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Dexamethasone before total laparoscopic hysterectomy: a randomized controlled dose-response study.

Chitra Rajeswari Thangaswamy1, Vimi Rewari, Anjan Trikha

  • 1Department of Anaesthesiology and Intensive Care, All India Institute of Medical Sciences, Ansari Nagar, New Delhi, 110029, India.

Journal of Anesthesia
|January 7, 2010
PubMed
Summary

A single preoperative dose of 8 mg dexamethasone effectively reduced postoperative pain and nausea in patients undergoing total laparoscopic hysterectomy (TLH). This enhanced recovery strategy significantly lowered analgesic needs and postoperative nausea and vomiting (PONV).

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Area of Science:

  • Anesthesiology and Perioperative Medicine
  • Surgical Oncology
  • Pharmacology

Background:

  • Postoperative pain and nausea and vomiting (PONV) are common complications following total laparoscopic hysterectomy (TLH).
  • Effective pain management and PONV prophylaxis are crucial for patient recovery and satisfaction after gynecological surgery.

Purpose of the Study:

  • To evaluate the efficacy of a single preoperative dose of dexamethasone, in varying dosages, for postoperative analgesia in patients undergoing TLH.
  • To compare the effects of 4 mg and 8 mg of dexamethasone against a placebo in managing pain and PONV.

Main Methods:

  • A prospective, randomized, double-blind, placebo-controlled study involving 55 patients undergoing TLH.
  • Patients were allocated to three groups: placebo, 4 mg dexamethasone (D4), and 8 mg dexamethasone (D8), receiving the intervention intravenously 2 hours before induction.

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  • Outcomes measured included time to first analgesic requirement, total postoperative fentanyl consumption, and incidence of PONV.

    • Main Results:

    • The 8 mg dexamethasone group (D8) showed a significantly delayed time to first analgesic requirement compared to both the 4 mg group (D4) and placebo (P = 0.01).
    • Total postoperative fentanyl consumption was significantly reduced in the D8 group versus D4 and placebo groups (P = 0.01), with an average decrease of 99.3 mcg in 24-hour consumption.
    • PONV incidence was significantly lower in the D8 group, with a 36.8% complete response rate compared to 100% PONV in the placebo group. No adverse effects were reported.

    Conclusions:

    • A single preoperative intravenous dose of 8 mg dexamethasone, administered 2 hours before induction, is effective in delaying the need for analgesia.
    • This dosage significantly reduces total fentanyl consumption and the incidence of postoperative nausea and vomiting (PONV) in patients undergoing TLH.
    • Dexamethasone at 8 mg represents a safe and effective strategy for improving postoperative outcomes in TLH patients.