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Acute Respiratory Distress SyndromeEARLNCT04156438

Airway Pressure Release Ventilation for Moderate-to-severe Acute Respiratory Distress Syndrome

A study testing Low tidal volume ventilation and Airway pressure release ventilation in people with Acute Respiratory Distress Syndrome, run by Saskatchewan Health Authority - Regina Area at 1 site in Canada.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

This study will examine the feasibility of a large clinical trial investigating the effectiveness of airway pressure release ventilation and low tidal volume ventilation for patients with moderate-to-severe acute respiratory distress syndrome. Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Acute Respiratory Distress Syndrome
What is being tested?
Low tidal volume ventilation and Airway pressure release ventilation
Type of treatment
Medical device
Could I receive a placebo?
No, everyone receives an active treatment
How many people
1 participants
Where
1 siteCanada
Study dates
29 Jun 2020to 31 Dec 2021
Phase
Interventional
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Fulfilling the diagnostic criteria of ARDS, according to the Berlin definition
  • Moderate to severe ARDS as defined as a PaO2: FiO2 ratio of ≤150 during invasive mechanical ventilation
  • Endotracheal intubation and mechanical ventilation for ARDS less than 48 hours

Who cannot join

  • Age less than 18 years
  • Pregnancy
  • Intracranial hypertension (suspected or confirmed)
  • Severe chronic obstructive pulmonary disease as defined by either:
  • FEV1/FVC less than 50% predicted, or
  • Chronic hypercarbia (PaCO2>45 mmHg), chronic hypoxemia (PaO2 < 55 mmHg) on room air, and/or elevated admission serum HCO3 >30 mmol/L
Show all 11Show fewer
  • Presence of documented barotrauma, i.e. pneumothorax
  • Treatment with extracorporeal support (ECMO) at enrollment
  • Refractory shock
  • Advanced directives indicating preferences to not have advanced life support
  • Moribund patient, i.e. not expected to survive longer than 24 hours

Trial locations and contacts

1 site in 1 country.

Canada1 site
  • Regina General Hospital

    Regina, Saskatchewan, S4P 0W5

Other trials in Canada

About this study

Official title: Early Use of Airway Pressure ReLease Ventilation in Critically Ill Adults With Moderate-to-severe Acute Respiratory Distress Syndrome

This study will examine the feasibility of a large clinical trial investigating the effectiveness of airway pressure release ventilation and low tidal volume ventilation for patients with moderate-to-severe acute respiratory distress syndrome.

Read the detailed description

Acute respiratory distress syndrome (ARDS) is a disease that has an incidence of 5% of hospitalized mechanically ventilated patients. ARDS is associated with high morbidity and mortality in critically ill patients, with mortality reported as high as 45% in severe ARDS. Patients who develop ARDS will require mechanical ventilation. Patients with ARDS are graded by the partial pressure of oxygen to fraction of inspired oxygen ratio (PaO2/FiO2) into three categories of severity: mild (PaO2/FiO2 201-300 mm Hg), moderate (PaO2/FiO2 101-200 mmHg), and severe (PaO2/FiO2 ≤ 100).

Volutrauma and barotrauma are thought to contribute to the development of ARDS and alter mortality. The damage that occurs to the lungs manifests itself as inflammation, which leads to poor gas exchange of oxygen and carbon dioxide. Several strategies of lung-protective mechanical ventilation have been investigated in ARDS, including the use of low tidal volume ventilation (LTVV) or ARDSNet strategy, high frequency oscillation ventilation (HFOV), and airway pressure release ventilation (APRV). Lung protective strategies may be best beneficial prior to the onset of the development of ARDS or early in the course of the disease. As a result of the ARDSNet trial, LTVV has been adopted as the usual standard of care of ventilation and safest mode of ventilation for patients with ARDS.

Recently, APRV has been proposed as a potential alternative to LTVV. APRV is a form of ventilation that keeps the lungs inflated through the majority of the breath cycle and allows patients to breathe spontaneously above this level of inflation. APRV allows for spontaneous respiration with increased airway pressure, potentially allowing for decreased sedation, shorter duration of mechanical ventilation, and decreased need for vasopressors. APRV has been associated with possible reduction in incidence of ARDS and in-hospital mortality in non-randomized observational studies. In patients with established ARDS, the use of APRV has also not been well studied, with most studies limited to small observational studies often with no comparison group. One randomized trial using APRV alone had less than 30% of patients having a diagnosis of ARDS and did not show any difference in any outcomes. Recently, Zhou and colleagues conducted a randomized trial comparing APRV to conventional ventilation in 138 mechanically ventilated patients with mild to severe ARDS and found that APRV may shorten the duration of mechanical ventilation and reduce intensive care unit (ICU) length of stay.

