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ICU Patients Under Invasive Mechanical VentilationPOXTRANCT06421012

Preoxygenation for Tracheal Aspirations in Intensive Care

A study testing Experimental : Patients without additional preoxygenation and Active Comparator : Patients with additional preoxygenation in people with ICU Patients Under Invasive Mechanical Ventilation, run by Assistance Publique - Hôpitaux de Paris at 1 site in France.

Recruiting

Looking for participants now. Contact the study team or a site below to ask about taking part.

Sites and contacts
Official record
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Trial summary

Clearing the airways is a complex phenomenon involving the production of secretions, the nature of mucus (viscosity, elasticity, stringiness, and adhesiveness), ciliary movement, and coughing. Read more about this study

Who is it for?
Ages 18 years and older
What is being tested?
Experimental : Patients without additional preoxygenation and Active Comparator : Patients with additional preoxygenation
Type of treatment
Surgery or procedure
Could I receive a placebo?
No, everyone receives an active treatment
How many people
2,260 participants
Where
1 siteFrance
Study dates
7 Jan 2025to 10 Dec 2027
Phase
Interventional
Are there results?
Not yet: the study is under way

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

  • 18 years of age or older
  • Hospitalized in ICU, under invasive mechanical ventilation for less than 24 hours
  • Information and signature of consent by patient or relative/trusted person, or emergency inclusion procedure

Who cannot join

  • Patient on ECMO
  • Not affiliated to a social security system
  • Pregnant
  • Under legal protection (curatorship, guardianship or safeguard of justice)
  • Patient under AME
  • Patient included in another interventional study that may have an impact on the evaluation criteria of the present study

Trial locations and contacts

1 site in 1 country. Contact the study team or a site near you to ask about taking part.

Jean Michel CONSTANTIN, Pr contact

01 42 17 73 05

jean-michel.constantin@aphp.fr

France1 site, 1 recruiting
  • Hôpital Pitié Salpêtrière

    Paris, 75013

    Claire FAZILLEAU, 01 42 16 22 75, claire.fazilleau@aphp.fr

    Jean Michel CONSTANTIN, Pr, 01 42 17 73 05, jean-michel.constantin@aphp.fr

    Recruiting

Other trials in France

About this study

Official title: Preoxygenation for Tracheal Aspirations in Intensive Care, a Randomized Controlled Trial

Clearing the airways is a complex phenomenon involving the production of secretions, the nature of mucus (viscosity, elasticity, stringiness, and adhesiveness), ciliary movement, and coughing. In intubated and ventilated patients, endotracheal suctioning occur when the patient is "unable to clear the airways of obstructions hindering the free passage of air." These suctioning can lead to transient desaturation exacerbated by a decrease in cardiac output due to increased mean arterial pressure, promoting cardiac arrhythmias. To minimize these effects, it is recommended to perform additional preoxygenation, by increasing the fraction of O2 in the air delivered to the patient by the ventilator 2-3 minutes before the procedure. These longstanding recommendations were reiterated in 2022, based on outdated studies involving systematic suctioning that required disconnecting the patient from the ventilator.

Currently, suctioning are performed on-demand, based on the patient's congestion status, either through the endotracheal tube cap or a "closed system." Desaturations have become infrequent without establishing that additional preoxygenation can prevent them. Moreover, additional preoxygenation is not without risks. By inducing de-nitrogenation atelectasis with a loss of lung volume, it can exacerbate pre-existing lung injuries in the most severe patients. In less severe cases, preoxygenation leads to transient hyperoxia, with various deleterious effects impacting patient prognosis. Thus, a short-term risk, such as deep desaturations, must be balanced against a medium-term risk of hyperoxia and de-nitrogenation.

Read the detailed description

Clearing the airways is a complex phenomenon involving the production of secretions, the nature of mucus (viscosity, elasticity, stringiness, and adhesiveness), ciliary movement, and coughing. Endotracheal suctioning are performed when the patient is "unable to clear the airways of obstructions hindering the free passage of air." Classically, endotracheal suctioning cause transient desaturation exacerbated by a decrease in cardiac output due to an increase in mean arterial pressure, promoting cardiac arrhythmias. To minimize these effects, it is recommended to perform additional preoxygenation, i.e., increasing the fraction of O2 in the air delivered to the patient by the ventilator 2-3 minutes before the procedure. These longstanding recommendations were reiterated in 2022, based on outdated studies involving systematic suctioning and/or disconnecting the patient from the ventilator.

