A Multicenter Randomized Clinical Trial (RCT) of Ventilation for Acute Respiratory Distress Syndrome (ARDS) (PREVENT VILI)
Acute Respiratory Distress Syndrome, Respiratory Failure
About this trial
This is an interventional treatment trial for Acute Respiratory Distress Syndrome focused on measuring critical care, critical illness, esophageal manometry, transpulmonary pressure, mechanical ventilation, lung stress
Eligibility Criteria
Inclusion Criteria: Age ≥ 18 years Moderate or severe ARDS, defined as meeting all of the following (a-e): Invasive ventilation with positive end-expiratory pressure (PEEP) ≥ 5 cm H2O Hypoxemia as characterized by: If arterial blood gas (ABG) available: the partial pressure of oxygen in the arterial blood (PaO2)/FiO2 ≤ 200 mm Hg, or, if ABG not available OR overt clinical deterioration in oxygenation since last ABG: SpO2/FiO2 ≤ 235 with SpO2 ≤ 97% (both conditions) on two representative assessments between 1 to 6 hours apart Bilateral lung opacities on chest imaging not fully explained by effusions, lobar collapse, or nodules Respiratory failure not fully explained by heart failure or fluid overload Onset within 1 week of clinical insult or new/worsening symptoms Early in ARDS course Within 48 hours since meeting last moderate-severe ARDS criterion (#2 above) Current invasive ventilation episode not more than 4 days duration Current severe hypoxemic episode (receipt of invasive ventilation, noninvasive ventilation, or high-flow nasal cannula) not more than 10 days duration Exclusion Criteria: Esophageal manometry used clinically Severe brain injury: including suspected elevated intracranial pressure, cerebral edema, or Glasgow coma score (GCS) ≤ 8 directly caused by severe brain injury (e.g., ischemia/hemorrhage). Gross barotrauma or chest tube inserted to treat barotrauma Esophageal varix or stricture; recent oropharyngeal or gastroesophageal surgery; or past esophagectomy Severe coagulopathy (platelet < 5000/µL or international normalized ratio [INR] > 4) Extracorporeal membrane oxygenation or carbon dioxide (CO2) removal Neuromuscular disease that impairs spontaneous breathing (including but not limited to amyotrophic lateral sclerosis, Guillain-Barré syndrome, spinal cord injury at C5 or above) Chronic supplemental oxygen, pulmonary fibrosis, or lung transplant Refractory shock: norepinephrine-equivalent dose ≥ 0.4 µg/kg/min or simultaneous receipt of ≥ 3 vasopressors Severe liver disease, defined as Child-Pugh Class C ICU admission for burn injury Current ICU stay > 2 weeks or hospital stay (including subacute hospitalization) > 4 weeks Estimated mortality > 50% over 6 months due to underlying chronic medical condition Limitation on life-sustaining care, other than do-not-resuscitate Treating clinician refusal OR unwilling to use protocol-specified ventilator settings / modes Prisoner
Sites / Locations
- Beth Israel Deaconess Medical Center
- Columbia University Medical Center
Arms of the Study
Arm 1
Arm 2
Experimental
Active Comparator
Precision ventilation
Guided usual care
Ventilator support will be calibrated to maintain the range of lung stress typical of relaxed breathing in healthy adults. The ventilator management protocol takes into account pleural pressure, tidal volume and driving pressure, fraction of inspired oxygen (FiO2) and oxygen saturation (SpO2), and positive end-expiratory pressure (PEEP) titration.
Ventilator support will be managed by the clinical team per usual care with select protocol-based guard rails to avoid practice extremes beyond the current body of evidence. PEEP titration will be performed by the clinical team within the limits set in. The allowable combinations of PEEP and FiO2 in the control arm reflect pre-intervention usual care observed at baseline in the recent large federally-funded multicenter ARDS trials.