PREcision VENTilation to Attenuate Ventilator-Induced Lung Injury: A Phase 3 Multicenter Randomized Clinical Trial
Beth Israel Deaconess Medical Center
Summary
The goal of this interventional study is to compare standard mechanical ventilation to a lung-stress oriented ventilation strategy in patients with Acute Respiratory Distress Syndrome (ARDS). Participants will be ventilated according to one of two different strategies. The main question the study hopes to answer is whether the personalized ventilation strategy helps improve survival.
Description
ARDS is a devastating condition that places a heavy burden on public health resources. Recent changes in the practice of mechanical ventilation have improved survival in ARDS, but mortality remains unacceptably high. This application is for support of a phase III multi-centered, randomized controlled trial of mechanical ventilation, directed by driving pressure and esophageal manometry, in patients with moderate or severe ARDS. The primary hypothesis is that precise ventilator titration to maintain lung stress within 0-12 centimeters of water (cm H2O), the normal physiological range experienc…
Eligibility
- Age range
- 18+ years
- Sex
- All
- Healthy volunteers
- No
Inclusion Criteria: 1. Age ≥ 18 years 2. Moderate or severe ARDS, defined as meeting all of the following (a-e): 1. Invasive ventilation with positive end-expiratory pressure (PEEP) ≥ 5 cm H2O 2. 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. • If patient is positioned prone or receivin…
Interventions
- OtherPrecision ventilation
The intervention arm prioritizes mitigation of ventilator-induced-lung-injury by individualizing support to patient-specific mechanics in an integrated approach to limit overdistension and atelectrauma. This is accomplished in this arm by titration of tidal volume to limitation of driving pressure at 12 centimeters of water (cmH2O) or less and using esophageal manometry to titrate PEEP to a transpulmonary pressure of 0 cmH2O with adjustments in respiratory rate to allow for permissive hypercapnia and FiO2 adjustments to assure adequate oxygenation.
- OtherGuided usual care ventilation
The comparison arm allows clinician discretion when titrating PEEP and tidal volume, while setting general targets for allowable PEEP/FiO2 combinations, target range for SpO2, and target range for tidal volume. This arm applies routine best-practice guidelines. This includes maintenance of tidal volumes of 6-8 cc/kg of ideal body weight, limiting plateau pressures to 30 cmH2O or less and application of PEEP-FiO2 combinations which include a wide range of typical usual care with esophageal manometry only for data collection and not clinical adjustment.
Locations (24)
- University of ArizonaTucson, Arizona
- University of California, San DiegoLa Jolla, California
- University of California, Los Angeles Medical CenterLos Angeles, California
- Cedar-Sinai Medical CenterLos Angeles, California
- University of California, San FranciscoSan Franciso, California
- University of ChicagoChicago, Illinois