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Updated: Jul 5, 2026

An Educational Video Demonstration of How to Prone a Critically Ill Intubated Patient
Published on: November 30, 2022
Prone positioning in acute respiratory distress syndrome: a multicenter randomized clinical trial
Rafael Fernandez1, Xavier Trenchs, Jordi Klamburg
1CIBER Enfermedades Respiratorias, Hospital de Sabadell, Parc Taulis/n, 08208, Sabadell, Spain. rfernandez@tauli.cat
Insights
Early and continuous prone positioning in Acute Respiratory Distress Syndrome (ARDS) patients showed a trend toward improved survival. This intervention, applied early with protective ventilation, demonstrated minimal side effects and enhanced oxygenation.
Area of Science:
- Critical Care Medicine
- Respiratory Physiology
- Clinical Trials
Background:
- Acute Respiratory Distress Syndrome (ARDS) presents significant mortality challenges.
- Protective ventilation strategies are standard for ARDS management.
- The role of early, continuous prone positioning in refractory ARDS requires further investigation.
Purpose of the Study:
- To evaluate the impact of early and continuous prone positioning on survival in ARDS patients receiving protective ventilation.
- To assess the effects of prone positioning on oxygenation, respiratory mechanics, and clinical outcomes.
Main Methods:
- An open randomized controlled trial was conducted across 17 medical-surgical ICUs.
- Forty mechanically ventilated patients with early, refractory ARDS were randomized to supine or early (within 48 hours), continuous (>= 20 hours/day) prone positioning.
- The study was stopped prematurely due to slow patient recruitment.
Main Results:
- Prone positioning showed a trend toward improved PaO(2)/FIO(2) ratios, reaching statistical significance on day 3 (234 vs. 159 mmHg).
- Sixty-day survival in the prone group was 62% compared to 47% in the supine group, indicating a potential benefit.
- Prone positioning was associated with minimal and reversible side effects.
Conclusions:
- Early and continuous prone positioning may offer a survival benefit for ARDS patients.
- The findings support further research into prone positioning as an adjunctive therapy for ARDS.
- Despite premature termination, the study provides valuable data on the efficacy and safety of early prone positioning.
Objective:
We examined the effect on survival of prone positioning as an early and continuous treatment in ARDS patients already treated with protective ventilation.
Design And Setting:
Open randomized controlled trial in 17 medical-surgical ICUs.
Patients:
Forty mechanically ventilated patients with early and refractory ARDS despite protective ventilation in the supine position.
Interventions:
Patients were randomized to remain supine or be moved to early (within 48[Symbol: see text]h) and continuous (> or = 20 h/day) prone position until recovery or death. The trial was prematurely stopped due to a low patient recruitment rate.
Measurements And Results:
Clinical characteristics, oxygenation, lung pressures, and hemodynamics were monitored. Need for sedation, complications, length of MV, ICU, and hospital stays, and outcome were recorded. PaO(2)/FIO(2) tended to be higher in prone than in supine patients after 6[Symbol: see text]h (202 +/-78 vs. 165+/-70 mmHg); this difference reached statistical significance on day 3 (234+/-85 vs. 159+/-78). Prone-related side effects were minimal and reversible. Sixty-day survival reached the targeted 15% absolute increase in prone patients (62% vs. 47%) but failed to reach significance due to the small sample.
Conclusions:
Our study adds data that reinforce the suggestion of a beneficial effect of early continuous prone positioning on survival in ARDS patients.
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