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Status unknownNCT05497986Updated Aug 11, 2022

Conventional Low Flow Oxygenation Versus High Flow Nasal Cannula in Hypercapnic Respiratory Failure

An interventional study of High flow nasal cannula and Conventional low flow oxygenation in Hypercapnic Respiratory Failure and Acute Copd Exacerbation, sponsored by Hôpital de Verdun. Status unknown at 3 sites in Canada. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2022-08-11.

Sponsored by Hôpital de Verdun · Not applicable, Interventional, and Treatment

The sponsor has not verified this record recently (last verified Aug 2022), so the status shown — last known as Not yet recruiting — may be out of date.
Phase
Not applicable
Study type
Interventional
Enrollment
84
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

Current evidence suggests a mechanistic and physiological rationale for the use of high flow nasal cannula (HFNC) in acute respiratory hypoxemic failure (AHRF) based on physiological studies in airway models, healthy volunteers and patients with Chronic Obstructive Respiratory Disease (COPD). This is supported by observational studies in patients with AHRF with reductions in a range of respiratory and other physiological parameters. Observational studies also suggest similar intubation rates and lower failure rates with HFNC when compared to non-invasive ventilation (NIV) with improved patient acceptance and tolerance for HFNC.

The role of HFNC is less clear in acute hypercapnic respiratory failure. Although non-invasive ventilation is the recommended treatment, it is associated with discomfort, and a significant proportion (up to 25% in some reports) cannot tolerate non-invasive ventilation. Observational reports and limited data from randomized controlled trials suggests that HFNC is effective in treating patients with hypercapnic respiratory failure.

We designed this trial to assess whether early application of HFNC in patients with non-severe hypercapnic respiratory failure can correct barometric abnormalities, and prevent progression to non-invasive ventilation or tracheal intubation and mechanical ventilation.

02

Conditions studied

  • Hypercapnic Respiratory Failure
  • Acute Copd Exacerbation

Keywords

  • High Flow Nasal Cannula
  • High Flow Nasal Insufflation
  • High Flow Oxygen Therapy
  • High Flow Oxygenation
03

In context

Respiratory Insufficiency

1,650 studies on the registry are indexed under Respiratory Insufficiency; 296 are open to participants now.

This study's planned enrollment of 84 is above the median of 55 across 1,043 interventional studies indexed under Respiratory Insufficiency.

Browse Respiratory Insufficiency studies →

Lead sponsor

Hôpital de Verdun is the lead sponsor of 4 studies on the registry; none are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Adult patients > 18 years of age
  • Acute Hypercapnic respiratory failure with pH \< 7.35 and pCO2 > 45 mmHg

Exclusion criteria

Exclusion Criteria:

  • Pregnant or Breast-Feeding
  • Patients who cannot read and understand French or English
  • Hypercapnia secondary to a drug toxicity or non-pulmonary aetiology
  • Hypercapnia secondary to exacerbation of asthma
  • Contraindication to NIV
  • Contraindication to HFNC
  • Not for escalation to NIV based on a ceiling of care
  • pH \< 7.15
  • GCS 8 or less
  • Shock defined as systolic \< 90 mmHg or a reduction by 20mmHg from usual systolic BP despite volume resuscitation
  • Respiratory or cardio-respiratory arrest
  • Any other indication that requires immediate invasive/non-invasive mechanical ventilation
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Outcomes assessor)
Enrollment
84 participants (estimated)

Study arms

  • Experimental
    High Flow Nasal Cannula

    Device: High flow nasal cannula

  • Active comparator
    Conventional Oxygenation with low flow cannula

    Device: Conventional low flow oxygenation

Interventions

  • DeviceHigh flow nasal cannula

    HFNC with the maximum tolerated flow (up to 60 L/min). Titration of supplemental oxygen to a SpO2 between 88 - 92%.

    Also known as: High flow oxygenation, High flow oxygen therapy

  • DeviceConventional low flow oxygenation

    Conventional oxygenation through nasal prongs or a facemask, with supplemental oxygen titrated to a SpO2 between 88 - 92%.

06

What researchers measure

Primary outcomes

  1. Proportion of patients progressing to NIV in each cohort

    Time frame: 6 hours

Secondary outcomes

  1. Venous blood gas PCO2

    Time frame: 1 hour, 6 hours, and 24 hours

  2. Venous blood gas pH

    Time frame: 1 hour, 6 hours, and 24 hours

  3. Respiratory rate

    Number of breaths per minute, as documented in the medical chart

    Time frame: 1 hour, 6 hours, 24 hours, and daily until study completion

  4. Heart rate

    Number of heart beats per minute, as documented in the medical chart

    Time frame: 1 hour, 6 hours, 24 hours, and daily until study completion

  5. Mean arterial pressure

    Mean arterial pressure, as documented in the medical chart

    Time frame: 1 hour, 6 hours, 24 hours, and daily until study completion

  6. Incidence of intubation

    Time frame: Up to 90 days after enrolment, or until hospital discharge

  7. Admission to the intensive care unit

    Time frame: Up to 90 days after enrolment, or until hospital discharge

  8. In-hospital mortality

    Time frame: Up to 90 days after enrolment, or until hospital discharge

  9. Intensive care unit length of stay

    Time frame: Up to 90 days after enrolment, or until discharge from the intensive care unit

  10. Hospital length of stay

    Time frame: Up to 90 days after enrolment, or until hospital discharge

  11. Patient comfort

    Level of comfort assessed on a visual analogue scale by the patient

    Time frame: 1 hour, 6 hours, 24 hours, and daily until cessation of oxygen therapy, up to a maximum of 7 days

  12. Shortness of breath

    Severity of the shortness of breath assessed on a visual analogue scale by the patient

    Time frame: 1 hour, 6 hours, 24 hours, and daily until cessation of oxygen therapy, up to a maximum of 7 days

07

Study locations

3 sites
  • CISSS-de-la-Montérégie-Centre
    Longueuil, Quebec J4V 2H2, Canada
    • Valérie Langlois-Carbonneau, M.D. · Contact
  • CIUSSS de l'Est-de-l'ïle-de-Montréal
    Montréal, Quebec H1T 2M4, Canada
    • Massimiliano Iseppon, M.D. · Contact
  • Hôpital de Verdun
    Montréal, Quebec H4G2A2, Canada
08

References and documents

Individual participant data

Plan to share: Yes — Data may be shared to researchers who will request it, based on reasonable research objectives, ethical approval if needed, and signing of a data sharing agreement by the relevant institutions.

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Aug 11, 2022, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05497986
Lead sponsor
Hôpital de Verdun
Responsible party
Sponsor
First posted
Aug 11, 2022
Start date
Oct 2022 (estimated)
Primary completion
Jan 2024 (estimated)
Completion
Jul 2024 (estimated)
Last update
Aug 11, 2022

Study contacts

Ivan Pavlov, M.D
Contact
ivan.pavlov.md@gmail.com
514-362-1000 ext. 63525
Ivan Pavlov, M.D.
principal investigator · CIUSSS-Centre-Sud-de-l'Île-de-Montréal

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is status unknown, as verified in Aug 2022. You cannot join it, but the record below documents what was studied.

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