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Updated: Jun 7, 2026

Surfactant Depletion Combined with Injurious Ventilation Results in a Reproducible Model of the Acute Respiratory Distress Syndrome (ARDS)
Published on: April 7, 2021
Acute respiratory distress syndrome
1Division of Pediatric Critical Care, University of Alabama, Birmingham, AL 35233, USA. pprabhakaran@peds.uab.edu
Insights
Low tidal volume ventilation is the only proven strategy to improve outcomes in pediatric acute respiratory distress syndrome (ARDS). This approach helps minimize ventilator-induced lung injury and associated multi-organ failure in critically ill children.
Area of Science:
- Pediatric Critical Care Medicine
- Respiratory Physiology
- Mechanical Ventilation
Background:
- Acute respiratory distress syndrome (ARDS) is a frequent and severe condition in pediatric intensive care units.
- ARDS presents heterogeneity in causes and significant mortality risk.
- Numerous supportive therapies are available for managing pediatric ARDS.
Purpose of the Study:
- To review current evidence on supportive therapies for pediatric acute respiratory distress syndrome (ARDS).
- To identify strategies that improve outcomes in children with ARDS.
- To evaluate the efficacy of various interventions based on recent pediatric randomized controlled trials.
Main Methods:
- Literature search conducted on PubMed using keywords 'ARDS' and related terms.
- Inclusion of pediatric randomized controlled trials published within the last 10 years.
- Emphasis on pediatric literature, supplemented by key adult studies; evidence levels I and II prioritized.
Main Results:
- Low tidal volume ventilation (≤ 6 mL/kg predicted body weight) is the sole strategy consistently improving ARDS outcomes.
- Judicious use of positive end-expiratory pressure is recommended for lung recruitment.
- Insufficient evidence exists for routine use of high-frequency ventilation, prone positioning, or inhaled nitric oxide.
- Calfactant therapy shows promise for direct lung injury ARDS; routine corticosteroids are not supported.
Conclusions:
- Low tidal volume ventilation is crucial for improving outcomes and minimizing lung injury in pediatric ARDS.
- Careful application of positive end-expiratory pressure is essential.
- Further research is needed to establish the role of emerging therapies like calfactant.
Background:
Acute respiratory distress syndrome (ARDS) is a common diagnosis among children admitted to pediatric intensive care units. This heterogeneous disorder has numerous pulmonary and non-pulmonary causes and is associated with a significant risk of mortality. Many supportive therapies exist for ARDS. SEARCH: Literature search was performed by using the key words ARDS and related topics on the Pubmed search engine maintained by the National Heart, Lung, Blood Institute. Pediatric randomized controlled trials that have been published in the last 10 years were included. Emphasis was placed on pediatric literature, although sentinel adult studies have been included. Most of the evidence presented is of levels I and II.
Results:
Low tidal volume is the only strategy that has consistently improved outcome in ARDS. A tidal volume of ≤ 6 mL/kg predicted body weight should be used. Ventilator induced lung injury may result in systemic effects with multi-system organ failure, and all efforts should be made to minimize this. Positive end-expiratory pressure should be used to judiciously maintain lung recruitment. There is insufficient evidence to routinely use high frequency ventilation, prone positioning, or inhaled nitric oxide. Calfactant therapy is promising and may be considered in children with direct lung injury and ARDS. Current literature does not support routine use of corticosteroids for non-resolving ARDS.
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