Today, suctioning are performed on-demand, based on the patient's congestion status, either through the endotracheal tube cap or a "closed system." Desaturations have become rare without establishing that additional preoxygenation can prevent them. Moreover, additional preoxygenation is not without risks. In the short term, it induces de-nitrogenation atelectasis resulting in a loss of lung volume that can worsen pre-existing lung injuries in the most severe patients. In less severe cases, preoxygenation is responsible for transient hyperoxia, with various deleterious effects impacting patient prognosis. Thus, a short-term risk, such as deep desaturations, is juxtaposed with a medium-term risk of hyperoxia and de-nitrogenation.

The investigators hypothesize that the absence of additional preoxygenation is not inferior, in terms of deep desaturations, to the strategy with additional preoxygenation, and it would avoid exposing patients to the risks of de-nitrogenation-induced atelectasis and hyperoxia.

The investigators retained a margin of non-inferiority for the relative risk of 1.1, i.e. an increase of 10% of deep desaturations.

The main analysis will be performed on the per-protocol population (more conservative in non-inferiority trials).The per-protocol population will include patients who had at least one suctioning and for whom the additional preoxygenation strategy allocated by randomisation was followed in at least 70% of all suctioning reported in the patient's care record. Patients who stopped their participation in the study before endpoint timeframe and those who had never had an suctioning will not be included in the per protocol population.

The unit of analysis will be the patient, and a rate of suctioning leading to deep desaturation will be calculated for each patient, as described in the primary endpoint. The mean rate of suctioning leading to deep desaturation will then be calculated by treatment group (with additional preoxygenation / without additional preoxygenation).

Being tested
Experimental : Patients without additional preoxygenation, Active Comparator : Patients with additional preoxygenation
Keywords
Endotracheal suctioning, Preoxygenation, Ventilation, ICU
Medical subject headings
Respiratory Aspiration

What participants receive

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

  • Experimental : Patients without additional preoxygenationProcedure or surgery

    Throughout the entire period of their mechanical ventilation, patients will not receive additional preoxygenation before any endotracheal suctioning; their FiO2 value will be maintained constant

  • Active Comparator : Patients with additional preoxygenationProcedure or surgery

    Throughout the entire period of their mechanical ventilation, patients will receive additional preoxygenation at 100% FiO2 for a systematic 2-minute duration prior to any endotracheal suction. Subsequently, the FiO2 will be reset to the previous default value.

Study groups in NCT06421012
Study groupRoleWhat they receive
Patients without additional preoxygenationExperimentalNot described
Receives: Procedure: Experimental : Patients without additional preoxygenation
Patients with additional preoxygenationActive comparatorNot described
Receives: Procedure: Active Comparator : Patients with additional preoxygenation

What is being measured

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

  1. Rate of suctioning leading to deep desaturation

    It will be calculated for each patient as the number of suctioning leading to deep desaturation (SpO2 88% or less, and 85% or less for patients with chronic obstructive pulmonary disease COPD), divided by the total number of endotracheal suctioning throughout the period. Oxygen saturation values will be collected every minute during the 15 minutes post-suctioning. Endotracheal suctioning in patients already ventilated with 100% FiO2 started prior to the decision to aspirate will not be taken into account

    Measured: from Day 0 to ventilator weaning, and at the latest Day 28

Secondary outcomes (19)
  1. Suctioning rate leading to severe desaturation

    It will be calculated for each patient as the number of suctioning leading to severe desaturation (SpO2 85% or less, and 80% or less for patients with COPD), divided by the total number of endotracheal suctioning throughout the period

    Measured: From Day 0 to ventilator weaning, and at the latest Day 28

  2. Number of ventilator free days at D28

    Number of days without ventilation. In case of death value will be set to zero

    Measured: From Day 0 to Day 28

  3. Ventilator-associated pneumonia

    Ventilator-associated pneumonia, as defined by the Formalized Recommendation of Experts from the SFAR-SRLF in 2017

    Measured: From Day 0 to ICU-discharge, and at the latest Day 28

  4. Intensive care delirium

    Delirium occurring in ICU, defined by a positive result on the CAM-ICU clinical assessment tool specific to ICU delirium

    Measured: From Day 0 to ICU-discharge, and at the latest Day 28

  5. Composite criteria of ischemic phenomena in ICU, including one of the following: stroke, myocardial infarction, digestive ischemia

    Composite criteria including at least one of the following: ischemic stroke, myocardial infarction, digestive ischemia