While some of these studies had shown promise of APRV compared to LTVV, there has not been acceptance of APRV into guidelines as first line ventilation, and recommendations of institutions such as the Canadian Agency for Drugs and Technology in Health (CADTH) recommends interpreting these results with caution. Consequently, there remains clinical equipoise on this issue. Some ICU clinicians will currently use APRV as a rescue mode of ventilation in ARDS in their clinical practice while others will continue with the use of LTVV. We would like to randomize patients to LTVV or APRV and examine the feasibility of conducting a large multicentre randomized controlled trial in Canada.

Being tested
Low tidal volume ventilation, Airway pressure release ventilation
Keywords
Airway pressure release ventilation, low tidal volume ventilation, APRV, ARDSNet ventilation, LTVV, acute respiratory distress syndrome, ARDS
Medical subject headings
Respiratory Distress Syndrome

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Low tidal volume ventilationDevice

    Conventional ventilation strategy for patient with ARDS

  • Airway pressure release ventilationDevice

    Experimental ventilation protocol for patients with ARDS

Study groups in NCT04156438
Study groupRoleWhat they receive
Low tidal volume ventilationActive comparatorConventional low tidal volume ventilation
Receives: Device: Low tidal volume ventilation
Airway pressure release ventilationExperimentalEarly use of airway pressure release ventilation
Receives: Device: Airway pressure release ventilation

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Informed consent rate

    A successful informed consent rate will be defined as ≥70% of substitute decision makers or patients approached choosing to participate in this trial

    Measured: Informed consent rate will be measured over a 1 year period of the pilot study

  2. Recruitment rate

    A successful recruitment rate will be achieving at least 15 patients over the 1 year period.

    Measured: Recruitment rate will be measured over the one year of the pilot study.

  3. Protocol adherence rate

    An adherence rate of at least 80% will be considered successful.

    Measured: Protocol adherence will be measured for each study patient, and compiled over the duration of the pilot study (i.e. 1 year).

Secondary outcomes (6)
  1. 28-day mortality

    Death, measured from time of enrollment until 28 days.

    Measured: Up to Day 28

  2. In-hospital mortality

    Death, at hospital discharge

    Measured: Up to 365 days

  3. ICU length of stay

    Length of stay in the intensive care unit

    Measured: Up to 365 days

  4. Hospital length of stay

    Length of stay in the hospital in days

    Measured: Up to 365 days

  5. Length/duration of mechanical ventilation

    Length of time patient was on mechanical ventilation

    Measured: Up to 365 days

  6. Incidence of tracheostomy

    Incidence of tracheostomy during their ICU stay

    Measured: Up to 365 days

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted7 Nov 2019
  2. Study start29 Jun 2020
  3. Primary completion31 Dec 2021
  4. Study completion31 Dec 2021

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
None (open label)
Enrolment
1 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT04156438
Sponsor's protocol ID
REB-19-51
Acronym
EARL
Status last verified
Jan 2022
First submitted
26 Oct 2019
Last updated
28 Jan 2022
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Publications

  • ARDS Definition Task Force; Ranieri VM, Rubenfeld GD, Thompson BT, Ferguson ND, Caldwell E, Fan E, Camporota L, Slutsky AS. Acute respiratory distress syndrome: the Berlin Definition. JAMA. 2012 Jun 20;307(23):2526-33. doi: 10.1001/jama.2012.5669.

    PubMed 22797452
  • Walkey AJ, Summer R, Ho V, Alkana P. Acute respiratory distress syndrome: epidemiology and management approaches. Clin Epidemiol. 2012;4:159-69. doi: 10.2147/CLEP.S28800. Epub 2012 Jul 16.

    PubMed 22866017
  • Gattinoni L, Pesenti A. The concept of "baby lung". Intensive Care Med. 2005 Jun;31(6):776-84. doi: 10.1007/s00134-005-2627-z. Epub 2005 Apr 6.

    PubMed 15812622
  • de Haro C, Martin-Loeches I, Torrents E, Artigas A. Acute respiratory distress syndrome: prevention and early recognition. Ann Intensive Care. 2013 Apr 24;3(1):11. doi: 10.1186/2110-5820-3-11.

    PubMed 23617961
  • Acute Respiratory Distress Syndrome Network; Brower RG, Matthay MA, Morris A, Schoenfeld D, Thompson BT, Wheeler A. Ventilation with lower tidal volumes as compared with traditional tidal volumes for acute lung injury and the acute respiratory distress syndrome. N Engl J Med. 2000 May 4;342(18):1301-8. doi: 10.1056/NEJM200005043421801.

