Effectiveness of Magnetic Therapy on Pain Intensity

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE3

Total Enrollment

164 participants

Study Classification

INTERVENTIONAL

Study Start Date

2004-09-30

Study Completion Date

2005-09-30

Brief Summary

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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.

Detailed Description

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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.

Conditions

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Postoperative Pain

Keywords

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Static magnetic therapy Pain Analgesia Opioids

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

DOUBLE

Interventions

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Magnets

Intervention Type DEVICE

Eligibility Criteria

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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

* 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

Minimum Eligible Age

8 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Principal Investigators

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M. Soledad Cepeda, MD, PhD

Role: PRINCIPAL_INVESTIGATOR

Javeriana University School of Medicine

Locations

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San Ignacio Hospital

Bogotá, DC, Colombia

Site Status

Countries

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Colombia

References

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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.

Reference Type RESULT

PMID: 17242082 (View on PubMed)

Other Identifiers

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1203-04-16295

Identifier Type: -

Identifier Source: secondary_id

1753