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Static magnetic therapy does not decrease pain or opioid requirements: a randomized double-blind trial.

M Soledad Cepeda1, Daniel B Carr, Tony Sarquis

  • 1Department of Anesthesia, San Ignacio Hospital, Bogota, Colombia. scepeda@tufts-nemc.org

Anesthesia and Analgesia
|January 24, 2007
PubMed
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Magnetic therapy does not effectively relieve acute postoperative pain or reduce opioid needs. This study found no significant difference in pain intensity or morphine requirements between magnetic and sham therapy groups.

Area of Science:

  • Anesthesiology
  • Pain Management
  • Complementary and Alternative Medicine

Background:

  • A significant market exists for magnetic therapy products claiming pain relief, despite limited scientific evidence.
  • The efficacy of magnetic therapy for managing acute pain, particularly postoperative pain, remains largely unproven.

Purpose of the Study:

  • To evaluate the effectiveness of static magnets in reducing pain intensity in patients experiencing acute postoperative pain.
  • To determine if magnetic therapy influences the requirement for opioid analgesics in the postoperative setting.

Main Methods:

  • A randomized, double-blind, controlled trial was conducted with 165 patients over 12 years of age.
  • Participants were assigned to receive either a magnetic device or a sham device placed on the surgical incision.

Related Experiment Videos

  • Pain intensity was assessed using a 0-10 scale, and opioid (morphine) administration was titrated to patient-reported pain levels.

    • Main Results:

    • No statistically significant difference in pain intensity was observed between the magnetic therapy group and the sham therapy group (mean difference: 0.04 units).
    • Opioid requirements were similar between the two groups, with the magnetic group requiring slightly more morphine on average (1.5 mg difference).
    • Confidence intervals for both pain intensity and opioid requirements indicate no meaningful clinical difference between treatments.

    Conclusions:

    • Static magnetic therapy demonstrates no efficacy in controlling acute postoperative pain intensity.
    • Magnetic therapy does not reduce the need for opioid analgesics in patients recovering from surgery.
    • Based on these findings, magnetic therapy should not be recommended for managing acute postoperative pain.