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Study of High-flow Oxygen Therapy Against Standard Therapy in Bronchiolitis (Hi-Flo)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT01498094
Recruitment Status : Completed
First Posted : December 23, 2011
Last Update Posted : May 12, 2015
Information provided by (Responsible Party):
University of British Columbia

Brief Summary:
Bronchiolitis is a common illness of the respiratory tract caused by infection of the tiny airways within the lungs called bronchioles. At present the standard care of hospitalized children with bronchiolitis is oxygen via nasal prongs. In this study the investigators would like to compare standard ward management with a new method of delivering oxygen called high flow nasal cannula oxygen therapy (HFNOT). HFNOT involves breathing warmed, moistened oxygen through nasal cannulae at a flow rate of 8 liters/minute. Accumulated experience suggests that HFNOT eases the child's work of breathing and reduces need for ICU admission and invasive respiratory support.

Condition or disease Intervention/treatment Phase
Bronchiolitis Procedure: High Flow Nasal Cannula Oxygen Therapy Other: Standard low flow oxygen Not Applicable

Detailed Description:

We propose a prospective open randomised controlled trial to compare high flow nasal cannula oxygen therapy (HFNOT) with standard oxygen therapy for infants hospitalised with bronchiolitis. This study will be the first of its kind, as currently there is no evidence in the published literature.

All children will be cared for by the same medical team on two wards. All aspects of care other than oxygen delivery will not be specified, and be at the discretion of the physicians. HFNOT will not be used as an escalation of care on the wards.

Randomisation will be performed by REDcap, in blocks of 6 patients. Patients will be identified in Emergency, informed consent obtained, and treatment started prior to transfer to the ward.

For patients randomised to HFNOT, the flow rate will be fixed at 8 liters/minute, and the inspired oxygen concentration titrated to maintain saturations above 92%.

Interim statistical analysis will be conducted to determine any positive or negative effect of HFNOT therapy. The first interval analysis will be performed after 50 subjects, the second after 100 subjects. If an effect is found, the study will be terminated following discussion with the hospital statistician and ethics board. Whichever treatment arm is found to be beneficial will be instituted as standard care for children with bronchiolitis.

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 79 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: A Prospective Open Randomized Clinical Trial Comparing High Flow Nasal Cannula Oxygen Therapy Against Standard Therapy for Children Hospitalized With Bronchiolitis
Study Start Date : December 2011
Actual Primary Completion Date : July 2014
Actual Study Completion Date : December 2014

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Oxygen Therapy

Arm Intervention/treatment
Active Comparator: Control
Standard low-flow oxygen therapy.
Other: Standard low flow oxygen
Standard low flow oxygen will be given to patients to maintain saturations greater than 92%.

Experimental: Intervention
High Flow Nasal Cannula Oxygen Therapy
Procedure: High Flow Nasal Cannula Oxygen Therapy
Warm humidified oxygen will be delivered at 8 liters/minute via nasal cannulae, at a concentration that maintains saturations greater than 92%.
Other Name: High flow oxygen therapy

Primary Outcome Measures :
  1. Length of hospital stay [ Time Frame: Expected average length of stay 5 days ]
    Number of hours that the patient remains in hospital.

Secondary Outcome Measures :
  1. Admission to Intensive Care Unit [ Time Frame: During hospitalisation for bronchiolitis, expected average 5 days ]
    Yes or No

  2. Work of breathing [ Time Frame: During hospital stay, expected average 5 days ]
    Work of breathing, assessed by respiratory rate, at four timepoints on day one, and daily thereafter

Information from the National Library of Medicine

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Ages Eligible for Study:   up to 18 Months   (Child)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • All children under 18 months of age with a clinical diagnosis of bronchiolitis requiring admission to hospital for observation and oxygen.

Exclusion Criteria:

  • Infants admitted directly to ICU from Emergency.
  • Prior positive pressure home ventilation.
  • Tracheostomy.
  • Nasogastric tubes in situ on admission.
  • Upper airway abnormality.
  • Congenital heart disease.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT01498094

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Canada, British Columbia
British Columbia Children's Hospital
Vancouver, British Columbia, Canada, V6H 3N1
Sponsors and Collaborators
University of British Columbia
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Principal Investigator: David Wensley, MD British Columbia Children's Hospital
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Responsible Party: University of British Columbia Identifier: NCT01498094    
Other Study ID Numbers: H11-03032
First Posted: December 23, 2011    Key Record Dates
Last Update Posted: May 12, 2015
Last Verified: May 2015
Keywords provided by University of British Columbia:
Additional relevant MeSH terms:
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Respiratory Tract Infections
Bronchial Diseases
Respiratory Tract Diseases
Lung Diseases, Obstructive
Lung Diseases