NCT02969226

Brief Summary

Background: The sickest patients who are admitted to an intensive care unit (ICU) often require assistance with their breathing. When patients start to get better, they gradually do more of the breathing and the machine does less-this is called weaning. Although ventilator use saves lives, the longer it is used, the more complications can occur. Clinicians aim to wean patients from ventilators in a timely and safe manner. In most ICUs, patients are screened (looked at) once per day to see if they are ready to undergo a weaning test (using a variety of techniques) to see if the breathing tube can be removed. Screening more than once per day may allow more weaning tests to be conducted. Knowing the best way to do a weaning test is important because some methods may better determine who can have the breathing tube removed safely. At present, we don't know the best way to help our sickest patients to wean from ventilators. Patients: Adults in North American ICUs who are on ventilators for at least 24 hours and who can take breaths on their own. Interventions: Patients in our study will receive one type of screening and one type of weaning test at random. In the 'once daily' screening groups, clinicians will screen patients each morning. In the 'two or more times daily screening' groups, patients will be screened in the morning, afternoon, and whenever else clinicians wish to screen. When screening criteria are met, patients will undergo one of two weaning tests with low ventilator support or no support. Outcomes: The main outcome of this study will be the time for patients to be successfully removed from the ventilator. Relevance: For patients, this study will clarify the best way to remove them from ventilators in a timely and safe manner. For clinicians and our health care systems, this study holds promise to improve how critically ill patients are weaned from breathing machines.

Trial Health

47
At Risk

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Enrollment
760

participants targeted

Target at P75+ for not_applicable

Timeline
Completed

Started Jan 2018

Typical duration for not_applicable

Geographic Reach
2 countries

17 active sites

Status
unknown

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

November 17, 2016

Completed
4 days until next milestone

First Posted

Study publicly available on registry

November 21, 2016

Completed
1.2 years until next milestone

Study Start

First participant enrolled

January 18, 2018

Completed
3.1 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

March 1, 2021

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

March 1, 2021

Completed
Last Updated

December 5, 2018

Status Verified

December 1, 2018

Enrollment Period

3.1 years

First QC Date

November 17, 2016

Last Update Submit

December 4, 2018

Conditions

Keywords

mechanical ventilationweaningcritically illspontaneous breathing trialscreeninginvasive ventilationSBT technique

Outcome Measures

Primary Outcomes (1)

  • Time to successful extubation

    time from randomization to successful extubation

    3-4 years

Secondary Outcomes (10)

  • ICU mortality

    3-4 years

  • Hospital and 90 day mortality

    3-4 years

  • Time to first passing an SBT

    3-4 years

  • Total duration of mechanical ventilation (invasive and noninvasive),

    3-4 years

  • ICU length of stay

    3-4 years

  • +5 more secondary outcomes

Study Arms (4)

Once daily screening + PS SBTs

ACTIVE COMPARATOR

In this arm, RTs will screen patients between approximately 06:00 - 08:00 hrs daily. If a screening period is missed inadvertently or due to an investigation or intervention (operation/procedure) necessitating absence from the ICU, it may be conducted later on the same day and ideally within 6 hrs of the scheduled screening period. Regardless of group assignment, if the SBT screening assessment is passed, an SBT will be conducted as per protocol. RTs will conduct SBTs using only PS\> 0 and =\< 8 cm H2O with PEEP\> 0 and =\< 5 cm H2O.

Procedure: Once daily screeningProcedure: PS SBTs

At least twice daily screening + PS SBTs

EXPERIMENTAL

In this arm patients will be screened at a minimum between approximately 06:00 - 08:00 hours and 13:00 - 15:00 hs daily. If a screening period is missed inadvertently or due to an investigation or intervention (operation/procedure) necessitating absence from the ICU, it may be conducted later on the same day and ideally within 6 hrs of the scheduled screening period. Additional screening trials in the 'at least twice daily' screening arm will be permitted at the discretion of the clinical team \[RTs and physicians\]. Regardless of group assignment, if the SBT screening assessment is passed, an SBT will be conducted as per protocol. RTs will conduct SBTs using only PS\>0 and =\< 8 cm H2O with PEEP\>0 and =\< 5 cm H2O.

