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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT00554320
Other study ID # RP07066
Secondary ID
Status Completed
Phase N/A
First received November 2, 2007
Last updated September 17, 2009
Start date January 2009
Est. completion date June 2009

Study information

Verified date September 2009
Source Summa Health System
Contact n/a
Is FDA regulated No
Health authority United States: Institutional Review Board
Study type Interventional

Clinical Trial Summary

We will rigorously test whether modulation of the motor cortex by transcranial direct current stimulation (tDCS) is an effective treatment for patients with chronic pelvic pain through the following specific aims:

A) The primary aim of this study is to determine whether transcranial direct current stimulation applied to the motor cortex in patients with chronic pelvic pain induces a significant decrease in the pain or symptoms as compared with sham tDCS. We will also measure changes in the clinical symptom scores of multiple pelvic organs, drug intake (narcotic), anxiety, depression, traumatic stress, as well as overall improvement in the quality of life to assess the effects of this treatment.

B) Determine the duration of the clinical effects of tDCS. We will therefore compare the amelioration of pain and related symptoms between active and sham tDCS for one year following treatment.

C) Determine whether tDCS changes the threshold for pain detection as compared with sham tDCS. Patients with chronic pelvic pain have a lower threshold for pain as compared to healthy subjects and we hypothesized that this threshold will increase after stimulation with tDCS.

D) Finally, we will examine whether 5 days of tDCS treatment is safe for use in chronic pelvic pain patients. Safety will be assessed through neuropsychological tests and adverse event reporting.


Recruitment information / eligibility

Status Completed
Enrollment 24
Est. completion date June 2009
Est. primary completion date June 2009
Accepts healthy volunteers No
Gender Female
Age group 18 Years to 55 Years
Eligibility Inclusion Criteria:

- Subjects must be females between 18 and 55 years of age.

- Subjects must have a current VAS for pelvic pain of 5 or more.

Exclusion Criteria:

- Known pelvic malignancy.

- Patients with major depression with suicidal risk as clinically defined.

- Patients with other known, uncontrolled neuropsychiatric disorders.

- Abnormal neurological examination other than as signs of the condition studied in the present protocol.

- Contraindication to tDCS:

- A history of unmanaged substance abuse or dependence within the last 6 months.

- A history of previous treatment with tDCS.

Study Design

Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Crossover Assignment, Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor), Primary Purpose: Treatment


Intervention

Procedure:
tDCS
During each session, the anode electrode will be placed on the motor cortex (contralateral to the most [or predominant] painful side [or the side where the symptoms begin or the left as a default]) and the cathode will be placed over the contralateral supraorbital area. In active tDCS subjects, 1 mA of transcranial direct current stimulation will be applied for 30 minutes.
tDCS
For sham-controlled tDCS subjects, the same montage will be used; however current will be applied only for 30 seconds.

Locations

Country Name City State
United States Summa Health System Akron Ohio

Sponsors (1)

Lead Sponsor Collaborator
Summa Health System

Country where clinical trial is conducted

United States, 

Outcome

Type Measure Description Time frame Safety issue
Primary Patient Global Assessment (PGA): 2 weeks No
Primary Visual analog scale (VAS) for pain: 2 weeks No
Secondary Interstitial cystitis symptom index: 2 weeks No
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