Clinical trial Recruiting at 1 site Interventional Ages 18 to 80

Effects of CPAP vs. High Flow Nasal Oxygen in ARDS Patients

Official title: Physiologic Effects of Two Non-invasive Respiratory Support Therapies (continuous Positive Airway Pressure Vs High Flow Nasal Oxygenation) in Patients with Acute Respiratory Distress Syndrome: a Randomized Clinical Trial.

Run by Hospital Clinic of Barcelona · NCT06694311 · Data updated 2026-11-12

This study is testing whether using CPAP or high flow nasal oxygen helps people with acute respiratory distress syndrome breathe better and recover faster.

More Acute Respiratory Distress Syndrome (ARDS) trials

Quick facts

Study typeInterventional
Ages18 Years to 80 Years
SexAll
Enrollment120 (estimated)
SponsorHospital Clinic of Barcelona
Academic / other
Locations1 site (Barcelona, Barcelona)
StatusRecruiting
StartedJanuary 7, 2025
Main results expectedApril 30, 2026
Study endsJuly 31, 2027
Registry record updatedJanuary 15, 2025
Trial IDNCT06694311 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates for this study are non-intubated patients aged 18 to 80 with ARDS and specific oxygenation criteria.

Probably not a fit

Patients with chronic respiratory failure, significant nasal obstruction, or those who have received invasive ventilation may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This clinical trial investigates the physiological effects of continuous positive airway pressure (CPAP) compared to high flow nasal oxygenation (HFNO) in patients suffering from acute respiratory distress syndrome (ARDS). It is a multicenter, randomized, open-label, controlled trial involving 120 non-intubated patients who will receive either CPAP or HFNO for 48 hours alongside standard intensive care. The primary outcome is the assessment of lung injury through the biomarker sRAGE, while secondary outcomes include various pulmonary dysfunction biomarkers and intubation rates. The study aims to determine if CPAP can effectively reduce lung injury and improve clinical outcomes compared to HFNO.

Why it matters

Potential benefit: If successful, this study could provide insights into more effective non-invasive respiratory support options for ARDS patients, potentially reducing the need for intubation.

How similar studies have gone: Previous studies have shown that CPAP may be effective in reducing patient self-inflicted lung injury compared to HFNO, but this specific comparison in ARDS patients is still under investigation.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* PaO2/FiO2 ratio \<300 mmHg with FiO2 \>40% and PEEP ≥5 cmH2O (CPAP) or flow ≥30 L/min (HFNC).
* Bilateral pulmonary opacities observed in the chest X-ray, thoracic computerized tomography (CT) scan or lung ultrasonography (bilateral B lines)
* \<7 days from the pulmonary insult to symptom onset and criteria 1 and 2
* Not meeting the aforementioned criteria for \>24 hours prior to study inclusion.

Exclusion Criteria:

* Age \<18 years or \>80 years
* History of chronic respiratory failure or interstitial pulmonary disease
* Acute cardiogenic pulmonary edema after echocardiographic evaluation
* Having received either invasive mechanical ventilation or non-invasive mechanical ventilation (NIV)
* Atelectasis, pleural effusion, pulmonary masses or nodules as the primary finding in thoracic imaging.
* "Do not intubate, do not resuscitate" orders
* Presenting significant nasal obstruction.

Where it's running

  • Hospital Clínic de Barcelona
    Barcelona, Barcelona, Spain
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 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.