    PubMed 10793162
  • Ferguson ND, Cook DJ, Guyatt GH, Mehta S, Hand L, Austin P, Zhou Q, Matte A, Walter SD, Lamontagne F, Granton JT, Arabi YM, Arroliga AC, Stewart TE, Slutsky AS, Meade MO; OSCILLATE Trial Investigators; Canadian Critical Care Trials Group. High-frequency oscillation in early acute respiratory distress syndrome. N Engl J Med. 2013 Feb 28;368(9):795-805. doi: 10.1056/NEJMoa1215554. Epub 2013 Jan 22.

    PubMed 23339639
  • Young D, Lamb SE, Shah S, MacKenzie I, Tunnicliffe W, Lall R, Rowan K, Cuthbertson BH; OSCAR Study Group. High-frequency oscillation for acute respiratory distress syndrome. N Engl J Med. 2013 Feb 28;368(9):806-13. doi: 10.1056/NEJMoa1215716. Epub 2013 Jan 22.

    PubMed 23339638
  • Jain SV, Kollisch-Singule M, Sadowitz B, Dombert L, Satalin J, Andrews P, Gatto LA, Nieman GF, Habashi NM. The 30-year evolution of airway pressure release ventilation (APRV). Intensive Care Med Exp. 2016 Dec;4(1):11. doi: 10.1186/s40635-016-0085-2. Epub 2016 May 20.

    PubMed 27207149
  • Andrews PL, Shiber JR, Jaruga-Killeen E, Roy S, Sadowitz B, O'Toole RV, Gatto LA, Nieman GF, Scalea T, Habashi NM. Early application of airway pressure release ventilation may reduce mortality in high-risk trauma patients: a systematic review of observational trauma ARDS literature. J Trauma Acute Care Surg. 2013 Oct;75(4):635-41. doi: 10.1097/TA.0b013e31829d3504.

    PubMed 24064877
  • Futier E, Constantin JM, Paugam-Burtz C, Pascal J, Eurin M, Neuschwander A, Marret E, Beaussier M, Gutton C, Lefrant JY, Allaouchiche B, Verzilli D, Leone M, De Jong A, Bazin JE, Pereira B, Jaber S; IMPROVE Study Group. A trial of intraoperative low-tidal-volume ventilation in abdominal surgery. N Engl J Med. 2013 Aug 1;369(5):428-37. doi: 10.1056/NEJMoa1301082.

    PubMed 23902482
  • Serpa Neto A, Cardoso SO, Manetta JA, Pereira VG, Esposito DC, Pasqualucci Mde O, Damasceno MC, Schultz MJ. Association between use of lung-protective ventilation with lower tidal volumes and clinical outcomes among patients without acute respiratory distress syndrome: a meta-analysis. JAMA. 2012 Oct 24;308(16):1651-9. doi: 10.1001/jama.2012.13730.

    PubMed 23093163
  • Maxwell RA, Green JM, Waldrop J, Dart BW, Smith PW, Brooks D, Lewis PL, Barker DE. A randomized prospective trial of airway pressure release ventilation and low tidal volume ventilation in adult trauma patients with acute respiratory failure. J Trauma. 2010 Sep;69(3):501-10; discussion 511. doi: 10.1097/TA.0b013e3181e75961.

    PubMed 20838119
  • Bellani G, Laffey JG, Pham T, Fan E, Brochard L, Esteban A, Gattinoni L, van Haren F, Larsson A, McAuley DF, Ranieri M, Rubenfeld G, Thompson BT, Wrigge H, Slutsky AS, Pesenti A; LUNG SAFE Investigators; ESICM Trials Group. Epidemiology, Patterns of Care, and Mortality for Patients With Acute Respiratory Distress Syndrome in Intensive Care Units in 50 Countries. JAMA. 2016 Feb 23;315(8):788-800. doi: 10.1001/jama.2016.0291.

    PubMed 26903337
  • Habashi NM. Other approaches to open-lung ventilation: airway pressure release ventilation. Crit Care Med. 2005 Mar;33(3 Suppl):S228-40. doi: 10.1097/01.ccm.0000155920.11893.37.

    PubMed 15753733
  • Lim J, Litton E, Robinson H, Das Gupta M. Characteristics and outcomes of patients treated with airway pressure release ventilation for acute respiratory distress syndrome: A retrospective observational study. J Crit Care. 2016 Aug;34:154-9. doi: 10.1016/j.jcrc.2016.03.002. Epub 2016 Mar 9.

    PubMed 27020770

Questions about this trial

What is this clinical trial studying?

A study testing Low tidal volume ventilation and Airway pressure release ventilation in people with Acute Respiratory Distress Syndrome, run by Saskatchewan Health Authority - Regina Area at 1 site in Canada.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 3 inclusion and 11 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 28 Jan 2022. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Canada. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Informed consent rate (time frame: Informed consent rate will be measured over a 1 year period of the pilot study). The study lists 3 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT04156438, which also lists 18 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 28 Jan 2022.

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