CClinicalTrials.gg
Not yet recruitingNCT04728412BroncHoFlowUpdated Feb 13, 2024

High Flow Oxygen Therapy in Patients Undergoing Bronchoscopy Under Sedation

An interventional study of High Flow Oxygen Therapy (HFOT) in Respiratory Failure and Hypercapnic Acidosis, sponsored by Cardarelli Hospital. Not yet recruiting at 1 site in Italy. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2024-02-13.

Sponsored by Cardarelli Hospital · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Primary completion was expected by Sep 2025, 1 year ago, but the record still lists the study as not yet recruiting.
Phase
Not applicable
Study type
Interventional
Enrollment
100
Allocation
Not applicable
Ages
18 Years and older
Sex
All
01

Study summary

A reduction of peripheral oxygen saturation (SpO2) commonly occurs during bronchoscopy and may be associated with both respiratory and cardiac adverse events. The type of breathing assistance that should be delivered to patients, in order to treat and/or to prevent acute respiratory failure, during or after bronchoscopy, is not universally standardized; studies comparing the impact of different respiratory supports on patient's outcome and on hospital resource use are very few. the risk of respiratory failure rises according to the type of procedure (i.e., increased risk with broncho-alveolar lavage and trans-bronchial lung biopsy) and to the use of sedative drugs. Conventional oxygen therapy with nasal cannula, continuous positive airway pressure and non-invasive ventilation are commonly applied during endoscopic procedures. High flow oxygen therapy (HFOT) is a relatively novel device, still under-used in the context of interventional pulmonology, providing an humidified air-oxygen blend up to 60 L/min. HFOT has been reported to be effective for the treatment of both hypoxemic and hypercapnic respiratory failure. The investigators hypothesize that HFOT could be feasible and safe in patients undergoing bronchoscopy under moderate sedation, affected by or at risk of hypoxemic and/or hypercapnic respiratory failure.

02

Conditions studied

  • Respiratory Failure
  • Hypercapnic Acidosis

Keywords

  • bronchoscopy
  • sedation
  • high flow oxygen therapy
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 100 is above the median of 55 across 1,043 interventional studies indexed under Respiratory Insufficiency.

Browse Respiratory Insufficiency studies →

Lead sponsor

Cardarelli Hospital is the lead sponsor of 8 studies on the registry; 5 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

  • pH ≥7.30 e PaCO2 >45 mmHg and/or
  • PaO2/FiO2 \<300 mmHg o SpO2 \<90 percent on room air
  • Patient at risk of respiratory failure (COPD III-IV GOLD stage; OSAS; restrictive lung and chest wall diseases; cardiac failure)

Exclusion criteria

Exclusion Criteria:

  • Need of laryngeal mask and/or
  • Patients on NIV for >16 hrs/day and/or
  • pH \<7.30 and/or
  • Tracheostomy and/or
  • Recent (\<3 months) facial trauma and/or
  • Hemodynamic instability and/or
  • High risk of aspiration and/or
  • Lacerated trachea
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
100 participants (estimated)

Study arms

  • Experimental
    patients undergoing bronchoscopy under sedation with or at risk of respiratory failure

    Device: High Flow Oxygen Therapy (HFOT)

Interventions

  • DeviceHigh Flow Oxygen Therapy (HFOT)

    HFOT administration in patients undergoing bronchoscopy under moderate sedation, affected by or at risk of hypoxemic and/or hypercapnic respiratory failure.

06

What researchers measure

Primary outcomes

  1. Number of desaturation, defined as SpO2< 90 percent percent for >1 min, <5.

    Time frame: one year

  2. Percent of variation of pH, comparing ABG performed before bronchoscopy with that performed before partecipant's transferral to recovery room.

    Time frame: one year

  3. Percent of variation of PaCO2 variation, comparing ABG performed before bronchoscopy with that performed before partecipant's transferral to recovery room.

    Time frame: one year

  4. Rate of interruption of bronchoscopy because of number of desaturation, defined as SpO2< 90 percent for >1 min, >5.

    Time frame: one year

  5. Number of partecipants requiring an escalation of respiratory support.

    Time frame: one year

  6. Rate of new appearance of hemodynamic instability.

    Time frame: one year

Secondary outcomes

  1. value of Charlson Comobidity Index associated with HFOT failure.

    Time frame: one year

  2. value of Body Mass Index associated with HFOT failure.

    Time frame: one year

  3. value of Borg dyspnea scale associated with HFOT failure.

    Time frame: one year

  4. Number of desaturations, defined as SpO2< 90 percent for >1 min.

    Time frame: one year

  5. Lowest oxygen saturation under HFOT.

    Time frame: one year

  6. Rate of change of HFOT parameters because of desaturation without respiratory acidosis.

    Time frame: one year

  7. Rate of change of HFOT parameters because of desaturation with respiratory acidosis

    Time frame: one year

07

Study locations

1 site
  • Giuseppe Failla, MD
    Naples, 80131, Italy
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Feb 13, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT04728412
Lead sponsor
Cardarelli Hospital
Responsible party
Giuseppe Failla (Chief of Interventional Pulmonology Unit, Cardarelli Hospital) — Principal investigator
First posted
Jan 28, 2021
Start date
Sep 1, 2024 (estimated)
Primary completion
Sep 30, 2025 (estimated)
Completion
Dec 30, 2025 (estimated)
Last update
Feb 13, 2024

Oversight

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

Not currently enrolling

This study is not yet recruiting, as verified in Feb 2024. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion