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ObesityNCT03277963

Perception of Pain During Obstructive Sleep Apnea Syndrome in Obese Patient

A study testing Pain perception tests (mechanical : VON FREY ELECTRONIQUE or electrical stimulus : PAIN MATCHER®) in people with Obesity and Obstructive Sleep Apnea Syndrome, run by University Hospital, Clermont-Ferrand at 1 site in France.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

Obstructive sleep apnea syndrome (SAOS), very commonly associated with obesity, induces major disturbances in sleep architecture. The hypotheses in this work are twofold: on the one hand, the SAOS could generate pain perception disorders in a population already affected by the mechanical weight constraints, generating… Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Obesity, Obstructive Sleep Apnea Syndrome
What is being tested?
Pain perception tests (mechanical : VON FREY ELECTRONIQUE or electrical stimulus : PAIN MATCHER®)
Type of treatment
Medical device
Could I receive a placebo?
No, everyone receives an active treatment
How many people
120 participants
Where
1 siteFrance
Study dates
4 Feb 2010to 1 Aug 2017
Phase
Interventional
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Patients over 18 years of age,
  • male or female,
  • obesity defined by a body mass index (BMI = weight in kg / height in m²) ≥ 30,
  • free from acute or chronic painful pathology,
  • free from any chronic analgesic treatment,
  • free from any psychotropic treatment by benzodiazepine and / or tricyclic antidepressant,
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  • presence of obstructive sleep apnea syndrome (with apnea-hypopnea index (IAH) 10 per hour of sleep) among 60 patients,
  • absence of obstructive sleep apnea syndrome (IAH <10 per hour of sleep) among 60 patients,
  • person who signed the information and consent form,
  • patients who have been screened for sleep apnea syndrome by Somnochek® negative (AHI <10 / h) in the last 6 months, provided that their weight is the same or lower at the time of inclusion,
  • Somnochek® sleep apnea syndrome screening positive and severe for hospitalization (IAH> 30 / h) in the last 3 months, provided that their weight is the same or higher at the time of inclusion.
  • In addition, the 23 patients in the subgroup with severe OSA must meet the following criteria:
  • presence of obstructive sleep apnea syndrome (with apnea-hypopnea index (IAH) 30 per hour of sleep) among 23 patients,
  • acceptance of treatment with PCC,
  • availability to come to the CHU for the control of pain threshold perception tests one month after the introduction of PPC treatment.

Who cannot join

  • difficulties in understanding and speaking French,
  • an alcohol abuse or dependence (DSM-IV),
  • an abuse or dependence on illicit drugs (DSM-IV),
  • an acute or chronic inflammatory pathology,
  • a neuro-muscular pathology,
  • clinical signs of right heart failure,
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  • an analgesic treatment,
  • treatment with benzodiazepines and / or tricyclic antidepressants, a β-blocking treatment,
  • Central sleep apnea,
  • person who is absent from another study or who has received more than 4500 euros in the year following his participation in clinical studies,
  • pregnant or nursing women,
  • person under tutelage or deprived of his rights,
  • refusal to sign the information and consent form.

Trial locations and contacts

1 site in 1 country.

France1 site
  • CHU Clermont-Ferrand

    Clermont-Ferrand, 63003

Other trials in France

About this study

Obstructive sleep apnea syndrome (SAOS), very commonly associated with obesity, induces major disturbances in sleep architecture. The hypotheses in this work are twofold: on the one hand, the SAOS could generate pain perception disorders in a population already affected by the mechanical weight constraints, generating potentially painful complications, and on the other hand, the improvement of sleep provided by continuous positive airway pressure (PPC) ventilation could "normalize" the pain perception thresholds. It was shown an early rebound effect after treatment on increasing pain threshold in the healthy subject. We want to check it among obese patients with OSA in early and mid-term.

Read the detailed description

In this controlled study, patients of both sexes over 18 years of age who are obese with a body mass index (BMI) of 30 will be included. They will benefit from a polygraphy to confirm or invalidate the presence of an obstructive sleep apnea syndrome (defined by an apnea-hypopnea index to 10). Patients will be tested for mechanical and electrical pain within one week of diagnosis. Among these patients, those with severe SAOS (IAH 30) warrant treatment with continuous positive airway pressure (usual procedure). They will be hospitalized for the implementation of this treatment (usual procedure) and subjected to mechanical and electrical pain tests on the second day after the treatment is put in place.

One month after the start of treatment, they will benefit from an ambulatory polygraph test (usual procedure) as well as mechanical and electrical pain tests.

Being tested
Pain perception tests (mechanical : VON FREY ELECTRONIQUE or electrical stimulus : PAIN MATCHER®)
Keywords
Obesity, Obstructive sleep apnea syndrome
Medical subject headings
Obesity, Sleep Apnea, Obstructive

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Pain perception tests (mechanical : VON FREY ELECTRONIQUE or electrical stimulus : PAIN MATCHER®)Device

    From a basal level causing no particular sensation, the mechanical or electrical stimulus is applied with a constant increasing rate of progression.

Study groups in NCT03277963
Study groupRoleWhat they receive
Absence of sleep apnea syndromeActive comparatorPain perception tests
Receives: Device: Pain perception tests (mechanical : VON FREY ELECTRONIQUE or electrical stimulus : PAIN MATCHER®)
Presence of sleep apnea syndromeExperimentalPain perception tests and for severe sleep apnea syndrome, treatment by positive airway pressure (PPC) ventilation
Receives: Device: Pain perception tests (mechanical : VON FREY ELECTRONIQUE or electrical stimulus : PAIN MATCHER®)

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. scales of pain

    sensibility, detection, tolerance

    Measured: at day 1

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted11 Sep 2017
  2. Study start4 Feb 2010
  3. Primary completion1 Feb 2017
  4. Study completion1 Aug 2017

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Prevention
Allocation
Non-randomised
Intervention model
Factorial
Masking
None (open label)
Enrolment
120 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT03277963
Sponsor's protocol ID
CHU-348
Other IDs
2008-A01045-50
Status last verified
Sep 2017
First submitted
4 Sep 2017
Last updated
13 Sep 2017
Results posted
No
FDA-regulated drug
No
FDA-regulated device
No

Questions about this trial

What is this clinical trial studying?

A study testing Pain perception tests (mechanical : VON FREY ELECTRONIQUE or electrical stimulus : PAIN MATCHER®) in people with Obesity and Obstructive Sleep Apnea Syndrome, run by University Hospital, Clermont-Ferrand at 1 site in France.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 15 inclusion and 13 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 13 Sep 2017. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in France. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

scales of pain (time frame: at day 1). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 13 Sep 2017.

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