An interventional study of FreeO2 automated oxygen titration system and Standard oxygen weaning in Acute Hypoxemic Respiratory Failure and Hypoxemia, sponsored by Centre Hospitalier Universitaire de Besancon. Not yet recruiting. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-08-31.
Sponsored by Centre Hospitalier Universitaire de Besancon · Not applicable, Interventional, and Treatment
Acute hypoxemic respiratory failure (AHRF) is a common condition associated with substantial morbidity, mortality, and healthcare resource utilization. Although advances in oxygen therapy, particularly high-flow nasal oxygen (HFNO), have improved the management of AHRF, the transition from HFNO to conventional low-flow oxygen therapy remains an important and understudied phase of patient care.
During oxygen weaning, oxygen flow is usually adjusted manually by healthcare professionals according to a target oxygen saturation (SpO₂). Because oxygen saturation is often assessed intermittently outside continuously monitored settings, patients may experience episodes of hypoxemia or hyperoxia before oxygen flow is adjusted.
FreeO2 is an automated oxygen titration system that continuously adjusts oxygen flow according to the patient's SpO₂. Its safety and effectiveness have been demonstrated in several clinical settings, but its use during oxygen weaning after HFNO has not been specifically evaluated.
The objective of this study is to assess whether the use of the FreeO2 system during oxygen weaning after HFNO in patients recovering from acute hypoxemic respiratory failure improves oxygen saturation control and facilitates the weaning process compared with standard oxygen therapy.
1,369 studies on the registry are indexed under Respiratory Insufficiency; 264 are open to participants now.
This study's planned enrollment of 40 is below the median of 60 across 860 interventional studies indexed under Respiratory Insufficiency.
Browse Respiratory Insufficiency studies →Centre Hospitalier Universitaire de Besancon is the lead sponsor of 450 studies on the registry; 97 are open to participants now.
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Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).
Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.
Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.
Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.
Periods have stopped for good: usually no period for 12 months in a row without another medical reason, sometimes confirmed by a blood test (FSH).
Childbearing potential
Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).
Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Contraception
Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.
Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Postmenopausal
Periods have stopped for good: usually no period for 12 months in a row without another medical reason, sometimes confirmed by a blood test (FSH).
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Participants assigned to the intervention group will undergo oxygen weaning using the FreeO2 automated oxygen titration system.
Device: FreeO2 automated oxygen titration system
Participants will undergo standard oxygen weaning according to usual clinical practice, with oxygen flow adjusted manually based on target oxygen saturation.
Other: Standard oxygen weaning
The FreeO2 system is an automated oxygen titration device that continuously adjusts oxygen flow according to the patient's peripheral oxygen saturation (SpO₂). In this study, the device will be used during oxygen weaning after high-flow nasal oxygen therapy in patients recovering from acute hypoxemic respiratory failure.
Oxygen flow will be adjusted manually by healthcare professionals according to usual clinical practice and predefined target oxygen saturation levels.
Cumulative oxygen volume administered during the oxygen weaning period
Time frame: From initiation of oxygen weaning until successful weaning (oxygen discontinuation or return to baseline oxygen requirements with stable oxygen flow for ≥4 hours).
No study locations are listed for this record.
Plan to share: Undecided
No publications or documents are linked to this record.
Start is estimated for Sep 2026; primary completion for Sep 2027, 12 months later.
Of 359 non-industry interventional studies with no phase under Respiratory Insufficiency, half reached primary completion within 24 months of starting (the median), counting those still running; a quarter within 11 and three quarters within 47. This study's planned 12 months is below that.
Counting every sponsor, half of 375 studies reached it within 24 months; a quarter within 10 and three quarters within 46.
How these figures are worked out, and which studies are left out of them.
This study is not yet recruiting, as verified in Apr 2026. You cannot join it, but the record below documents what was studied.
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