Spinal Magnetic Stimulation in Neuropathic Pain

NCT ID: NCT00443469

Last Updated: 2010-03-31

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

20 participants

Study Classification

INTERVENTIONAL

Study Start Date

2006-08-31

Study Completion Date

2010-02-28

Brief Summary

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It involves delivering a train of magnetic pulses, 5 at each time, to the brain. In the present study, we are using the same method to treat severe pain due to nerve conditions. You will be given up to 1000 pulses in total over the spine in the lower back (Spinal Magnetic Stimulation or SMS). Each train will be given in 10-second intervals. You will have SMS on a single day. You will be given SMS pulses at 1 or 10 per second. No stimulation will be given over the head.

You will be assessed before and after the study for up to 1 week. Your usual medical treatment will be continued

Detailed Description

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You must be aware of that this is a placebo-controlled trial. This means that you may either receive real SMS or sham SMS. The latter involves a harmless process of ineffective stimulation, designed for comparison with real SMS. Whether you receive either form of treatment will be assigned randomly, and there will be a 50% chance of being assigned to either.

Conditions

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Neuropathic Pain

Keywords

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magnetic stimulation neuropathic pain spinal lower limb clinical trial

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

DOUBLE

Participants Caregivers

Study Groups

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Magnetic Stimulation

Group Type EXPERIMENTAL

magnetic stimulation

Intervention Type DEVICE

SMS was delivered with a repetitive magnetic stimulator connected to a figure of eight coil capable of delivering a maximum output of 2 Tesla per pulse. The coil measured 90 mm in each wing and was centered over the surface landmark corresponding to the cauda equina region. SMS was performed with the patient lying comfortably in the prone position and a soft pillow supported the lower abdomen. The coil was placed flat over the back with the handle pointing cranially. Each patient on active treatment received 200 trains of 5 pulses delivered at 10 Hz, at an interval of 5 s between each train. As this was a pilot study, each only received 1000 pulses in a single session.

Magnetic Stimulation with tilted coil

Magnetic Stimulation with tilted coil

Group Type PLACEBO_COMPARATOR

Magnetic Stimulation with tilted coil

Intervention Type DEVICE

The placebo arm consisted of 'sham' SMS delivered with the coil angled vertically and one of the wing edges in contact with the stimulation point. As this coil type allows maximum magnetic flux at the center of the intersection, we believe minimum or no stimulation was effected at the edge of the coil in contact with the patient. Stimulation parameters and duration were unchanged in this arm.

Interventions

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magnetic stimulation

SMS was delivered with a repetitive magnetic stimulator connected to a figure of eight coil capable of delivering a maximum output of 2 Tesla per pulse. The coil measured 90 mm in each wing and was centered over the surface landmark corresponding to the cauda equina region. SMS was performed with the patient lying comfortably in the prone position and a soft pillow supported the lower abdomen. The coil was placed flat over the back with the handle pointing cranially. Each patient on active treatment received 200 trains of 5 pulses delivered at 10 Hz, at an interval of 5 s between each train. As this was a pilot study, each only received 1000 pulses in a single session.

Intervention Type DEVICE

Magnetic Stimulation with tilted coil

The placebo arm consisted of 'sham' SMS delivered with the coil angled vertically and one of the wing edges in contact with the stimulation point. As this coil type allows maximum magnetic flux at the center of the intersection, we believe minimum or no stimulation was effected at the edge of the coil in contact with the patient. Stimulation parameters and duration were unchanged in this arm.

Intervention Type DEVICE

Eligibility Criteria

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Inclusion Criteria

* All with neuropathic lower limb pain

Exclusion Criteria

* Contraindications to magnetic stimulation
Minimum Eligible Age

20 Years

Maximum Eligible Age

80 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Singapore General Hospital

OTHER

Sponsor Role lead

Responsible Party

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Singapore General Hospital, NNI

Principal Investigators

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YL Lo, MD

Role: PRINCIPAL_INVESTIGATOR

National Neuroscience Institute, Singapore General Hospital

Locations

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Singapore General Hospital

Singapore, , Singapore

Site Status

Countries

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Singapore

Other Identifiers

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#64/2006

Identifier Type: -

Identifier Source: org_study_id