Evaluating CPAP treatment for severe asthma patients with sleep apnea

Effect of CPAP Treatment on Asthma Control in Patients With Severe Uncontrolled Asthma and Obstructive Sleep Apnea: The ASTHMA-SLEEP Study

NA · Hospital Clinic of Barcelona · NCT06314477

This study is testing if using a CPAP machine can help adults with severe asthma and sleep apnea breathe better and manage their asthma more effectively.

Quick facts

PhaseNA
Study typeInterventional
Enrollment138 (estimated)
Ages18 Years and up
SexAll
SponsorHospital Clinic of Barcelona (other)
Locations1 site (Barcelona, Spain)
Trial IDNCT06314477 on ClinicalTrials.gov

What this trial studies

This study aims to assess the effects of Continuous Positive Airway Pressure (CPAP) treatment on asthma control in patients suffering from severe uncontrolled asthma and obstructive sleep apnea (OSA). It is a multicenter, prospective, randomized, controlled clinical trial involving adults over 18 years old who meet specific criteria for asthma severity and sleepiness levels. Participants will undergo polysomnography to confirm OSA and will be randomized to receive either standard treatment or standard treatment plus CPAP for a duration of 12 months, with evaluations at multiple time points.

Who should consider this trial

Good fit: Ideal candidates are adults over 18 with severe uncontrolled asthma and an apnea-hypopnea index of 15 or higher.

Not a fit: Patients with central sleep apnea, other significant sleep disorders, or unstable comorbidities may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could significantly improve asthma control in patients with severe uncontrolled asthma and OSA.

How similar studies have performed: Previous observational studies have shown promise for CPAP treatment in patients with mild to moderate asthma, but this approach in severe uncontrolled asthma is novel.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Age \>18 years
* Diagnosis of severe uncontrolled asthma according to the criteria of the Spanish Asthma Management Guide (GEMA) or the Global Initiative for Asthma (GINA) and no hospitalizations the month prior to inclusion in the study.
* Apnea hypopnea rate greater than or equal to 15/hour
* Punctuation in the Epworth Sleepiness Scale ≤10
* Obtaining informed consent.

Exclusion Criteria:

* Previous treatment with CPAP
* Patient with central sleep apnea or Cheyne-Stokes respiration
* Other sleep disorders: narcolepsy, restless leg syndrome, chronic insomnia,
* Resistant hypertension
* Active Smoking
* Unstable comorbidities or medications may interfere with asthma control
* Pregnancy
* Any process that reduces life expectancy to \<1 year,
* Any medical or social factor that may limit CPAP compliance

Where this trial is running

Barcelona, Spain

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.

View on ClinicalTrials.gov →

Conditions: Obstructive Sleep Apnea, Asthma

Last reviewed 2026-05-15 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.