Baclofen/Diazepam Supps for Treatment of Pelvic Floor Myalgia (BDS)

June 5, 2018 updated by: John Thiel, Dr. John A. Thiel Medical Professional Corporation

A Randomized Double Blind Placebo Controlled Cross-over Trial of Baclofen and Diazepam Suppositories for the Management of Pelvic Floor Myalgia

This study is a randomized, placebo controlled double blind cross over trial. Patients presenting with pelvic floor myalgia will be asked to complete a series of standardized questionnaires to assess their pain, quality of life and sexual function and satisfaction. They will be randomized to either a treatment group or placebo group and will use the supplied suppositories once daily for 2 months. They will then undergo a one month "washout" after which they will be placed in the cross over group for a second two months of treatment.

Primary outcome measure: change in Visual Analogue Scale for Pain (VAS-P) scores before and after treatment Secondary outcome measures: change in Female Sexual Function Index (FSFI), Patient Global Impression of Improvement (PGI-I), and Short Form Health Survey (SF-12) before and after treatment

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Unknown

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

Chronic pelvic pain is a complex multi-faceted problem that places a substantial burden on the healthcare resources. In Canada, the average hospital related cost for women requiring surgery or inpatient admission for chronic pelvic pain is $25 million each year. Chronic pelvic pain is defined as either persistent pain for at least 6 months or "recurrent episodes of abdominal/pelvic pain, hypersensitivity, or discomfort, often associated with elimination changes and sexual dysfunction in the absence of an organic etiology." Chronic pelvic pain is common and affects women of all ages and backgrounds. 15-20% of women have chronic pelvic pain lasting for more than 1 year.

Pelvic floor myalgia is an important and common contributor to chronic pelvic pain that may be present alone or may co-exist with other gynecological, urological, colorectal, and musculoskeletal medical conditions. The International Urogynecological Association/International Continence Society joint report published in February 2017 defines pelvic floor myalgia as pain in the musculature of the pelvic floor.6 Patients with high-tone pelvic floor dysfunction (HTPFD) have levator hypercontractility and present with pain with internal vaginal examination and intercourse. In a 2011 prospective cross-sectional study by Fitzgerald et al., 63% of patients with self-reported chronic pelvic pain examined by a physician and 73.7% of patients examined by a physiotherapist were found to have pelvic floor myalgia. Although pelvic floor myalgia is a common condition encountered in gynecology, it is frequently an unrecognized and under-treated component of chronic pelvic pain. Pelvic floor myalgia has a significant impact on the patient's quality of life. Persistent chronic pain may result in patient's anxiety, low mood, depression, sleep disturbances, feeling of hopelessness and helplessness, frustration, and psychological distress.

The first line of treatment for pelvic floor myalgia is pelvic floor muscle relaxation. Reducing the resting tone of pelvic floor musculature has been shown to improve chronic pelvic pain. Current treatment options for pelvic floor myalgia include pelvic floor physiotherapy, Thiele massage, biofeedback with electrical stimulation, behavioural modifications, acupuncture, medications such as antidepressants,1 trigger point injections with botulin A toxin, warm sitz baths, and neuromodulation.

Recently, intravaginal diazepam has been used an off-label treatment option for high-tone pelvic floor myalgia. Diazepam is a benzodiazepine derivative that has both antispasmotic and anxiolytic activity. It is used as a muscle relaxant and enhances the inhibitory action of gamma-amino butyric acid (GABA) on neuronal excitability, resulting in decreased action potentials. The benefit of local therapy is the avoidance of the common side effects of benzodiazepines such as drowsiness, fatigue, and ataxia. Currently, evidence is lacking in regards to the effectiveness of intravaginal diazepam on treatment of chronic pelvic pain. The 2010 retrospective chart review of 26 patients by Rogalski et al. revealed clinically significant reduction in Visual Analogue Scale for Pain (VAS-P) and Female Sexual Function Index (FSFI) with diazepam suppositories used for 30 days as an adjuvant therapy to pelvic floor physiotherapy and intramuscular trigger point injections. Similarly, the 2011 study revealed 62% improvement in symptoms with intravaginal diazepam.

Baclofen is a skeletal muscle relaxant. It is a GABA-B receptor agonist which is commonly used for treating spasticity. The literature on topical baclofen use in pelvic floor dysfunction is minimal. Topical therapy is advantageous to avoid the common systemic side effects such as drowsiness, hypotonia, hypotension, and headache. A retrospective study examining the use of topical baclofen for provoked vulvodynia showed an improvement in pain and sexual function.

Baclofen may also be used in combination with diazepam for treatment of pelvic floor myalgia. A 2016 retrospective chart review performed at the University of Saskatchewan revealed a reduction in both dyspareunia and pelvic floor muscle spasm with the use of baclofen and diazepam vaginal suppositories.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Anticipated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
60

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years to 50 years (Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

Female

Description

Inclusion Criteria:

  • Patients with significant pelvic floor dyssynergia and pain during sexual activity.

Exclusion Criteria:

  • Decide you do not wish to participate
  • Are pregnant
  • Have active pelvic inflammatory disease
  • Have an active sexually transmitted infection (STI)
  • Have a known or suspected cancer of the genital tract
  • Have untreated or unevaluated changes in your Pap smear
  • Are not currently sexually active
  • Have an allergy to either baclofen or valium
  • Are unable to complete the necessary study questionnaires

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Crossover Assignment
  • Masking: Quadruple

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Active Comparator: Vaginal Baclofen/diazepam supp
Insert vaginal suppository once daily
Drug: Baclofen/diazepam
Vaginal suppository placed once daily, patients will record pelvic pain daily on a VAS scale, sexual satisfaction and quality of life on a standardized questionnaire weekly
Other Names:
  • Lioresal
Placebo Comparator: Vaginal Placebo supp
Insert vaginal suppository once daily
Drug: Vaginal placebo
Vaginal suppository placed once daily, patient will record pelvic pain daily on a VAS scale, sexual satisfaction and quality of life on a standardized questionnaire weeky.
Other Names:
  • suppository

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Change in Visual Analogue Scale for Pain (VAS-P) scores before and after treatment
Time Frame: 5 months
The scale ranges from 0 (no pain) to 10 (worst pain ever experienced)
5 months

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Change in Female Sexual Function Index (FSFI)
Time Frame: 5 months
Self report measure of female sexual dysfunction
5 months
Patient Global Impression of Improvement (PGI-I)
Time Frame: 5 months
Ranks patients overall feeling about health from 1 (very much better) to 7 (very much worse)
5 months
Short form Health Survey (SF-12)
Time Frame: 5 months
Standardized self assessment tool to measure overall health status
5 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Dr. John A. Thiel Medical Professional Corporation

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Anticipated)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
September 1, 2018

Primary Completion (Anticipated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
December 31, 2018

Study Completion (Anticipated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
December 31, 2018

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
January 26, 2018

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
February 2, 2018

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
February 9, 2018

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
June 7, 2018

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
June 5, 2018

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
June 1, 2018

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • Jthiel

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

No

IPD Plan Description

only pooled data will be shared outside of the research team

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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