Proportional Assist Ventilation for Minimizing the Duration of Mechanical Ventilation: The PROMIZING Study
- Conditions
- Critically IllAcute Respiratory Failure
- Registration Number
- NCT02447692
- Lead Sponsor
- London Health Sciences Centre Research Institute OR Lawson Research Institute of St. Joseph's
- Brief Summary
For adult patients with acute respiratory failure requiring invasive mechanical ventilation, does a ventilation strategy using proportional assist ventilation with load-adjustable gain factors (PAV+) result in a shorter duration of time spent on mechanical ventilation than a ventilation strategy using pressure support ventilation (PSV)?
- Detailed Description
Patients with acute respiratory failure require mechanical ventilation to help them breathe until they recover from their acute illness. Although mechanical ventilation is necessary to sustain life in such situations, it can induce weakness of the respiratory muscles which may lead to prolonged dependence on the ventilator. Prolonged dependence on mechanical ventilation is associated with increased mortality, morbidity and costs to the healthcare system. Thus, a main goal of assisted mechanical ventilation is to reduce the patient's respiratory distress while maintaining some respiratory muscle activity. To attain this goal, the amount of ventilator assistance should theoretically be adjusted to target normal or reasonable levels of respiratory effort.
Modes of Mechanical Ventilation:
Proportional assist ventilation with load-adjustable gain factors (PAV+) is a mode of mechanical ventilation which delivers assistance to breathe in proportion to the patient's effort. The proportional assistance, called the gain, can be adjusted by the clinician to maintain the patient's respiratory effort or workload within a reasonable range. This is the only mode of ventilation which allows for measurement and targeting of a specific range of respiratory muscle activity by the patient.
Pressure support ventilation (PSV) is a mode of ventilation which is considered the current standard of care for assisting breathing of patients during the recovery phase of acute respiratory failure. Several studies have shown short term advantages of PAV over PSV, including improved patient-ventilator synchronization, improved adaptability to changes in patient effort, and improved sleep quality.
Goal of this Randomized Controlled Trial:
To demonstrate that for patients with acute respiratory failure, ventilation with PAV+, being more physiological, will result in a shorter duration of time spent on mechanical ventilation than ventilation with PSV.
Recruitment & Eligibility
- Status
- COMPLETED
- Sex
- All
- Target Recruitment
- 575
Not provided
Not provided
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- PARALLEL
- Primary Outcome Measures
Name Time Method Time from randomization to successful liberation from invasive mechanical ventilation. up to 90 days "Successful liberation" is defined as removal of the endotracheal tube AND remaining alive with no need for reintubation/reinstitution of invasive mechanical ventilation for 7 days post extubation, or until successful ICU discharge, or until live hospital discharge, whichever comes first.
- Secondary Outcome Measures
Name Time Method Weaning Progress up to 90 days Measured as time from randomization to: first SBT; first successful SBT; first extubation
Serious Adverse Events 90 days Incidence of reported serious adverse events
Time from randomization to live ICU discharge (up to day 90) up to 90 days Patients will remain in the study and will continue on the assigned ventilation strategy until: successful extubation, successful ICU discharge, live hospital discharge, death, or 90 days post randomization, whichever comes first.
Ventilator-free days at 14, 21 and 28 days post randomization 14, 21 and 28 days post randomization "Ventilator-free days" (VFDs) are defined as the number of days alive and free of INVASIVE ventilation post SUCCESSFUL EXTUBATION or post successful termination of invasive mechanical ventilation (MV) from time of randomization to day 21 post randomization. "Successful extubation" is defined as removal of the endotracheal tube AND remaining alive with no need for reintubation/reinstitution of invasive mechanical ventilation for 7 days post extubation, or until successful ICU discharge, or until live hospital discharge, whichever comes first.
Time from randomization to live hospital discharge (up to day 90) up to 90 days Patients will remain in the study and will continue on the assigned ventilation strategy until: successful extubation, successful ICU discharge, live hospital discharge, death, or 90 days post randomization, whichever comes first.
Weaning Difficulties 90 days Measured as the number of patients failing first SBT or first extubation attempt and requiring up to 7 days to extubate (difficult weaning group/group 2); failing first SBT or first extubation attempt and requiring more than 7 days to extubate (prolonged weaning group/group 3)
Weaning Complications 90 days Measured as the number of patients: requiring non-invasive ventilation post-extubation; ventilated more than 7 days post randomization, ventilated more than 21 days from time of intubation (prolonged MV group); receiving tracheostomy post-randomization, requiring re-intubation (up to 7d after planned extubation)
Tolerance of modes 90 days Measured as number of patients ever requiring A/C mode post randomization; number of patient-days requiring A/C mode post randomization
Mortality up to 90 days Measured as time to death, ICU mortality; hospital mortality; 21, 28, and 90 day mortality
Trial Locations
- Locations (22)
El Centro de Educación Médica e Investigaciones Clínicas "Norberto Quirno"
🇦🇷Buenos Aires, Argentina
Kingston General Hospital
🇨🇦Kingston, Ontario, Canada
London Health Sciences Centre - University Hospital
🇨🇦London, Ontario, Canada
Victoria Hospital
🇨🇦London, Ontario, Canada
Sunnybrook Hospital - Health Sciences Centre
🇨🇦Toronto, Ontario, Canada
North York General Hospital
🇨🇦Toronto, Ontario, Canada
St. Michael's Hospital
🇨🇦Toronto, Ontario, Canada
UHN- Toronto General Hospital
🇨🇦Toronto, Ontario, Canada
UHN- Toronto Western Hospital
🇨🇦Toronto, Ontario, Canada
Centre hospitalier de l'Université de Montréal (CHUM)
🇨🇦Montréal, Quebec, Canada
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