Nerve Conduction Block Using Transcutaneous Electrical Currents

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

UNKNOWN

Clinical Phase

NA

Total Enrollment

10 participants

Study Classification

INTERVENTIONAL

Study Start Date

2017-07-31

Study Completion Date

2017-09-30

Brief Summary

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The purpose of this study is to determine whether the transcutaneous application of unmodulated high frequency alternating currents could produce a quickly conduction block of peripheral nerve.

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Detailed Description

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In the last years several animal experimental studies have evidenced that high frequency unmodulated currents about 5 KHz can cause a peripheral nerve block. However electric currents with these high frequencies that are usually used for the treatment of pain in humans are interrupted or modulated (i.e. interferential currents).

It has show that the diameter of the nerve it is related with the frequency to produce the conduction block. For this reason the investigators decided to applied 20KHz to observe the effects on maximal manual force and to compare versus sham stimulation.

Only one study has applied 5KHz on experimental pain and they have demonstrated changes in somatosensory thresholds.

Conditions

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Nerve Block Electric Stimulation

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

Primary Study Purpose

TREATMENT

Blinding Strategy

DOUBLE

Participants Outcome Assessors

Study Groups

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High-Frequency

Transcutaneous application of high frequency electrical current over the arm for a 20 minutes session. The intensity of the current will increase until participants report a "strong but comfortable" sensation, just below motor threshold.

Group Type EXPERIMENTAL

High-Frequency Stimulation

Intervention Type DEVICE

high-Frequency electrical stimulation over superficial ulnar and median nerve through the electrotherapy device Myomed 932. (Enraf-Nonius, Delft, Netherlands)

Sham stimulation

Electrodes are placed over the arm for a 20 minutes in the same manner as experimental group but will be applied a sham electrical stimulation increasing the current intensity of an unconnected channel

Group Type SHAM_COMPARATOR

sham Stimulation

Intervention Type DEVICE

Sham transcutaneous electrical stimulation over superficial ulnar and median nerve through the electrotherapy device Myomed 932. (Enraf-Nonius, Delft, Netherlands)

Interventions

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High-Frequency Stimulation

high-Frequency electrical stimulation over superficial ulnar and median nerve through the electrotherapy device Myomed 932. (Enraf-Nonius, Delft, Netherlands)

Intervention Type DEVICE

sham Stimulation

Sham transcutaneous electrical stimulation over superficial ulnar and median nerve through the electrotherapy device Myomed 932. (Enraf-Nonius, Delft, Netherlands)

Intervention Type DEVICE

Eligibility Criteria

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Inclusion Criteria

* Healthy volunteers

Exclusion Criteria

* Neuromuscular disease.
* Epilepsy.
* Trauma, surgery or pain affecting the upper limb, shoulder girdle or cervical area.
* Osteosynthesis material in the upper limb.
* Diabetes.
* Cancer.
* Cardiovascular disease.
* Pacemaker or other implanted electrical device.
* Take any drug (NSAIDs, corticosteroids, antidepressants, analgesics, antiepileptics, ...) during the study and in the previous 7 days.
* Presence of tattoos or other external agent introduced into the treatment or assessment area.
* Pregnancy

Minimum Eligible Age

18 Years

Maximum Eligible Age

65 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes