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Updated: Jul 1, 2025

Surfactant Depletion Combined with Injurious Ventilation Results in a Reproducible Model of the Acute Respiratory Distress Syndrome ARDS
Published on: April 7, 2021
Use of surfactant beyond respiratory distress syndrome, what is the evidence?
Riddhi K Desai1, Hilal Yildiz Atar2, Satyan Lakshminrusimha3
1Division of Neonatology, University of Texas Southwestern Medical Center, Dallas, TX, USA. riddhi.desai@utsouthwestern.edu.
Insights
Surfactant therapy, approved for premature infants with respiratory distress syndrome (RDS), shows promise in off-label uses for term infants and acute respiratory failure. Further research is ongoing for surfactant deficiency evaluation and drug delivery applications.
Area of Science:
- Neonatal Medicine
- Pulmonology
- Pharmacology
Background:
- Surfactant replacement therapy is FDA-approved for premature infants with respiratory distress syndrome (RDS) due to surfactant deficiency.
- Established benefits include reduced mortality and air leak syndromes in premature infants with RDS.
- Off-label surfactant use is explored for various respiratory failures beyond classic RDS.
Purpose of the Study:
- To review current evidence on off-label surfactant therapy in neonatal respiratory failure.
- To explore surfactant use in term infants with conditions like meconium aspiration syndrome (MAS), pneumonia/sepsis, and congenital diaphragmatic hernia.
- To examine surfactant use in premature infants beyond 72 hours for acute respiratory failure and surfactant lavage.
Main Methods:
- Literature review of current evidence on off-label surfactant therapy.
- Analysis of studies investigating surfactant use in term infants with specific lung diseases.
- Evaluation of research on extended use in premature infants and surfactant lavage techniques.
Main Results:
- Evidence supports surfactant's efficacy in specific off-label neonatal respiratory conditions.
- The review highlights ongoing research into surfactant's role in drug delivery and deficiency evaluation.
- Off-label applications show potential benefits in managing complex neonatal respiratory issues.
Conclusions:
- Surfactant replacement therapy has expanding applications beyond its approved indications.
- Further investigation is warranted to establish definitive guidelines for off-label surfactant use.
- Surfactant holds potential for novel therapeutic strategies, including drug delivery and diagnosing surfactant deficiency.
Abstract:
Surfactant replacement therapy is currently approved by the United States Food and Drug Administration (FDA) for premature infants with respiratory distress syndrome (RDS) caused by surfactant deficiency due to immaturity. There is strong evidence that surfactant decreases mortality and air leak syndromes in premature infants with RDS. However, surfactant is also used "off-label" for respiratory failure beyond classic RDS. This review discusses current evidence for the use of off-label surfactant therapy for (1) term infants with lung disease such as meconium aspiration syndrome (MAS), pneumonia/sepsis, and congenital diaphragmatic hernia (2) premature infants after 72 h for acute respiratory failure, and (3) the use of surfactant lavage. At last, we briefly describe the use of surfactants for drug delivery and the current evidence on evaluating infants for surfactant deficiency.
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