    Measured: From Day 0 to ICU-discharge, and at the latest Day 28

  6. Ischemic stroke

    Ischemic stroke occurring in intensive care, defined by the combination of the onset of focal motor deficit and compatible cerebral imaging

    Measured: From Day 0 to ICU-discharge, and at the latest Day 28

  7. Myocardial infarction

    Myocardial infarction occurring in intensive care, defined by an acute coronary syndrome with ST segment elevation and troponin elevation

    Measured: From Day 0 to ICU-discharge, and at the latest Day 28

  8. Digestive ischemia

    Digestive ischemia occurring in intensive care, diagnosed by CT scan or digestive endoscopy

    Measured: From Day 0 to ICU-discharge, and at the latest Day 28

  9. Cardiac arrest

    Cardiac arrest occuring in intensive care

    Measured: From Day 0 to ICU-discharge, and at the latest Day 28

  10. Acute kidney injury

    Acute kidney injury occurring in intensive care, defined by the initiation of renal replacement therapy

    Measured: From Day 0 to ICU-discharge, and at the latest Day 28

  11. First bowel movements

    Time to first bowel movements

    Measured: From Day 0 to ICU-discharge, and at the latest Day 28

  12. ICU discharge vital status

    Vital status at discharge from ICU

    Measured: At ICU discharge and at the latest Day 90

  13. Hospital discharge vital status

    Vital status at discharge from hospital

    Measured: At hospital discharge, and at the latest Day 90

  14. Mean saturation over 15 minutes post-suctioning

    Mean saturation over all the period of 15 minutes post suctioning

    Measured: From Day 0 to ventilator weaning, and at the latest Day 28

  15. Absolute variation between saturation before suctioning and minimum saturation over 15 minutes post-suctioning

    Saturation over all the period of 15 minutes post suctioning

    Measured: From Day 0 to ventilator weaning, and at the latest Day 28

  16. Acute respiratory distress syndrome (ARDS)

    ARDS according to the Berlin definition, characterized by 1) acute respiratory failure evolving for a week or less, 2) bilateral opacities on thoracic imaging, 3) no evidence of predominant hydrostatic edema, 4) hypoxemia with a PaO2/FIO2 ratio < 300 mmHg for positive end-expiratory pressure set at 5 cmH2O or more, with 3 severity stages defined based on hypoxemia

    Measured: From Day 0 to hospital discharge, and at the latest Day 90

  17. Length of ICU stay

    Length of stay in intensive care

    Measured: at ICU discharge, and at the latest Day 90

  18. Length of hospital stay

    Length of stay in hospital

    Measured: at hospital discharge, and at the latest Day 90

  19. Time in minutes between endotracheal suctioning and eventual desaturation

    For each desaturation, time in minutes between endotracheal suctioning and desaturation

    Measured: From Day 0 to ventilator weaning, and at the latest Day 28

Timeline

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

  1. First posted20 May 2024
  2. Study start7 Jan 2025
  3. Primary completion10 Oct 2027 (estimated)
  4. Study completion10 Dec 2027 (estimated)

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
Supportive care
Allocation
Randomised
Intervention model
Parallel groups
Masking
None (open label)
Enrolment
2,260 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06421012
Sponsor's protocol ID
APHP230486
Other IDs
2023-A00694-41
Acronym
POXTRA
Status last verified
May 2025
First submitted
15 May 2024
Last updated
11 May 2025
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
Yes: The procedures carried out with the French data privacy authority (CNIL, Commission nationale de l'informatique et des libertés) do not provide for the transmission of the database, nor do the information and consent documents signed by the patients. Consultation by the editorial board or interested researchers of individual participant data that underlie the results reported in the article after deidentification may nevertheless be considered, subject to prior determination of the terms and conditions of such consultation and in respect for compliance with the applicable regulations.

Questions about this trial

What is this clinical trial studying?

A study testing Experimental : Patients without additional preoxygenation and Active Comparator : Patients with additional preoxygenation in people with ICU Patients Under Invasive Mechanical Ventilation, run by Assistance Publique - Hôpitaux de Paris 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 3 inclusion and 6 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: looking for participants now, as of the sponsor's last update on 11 May 2025. 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?

This study is still under way. Results are not available in the source record yet.

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

Contact Claire FAZILLEAU (01 42 16 22 75, claire.fazilleau@aphp.fr), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Rate of suctioning leading to deep desaturation (time frame: from Day 0 to ventilator weaning, and at the latest Day 28). 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 11 May 2025.

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