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CompletedNCT02518828HiLoUpdated Nov 6, 2018

High Versus Low SpO2 Oxygen Therapy in Patients With Acute Heart Failure

An interventional study of High SpO2 and Low SpO2 in Heart Failure, sponsored by University of Alberta. Completed at 1 site in Canada. Open to participants aged 40 Years and older. Per ClinicalTrials.gov, last updated 2018-11-06.

Sponsored by University of Alberta · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
50
Allocation
Randomized
Ages
40 Years and older
Sex
All
01

Study summary

The primary objective of this pilot trial is to determine whether inpatients presenting to the Emergency Department (ED) with symptoms suggestive of Acute Heart Failure (AHF), who receive supplemental oxygen adjusted at either a high (SpO2 range ≥96%) or low (SpO2 range 90-92%) oxygen saturation level, leads to greater reduction in N-terminal-proBNP (NT-proBNP) at 72 hours.

Read the detailed description

Patients will be randomized to either a high (SpO2 range ≥96%) or low (SpO2 range 90-92%) oxygen after informed consent.

02

Conditions studied

  • Heart Failure

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Keywords

  • Acute Heart Failure
03

In context

Heart Failure

5,701 studies on the registry are indexed under Heart Failure; 1,220 are open to participants now.

This study's enrollment of 50 is below the median of 72 across 3,736 interventional studies indexed under Heart Failure.

Browse Heart Failure studies →

Lead sponsor

University of Alberta is the lead sponsor of 800 studies on the registry; 168 are open to participants now.

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

04

Who can participate

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

Inclusion criteria

  • >40 years of age presenting to the ED with AHF
  • objective finding of HF (BNP >400 pg/ml or Chest X-Ray with pulmonary congestion)
  • plan to admit with primary diagnosis as HF
  • must be able to be randomized within 16 hours of presenting to the ED
  • provided written informed consent

Exclusion criteria

Exclusion Criteria:

  • on home oxygen
  • known prior hypercapnic failure (PaCO2 >50 mmHg)
  • asthma
  • primary pulmonary hypertension,
  • patients who require urgent positive pressure ventilation or intubation
  • patients on >10 L/min oxygen
05

Study design

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

Study arms

  • Active comparator
    High SpO2

    In the high SpO2 set-point arm, patients will have a nasal cannula placed and will be manually titrated to SpO2 range ≥96%

    Other: High SpO2

  • Active comparator
    Low SpO2

    In the low SpO2 set-point arm, patients will have a nasal cannula placed and will be manually titrated to SpO2 range 90-92%

    Other: Low SpO2

Interventions

  • OtherHigh SpO2

    SpO2 range ≥96%

  • OtherLow SpO2

    SpO2 range 90-92%

06

What researchers measure

Primary outcomes

  1. Change in NT-proBNP from baseline to 72 hours

    Time frame: 72 hours

Secondary outcomes

  1. Change in dyspnea using the visual analog scale (VAS) from baseline to 72 hours

    Time frame: 72 hours

  2. Change in global symptoms using the Patient Global Assessment scale (PGA) from baseline to 72 hours

    Time frame: 72 hours

  3. Change in Peak Expiratory Flow Rate (PEFR) from baseline to 72 hours

    Time frame: 72 hours

  4. Number of worsening heart failure (WHF) events

    Time frame: 7 days

  5. 30-day clinical events

    All cause mortality, HF readmission, days alive and out of hospital

    Time frame: 30 days

  6. Average z-score from the combination of these outcomes: PGA, NT-proBNP, 7-day WHF, 30-day mortality and re-hospitalization

    Time frame: 30 days

  7. Hochberg endpoint (combination of NT-proBNP and PGA)

    Time frame: 72 hours

  8. Diuretic response (weight loss up to 72 hours and urine volume up to 24 hours)

    Time frame: 72 hours

Other outcomes

  1. Safety Outcome - Need for mechanical ventilation (invasive and non-invasive

    Number of participants with post-enrollment respiratory failure with a need for mechanical ventilation as assessed by CTCAE v4.0

    Time frame: 7 days

07

Study locations

1 site
  • University of Alberta Hospital / Mazankowski Alberta Heart Institute
    Edmonton, Alberta, Canada
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Nov 6, 2018, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT02518828
Lead sponsor
University of Alberta
Collaborators
Heart and Stroke Foundation of Canada, Alberta Innovates Health Solutions
Responsible party
Sponsor
First posted
Aug 10, 2015
Start date
Jan 2017
Primary completion
Jul 2018
Completion
Jul 2018
Last update
Nov 6, 2018

Study contacts

Justin Ezekowitz, MBBCH
principal investigator · University of Alberta

Oversight

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

Not currently enrolling

This study is completed, as verified in Nov 2017. You cannot join it, but the record below documents what was studied.

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