Checks breathing at night in obese adults using CPAP for sleep apnea
Measures how often obese adults with sleep apnea have low night-time breathing while using CPAP.
Plain-language title generated from the registry record
Registry title: Prevalence of Nocturnal Hypoventilation in Obese Subjects Fiited With Continuous Positive Airway Pressure for Obstructive Sleep Apnea / Hypopnea Syndrome
Key facts
- Where
- Toulouse, FranceSee the site
AI summary: who the study is looking for
From the trial's eligibility criteria. Machine-read from the registry text on this page, so it can be wrong. The registry text below and the trial team decide who can take part.
The trial is looking for adults with obesity and sleep apnea who already use a CPAP machine at night with good results.
- Age
- 18 to 80 years
- Sex
- All sexes can join.
- Disease stage
- Obesity (Body Mass Index > 30 kg/m2) with obstructive sleep apnea treated with CPAP. CPAP treatment must be of "good quality": unintentional leaks below the manufacturer's limit and residual AHI < 10/h.
- Earlier treatment
- Must have been fitted with CPAP by one of these providers: ASTEN, Vitalaire, Orkyn, ISIS, RespiO2, BASTIDE, for more than 3 months. Must have used it more than 4 consecutive hours per night on average over 3 months.
Main reasons for not taking part
- Patient under legal protection measure
- Patient who does not use the CPAP enough (non-compliant)
- Pregnant or breast-feeding women
Read by machine on 12 November 2026.
Could this be for you?
Answer for yourself. This is not a decision: only the study team can say whether you can take part.
- Are you between 18 and 80 years old?
Source: NCT07152990, who can take part
Where in France
- CHU de Toulouse - Hopital LarreyToulouse, FranceContact: Sandrine PONTIERNo longer taking part
Questions to ask the study team
- How often do I need to come in, and for how long each time?
- Are travel costs paid?
- Can I keep my own doctor?
- What happens if I want to stop?
Contact the study team: see the registry record → Contacts and Locations
Print a page for my doctorTrial details
- Who runs it
- University Hospital, Toulouse
- Trial code
- NCT07152990
- Record updated
- 3 September 2025
- Original description
CAPNOSOH study is a single-center study conducted at Toulouse University Hospital, aiming to estimate the prevalence of obese and apneic subjects maintaining nocturnal hypoventilation under continuous positive airway pressure (CPAP).Read full original descriptionShow less
Prevalence of Nocturnal Hypoventilation Diagnosed by Transcutaneous Oxy-capnography in a Population of Obese Subjects Fitted With Continuous Positive Airway Pressure for Obstructive Sleep Apnea Hypopnea Syndrome.
CAPNOSOH study is a single-center study conducted at Toulouse University Hospital, aiming to estimate the prevalence of obese and apneic subjects maintaining nocturnal hypoventilation under continuous positive airway pressure (CPAP).
Inclusion: Obese patients (Body Mass Index > 30 kg/m2); Fitted by one of the following providers: ASTEN, Vitalaire, Orkyn, ISIS, RespiO2, BASTIDE for > 3 months with compliance of more than 4 consecutive hours per night in average during 3 months; "Good quality" criteria for continuous positive airway pressure (CPAP) treatment: compliance > 4 consecutive hours per night, unintentional leaks < limit defined by the manufacturer, residual AHI < 10/h; Aged 18 to 80; Affiliated or beneficiaries of the social security system or equivalent; Having given written informed consent; Able to understand instructions and information given.
Exclusion: Patient under legal protection measure; Non-compliant patients; Pregnant or breast-feeding women (assessed on questioning).