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CompletedNCT00104533Updated Mar 20, 2008

Effectiveness of Magnetic Therapy on Pain Intensity

A Phase 3 interventional study of Magnets in Postoperative Pain, sponsored by Javeriana University. Completed at 1 site in Colombia. Open to participants aged 8 Years and older. Per ClinicalTrials.gov, last updated 2008-03-20.

Sponsored by Javeriana University · Phase 3, Interventional, and Treatment

Phase
Phase 3
Study type
Interventional
Enrollment
164
Allocation
Randomized
Ages
8 Years and older
Sex
All
01

Study summary

Static magnetic therapy is increasingly used to alleviate pain; however, its efficacy has not been determined yet.

The aims of this proposal are to evaluate the effect of magnetic therapy on pain intensity levels, opioid requirements, and opioid side effects.

Read the detailed description

Static magnetic therapy is increasingly used to alleviate pain; however, its efficacy has not been determined yet. The aims of this proposal are to evaluate the effect of magnetic therapy on pain intensity levels, opioid requirements, and opioid side effects.

A randomized, double blind, controlled trial is proposed. Patients from 8 years old and older subjected to a variety of surgical procedures with pain of intensity at least 5/10 will be randomized into two groups: Magnetic therapy or Placebo.

The devices will be placed around the surgical wound for 2 hours. Every ten minutes, patients will rate their pain intensity on a 0-10 numerical rating scale, and morphine will be administered until pain intensity is ≤ 4/10. Pain intensity will be the primary outcome. Opioid requirements and opioid side effects will be secondary outcomes.

To detect a difference of 1 unit (from 0 to 10) between the groups with 80% power, assuming that the baseline pain intensity is 7.9 ± 2.0, we estimated the need for 70 patients per group.

We will use an intention-to-treat analysis. To analyze the effect of the treatment on pain intensity, an analysis of repeated measures using generalized estimating equations will be used. The proportion of subjects in each group who exhibit 50% or more pain relief one hour after application of the magnetic devices and the number needed to treat will also be calculated. To analyze the effect of the treatment on opioid requirements, a difference in morphine requirements between groups two hours after placement of the magnets will be estimated. To analyze the effect of the treatment on opioid side effects, a variable that summarizes the presence of any side effect two hours after the placement of the magnets will be created, and the absolute risk difference for developing any side effect will be estimated. Ninety five percent confidence intervals will be reported.

This proposal would contribute substantially to the complementary medicine field, not only because of its scientific rigor, but also because the pain model that it evaluates strengthens the validity of the results.

02

Conditions studied

  • Postoperative Pain

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Keywords

  • Static magnetic therapy
  • Pain
  • Analgesia
  • Opioids
03

In context

Pain

2,216 studies on the registry are indexed under Pain; 915 are open to participants now.

This study's enrollment of 164 is above the median of 70 across 1,901 interventional studies indexed under Pain.

Browse Pain studies →

Lead sponsor

Javeriana University is the lead sponsor of 7 studies on the registry; none are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
8 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Hospitalized or ambulatory patients 8 years old or older subjected to surgical procedures under general anesthesia, who reported at least moderate pain.

Exclusion criteria

Exclusion Criteria:

  • Subjects with surgeries longer than 3 hours
  • Multiple surgical wounds
  • Back or craniofacial surgeries, or surgeries which required cast placement, bulky dressing or the implantation of metallic devices.
  • Subjects who did not understand the pain scales employed
05

Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double
Enrollment
164 participants

Interventions

  • DeviceMagnets
06

What researchers measure

Primary outcomes

  1. Pain intensity at rest

Secondary outcomes

  1. Opioid requirements

  2. Opioid side effects

07

Study locations

1 site
  • San Ignacio Hospital
    Bogota, DC, Colombia
08

References and documents

Publications

  • Cepeda MS, Carr DB, Sarquis T, Miranda N, Garcia RJ, Zarate C. Static magnetic therapy does not decrease pain or opioid requirements: a randomized double-blind trial. Anesth Analg. 2007 Feb;104(2):290-4. doi: 10.1213/01.ane.0000230613.25754.08. PubMed 17242082 ↗
09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Mar 20, 2008, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT00104533
Lead sponsor
Javeriana University
First posted
Mar 2, 2005
Start date
Sep 2004
Completion
Sep 2005
Last update
Mar 20, 2008

Study contacts

M. Soledad Cepeda, MD, PhD
principal investigator · Javeriana University School of Medicine
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Mar 2005. You cannot join it, but the record below documents what was studied.

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