Procedure: Twice daily screeningProcedure: PS SBTs

Once daily screening + T-piece SBTs

ACTIVE COMPARATOR

In this arm + PS SBT' arm, RTs will screen invasively ventilated patients between approximately 06:00 - 08:00 hrs daily. If a screening period is missed inadvertently or due to an investigation or intervention (operation/procedure) necessitating absence from the ICU, it may be conducted later on the same day and ideally within 6 hrs of the scheduled screening period. Regardless of group assignment, if the SBT screening assessment is passed, an SBT will be conducted as per protocol. RTs will conduct SBTs using only T-piece (off the ventilator).

Procedure: Once daily screeningProcedure: T-piece SBTs

At least twice daily screening + T-piece SBTs

ACTIVE COMPARATOR

In this arm, RTs will screen invasively ventilated patients between approximately 06:00 - 08:00 hours daily. If a screening period is missed inadvertently In the 'at least twice daily + PS SBT' screening arm patients will be screened at a minimum between approximately 06:00 - 08:00 hrs and 13:00 - 15:00 hrs daily. If a screening period is missed inadvertently or due to an investigation or intervention (operation/procedure) necessitating absence from the ICU, it may be conducted later on the same day and ideally within 6 hours of the scheduled screening period. Additional screening trials in the 'at least twice daily' screening arm will be permitted at the discretion of the clinical team (RTs and physicians). Regardless of group assignment, if the SBT screening assessment is passed, an SBT will be conducted as per protocol. RTs will conduct SBTs using only T-piece (off the ventilator).

Procedure: Twice daily screeningProcedure: T-piece SBTs

Interventions

RTs will screen invasively ventilated patients between approximately 06:00 - 08:00 hours daily. To pass the 'readiness to wean screen' and undergo an SBT, specific criteria must be met.

Once daily screening + PS SBTsOnce daily screening + T-piece SBTs

In the 'at least twice daily' screening arm patients will be screened at a minimum between approximately 6:00-8:00 hours and 13:00-15:00 hours daily. To pass the 'readiness to wean screen' and undergo an SBT, specific criteria must be met.

At least twice daily screening + PS SBTsAt least twice daily screening + T-piece SBTs
PS SBTsPROCEDURE

Patients are assigned a SBT technique. All SBTs for these patients must be conducted on PS \>0 and =\< 8 cm H2O with PEEP\>0 and =\< 5 cm H2O

At least twice daily screening + PS SBTsOnce daily screening + PS SBTs
T-piece SBTsPROCEDURE

Patients are assigned a SBT technique. All SBTs for these patients must be conducted with T-piece (off the ventilator)

At least twice daily screening + T-piece SBTsOnce daily screening + T-piece SBTs

Eligibility Criteria

Age16 Years+
Sexall
Healthy VolunteersNo
Age GroupsChild (0-17), Adult (18-64), Older Adult (65+)

You may qualify if:

  • Receiving invasive mechanical ventilation for \> or = 24 hours.
  • Capable of initiating spontaneous breaths or triggering the ventilator to give a breath on ventilator modes commonly used in the ICU.
  • Fractional concentration of inspired oxygen (FiO2) \< or = 70%.
  • Positive End-Expiratory pressure (PEEP) \< or = 12 cm H2O.

You may not qualify if:

  • Brain death or expected brain death.
  • Evidence of myocardial ischemia in the 24 hour period before enrollment. Except if current trend in troponin is downward AND it has been \> or = 24 hours since last troponin peak or the patient has undergone a revascularization procedure and attending physician has no concerns regarding ongoing ischemia.
  • Received continuous invasive mechanical ventilation for \> or = 2 weeks.
  • Tracheostomy in situ at the time of screening.
  • Receiving a sedative infusion(s) for seizures or alcohol withdrawal.
  • Require escalating doses of sedative agents.
  • Receiving neuromuscular blockers or who have known quadriplegia, paraplegia or 4 limb weakness or paralysis preventing active mobilization.
  • Moribund (e.g., at imminent risk for death) or who have limitations of treatment.
  • Profound neurologic deficits (e.g., post cardiac or respiratory arrest, large intracranial stroke or bleed) or Glasgow Coma Scale (GCS) \< or = 6.
  • Use of ventilator modes that automate SBT conduct.
  • Currently enrolled in a confounding study that includes a weaning protocol.
  • Previous enrollment in this trial.
  • Previous SBT or are already on T-piece, or CPAP alone (without PS), or PS \< or equal 8 cm H2O regardless of PEEP, or other 'SBT equivalent' settings immediately before randomization.
  • Previous extubation \[planned, unplanned (e.g. self, accidental)\] during the same ICU admission.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (17)

