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CompletedNCT03516175PRIOR2Updated Dec 10, 2020

Pre-oxygenation With High-flow Nasal Cannula in Adults During Rapid Sequence Induction Anesthesia

An interventional study of High flow transnasal oxygen and Pre oxygenation using tight fitting facemask in Anesthesia, Hypoxia and Surgery, sponsored by Karolinska University Hospital. Completed at 6 sites in 2 countries. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2020-12-10.

Sponsored by Karolinska University Hospital · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
350
Allocation
Randomized
Ages
18 Years and older
Sex
All
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Study summary

It has been demonstrated that Transnasal Humidified Rapid Insufflation Ventilatory Exchange used during preoxygenation for emergency surgery is at least equally effective as preoxygenation compared to standard tight fitting mask. Data from a recent study indicates that Transnasal Humidified Rapid Insufflation Ventilatory Exchange might decrease the risk of clinically relevant desaturation below 93% of arterial oxygen saturation. The limitations with our previous study is that it was done only during office hours (Mon-Friday 8 am to 4 pm) and that the power to detect the occurrence of desaturation was too low.

Based on the above, the aim is now to conduct a clinical international multicenter study 24/7 with 450 patients and with a simplified protocol that allows the study to be done 24/7. This study is done with the aim of evaluation before implementing this novel technique of preoxygenation into clinical practice.

The general purpose of this project is to compare a the preoxygenation technique based on Transnasal Humidified Rapid Insufflation Ventilatory Exchange with traditional preoxygenation with a tight fitting mask during rapid sequence induction (RSI) intubation in patients undergoing emergency surgery.

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Conditions studied

  • Anesthesia
  • Hypoxia
  • Surgery
  • Acute

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In context

Hypoxia

1,231 studies on the registry are indexed under Hypoxia; 241 are open to participants now.

This study's enrollment of 350 is above the median of 45 across 853 interventional studies indexed under Hypoxia.

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Lead sponsor

Karolinska University Hospital is the lead sponsor of 275 studies on the registry; 54 are open to participants now.

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

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Who can participate

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

Inclusion criteria

  1. Adult, >18 years old
  2. Emergency intubation where Rapid Sequence Induction is indicated
  3. Capable of understanding the study information and signing the written consent.

Exclusion criteria

Exclusion Criteria:

  1. Body Mass Index >35
  2. Pregnancy
  3. Dependency on non-invasive ventilation to maintain oxygen saturation
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Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
350 participants (actual)

Study arms

  • Active comparator
    Tight fitting mask

    Pre oxygenation with tight facemask with 100% oxygen

    Device: Pre oxygenation using tight fitting facemask

  • Experimental
    High flow nasal oxygen

    High flow nasal oxygen that is Transnasal Humidified Rapid Insufflation Ventilatory Exchange is used for pre oxygenation

    Device: High flow transnasal oxygen

Interventions

  • DeviceHigh flow transnasal oxygen

    High flow nasal oxygen that is Transnasal Humidified Rapid Insufflation Ventilatory Exchange

    Also known as: Transnasal Humidified Rapid Insufflation Ventilatory Exchange

  • DevicePre oxygenation using tight fitting facemask

    100% oxygen via a tight fitting facemask

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What researchers measure

Primary outcomes

  1. The number of patients that desaturates below 93% in SpO2 during pre oxygenation up to 1 minute after intubation

    The number of patients that desaturates below 93% in SpO2 during pre oxygenation up to 1 minute after intubation

    Time frame: From start of anaesthesia until 1 minute after tracheal intubation, that is normally after 3-4 minutes after anaesthesia induction

Secondary outcomes

  1. Lowest SpO2 during preoxygenation using THRIVE compared to traditional pre-oxygenation from time to first anesthetic drug given up to 1 minute after intubation.

    Lowest SpO2 during preoxygenation using THRIVE compared to traditional pre-oxygenation from time to first anesthetic drug given up to 1 minute after intubation.

    Time frame: From start of anaesthesia until 1 minute after tracheal intubation, that is normally after 3-4 minutes after anaesthesia induction

  2. Level of end-tidal carbon dioxide in the first breath after intubation with Transnasal Humidified Rapid Insufflation Ventilatory Exchange oxygenation compared with traditional pre-oxygenation?

    Level of end-tidal carbon dioxide in the first breath after intubation with Transnasal Humidified Rapid Insufflation Ventilatory Exchange oxygenation compared with traditional pre-oxygenation?

    Time frame: At the first breath after tracheal intubation that is usually 2-4 minutes after induction of anaesthesia

  3. Level of end-tidal O2 in the first breath after intubation with Transnasal Humidified Rapid Insufflation Ventilatory Exchange oxygenation compared with traditional pre-oxygenation?

    Level of end-tidal O2 in the first breath after intubation with Transnasal Humidified Rapid Insufflation Ventilatory Exchange oxygenation compared with traditional pre-oxygenation?

    Time frame: At the first breath after tracheal intubation that is usually 2-4 minutes after induction of anaesthesia

  4. Incidence of gastric regurgitation between the groups?

    Incidence of gastric regurgitation between the groups?

    Time frame: From start of anaesthesia until 2 minutes after tracheal intubation, that is normally after 4-5 minutes after anaesthesia induction

  5. Difference in numbers of patients being ventilated between the two groups?

    Is there a difference in the number of patients that was ventilated before intubation between the two study groups?

    Time frame: From start of anaesthesia until the patient is intubated, usually within 3-4 minutes

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Study locations

6 sites
  • Centralsjukhuset Karlstad
    Karlstad, Sweden
  • Linköping University Hospital
    Linköping, Sweden
  • Karolinska University Hospital
    Stockholm, Sweden
  • St Göran Hospital
    Stockholm, Sweden
  • Södersjukhuset
    Stockholm, Sweden
  • University Hospital of Bern
    Bern, Switzerland
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References and documents

Individual participant data

Plan to share: Undecided

No publications or documents are linked to this record.

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Dec 10, 2020, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT03516175
Lead sponsor
Karolinska University Hospital
Collaborators
St. George's Hospital, London, University College London Hospitals, Poole Hospital NHS Foundation Trust
Responsible party
Malin Jonsson Fagerlund (Senior Consultant, Associate Professor, Karolinska University Hospital) — Principal investigator
First posted
May 4, 2018
Start date
Mar 21, 2018
Primary completion
Oct 28, 2020
Completion
Oct 28, 2020
Last update
Dec 10, 2020

Study contacts

Malin Jonsson Fagerlund
principal investigator · Karolinska University Hospital and Karolinska Institutet

Oversight

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

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This study is completed, as verified in Dec 2020. You cannot join it, but the record below documents what was studied.

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