery/anaesthesia: increased bleeding tendency, gastrointestinal ulceration, renal failure
      and anaphylactic reactions (2-4).

      There are definite potential benefits with etoricoxib in ambulatory setting (5-7): Due to
      cox-II selectivity there is no concern of increased bleeding tendency; thus the drug can be
      given pre-operatively. It is a potent, oral coxib; thus cheaper and more simple than IV
      NSAIDs. It has a long duration of effect; thus the need of patient attention is reduced
      because the first dose lasts for 24 h and a single daily dose will be optimal further on.

      It has a lower potential of gastrointestinal ulceration, thus may be used in some patients
      where conventional NSAIDs may be contraindicated.

      It has so far not been shown to have harmful cardiovascular effects in prospective studies of
      continuous use for at least 12 months in patients with increased risk of cardiovascular
      complications (ref 8: Edge study).

      Study rationale: Etoricoxib has so far been compared with traditional oral NSAIDs and oral
      coxibs for postoperative pain prophylaxis. However, in many clinical situations the use of
      pre-operative conventional NSAIDs is not recommended due to the risk of preoperative
      bleeding. These patients are usually given IV ketorolac during the last part of the procedure
      as the most efficient alternative for post-operative pain prophylaxis.

      It will be of great interest to compare this practice with the use of oral etoricoxib given
      pre-operatively. If the analgesic quality of an adequate dose etoricoxib is comparable to a
      ketorolac regimen, the etoricoxib approach will have a lot of potential benefits: simple,
      cheap, earlier start of analgesia, more longlasting analgesia and less risk of postoperative
      bleeding and gastrointestinal ulcer. If successful, a single pre-operative dose of etoricoxib
      may be a routine measure in a majority of all ambulatory surgery patients.

      Hypotheses: A single dose pre-operative of oral etoricoxib 120 mg will have equal
      post-operative analgesic efficacy as an optimal regimen of IV ketorolac 30 mg + 30 mg during
      the first 18 h( +/- 1 h) after gynaecologic laparoscopic surgical procedure, where the need
      for post-operative opioid is expected.

      Bibliography:

        1. Chung F, Mezei G: Adverse outcomes in ambulatory anesthesia. Can. J Anaesth. 1999;
           46:R18-R34.

        2. Dahl V, Raeder JC: Non-opioid postoperative analgesia. Acta Anaesthesiol. Scand. 2000;
           44:1191-203.

        3. Dahl V, Raeder JC, Drosdal S, Wathne O, Brynildsrud J: Prophylactic oral ibuprofen or
           ibuprofen-codeine versus placebo for postoperative pain after primary hip arthroplasty.
           Acta Anaesthesiol. Scand. 1995; 39:323-6.

        4. Rawal N: Postoperative pain management in day surgery. Anaesthesia 1998; 53 Suppl. 2:
           50-2.

        5. Chang DJ, Desjardins PJ et al. The analgesic efficacy of etoricoxib compared with
           oxycodone/acetaminophen in an acute post-operative pain model. Anest. Analg. 2004; 99;
           807-15.

        6. Cochrane DJ, Jarvis B et al. Etoricoxib. Drugs 2003; 62:2637-51.

        7. Malmstrøm K, Sapre A et al. Etoricoxib in acute pain associated with dental surgery.
           Clin. Ther. 2004; 26:667-79.

        8. The EDGE study: MSD preliminary communication.
    

Intervention name(s): etoricoxib
Intervention type(s): Drug
Intervention MeSH terms: Etoricoxib
Allocation: Randomized
Intervention model: Single Group Assignment
Masking: Double
Primary purpose: Treatment
Keywords: Postoperative pain; Opioid; Etoricoxib; Ketorolac; Laparoscopic Surgery; Surgical Procedures, Gynecologic