Longbeach Memorial Hospital

Long Beach, California, 90806, United States

RECRUITING

Keck Hospital of USC

Los Angeles, California, 90033, United States

NOT YET RECRUITING

Tufts Medical Center

Boston, Massachusetts, 02111, United States

NOT YET RECRUITING

University of Michigan Health System

Ann Arbor, Michigan, 48109, United States

RECRUITING

Temple University Hospital

Philadelphia, Pennsylvania, 19140, United States

NOT YET RECRUITING

Royal Alexandra Hospital

Edmonton, Alberta, T5H3V9, Canada

NOT YET RECRUITING

St. Paul's Hospital

Vancouver, British Columbia, Canada

NOT YET RECRUITING

Hamilton Health Sciences Hamilton General Hospital

Hamilton, Ontario, L8L2X2, Canada

RECRUITING

Juravinski Hospital Cancer Centre

Hamilton, Ontario, Canada

RECRUITING

St. Joseph's Hospital

Hamilton, Ontario, Canada

RECRUITING

Niagara Health - St. Catharines

Niagara, Ontario, L2S 0A9, Canada

RECRUITING

Ottawa General Hospital

Ottawa, Ontario, Canada

RECRUITING

St. Michael's Hospital

Toronto, Ontario, M5B 1W8, Canada

RECRUITING

St. Joseph's Health Centre

Toronto, Ontario, Canada

NOT YET RECRUITING

St. Michael's Hospital

Toronto, Ontario, Canada

RECRUITING

Universite de Sherbooke

Sherbrooke, Quebec, Canada

RECRUITING

Ciusss McQ

Trois-Rivières, Quebec, G9A5C5, Canada

RECRUITING

Related Publications (1)

  • Burns KEA, Wong J, Rizvi L, Lafreniere-Roula M, Thorpe K, Devlin JW, Cook DJ, Seely A, Dodek PM, Tanios M, Piraino T, Gouskos A, Kiedrowski KC, Kay P, Mitchell S, Merner GW, Mayette M, D'Aragon F, Lamontagne F, Rochwerg B, Turgeon A, Sia YT, Charbonney E, Aslanian P, Criner GJ, Hyzy RC, Beitler JR, Kassis EB, Kutsogiannis DJ, Meade MO, Liebler J, Iyer-Kumar S, Tsang J, Cirone R, Shanholtz C, Hill NS; Canadian Critical Care Trials Group. Frequency of Screening and Spontaneous Breathing Trial Techniques: A Randomized Clinical Trial. JAMA. 2024 Dec 3;332(21):1808-1821. doi: 10.1001/jama.2024.20631.

MeSH Terms

Conditions

Critical Illness

Condition Hierarchy (Ancestors)

Disease AttributesPathologic ProcessesPathological Conditions, Signs and Symptoms

Study Officials

  • Karen Burns, MD, FRCPC

    St. Michael's Hospital (Toronto, Canada)

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Karen Burns, MD, FRCPC

CONTACT

Leena Rizvi, BSc.

CONTACT

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
NONE
Purpose
SCREENING
Intervention Model
FACTORIAL
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

November 17, 2016

First Posted

November 21, 2016

Study Start

January 18, 2018

Primary Completion

March 1, 2021

Study Completion

March 1, 2021

Last Updated

December 5, 2018

Record last verified: 2018-12

Data Sharing

IPD Sharing
Will not share

Locations