Antenatal modes of surfactant administration for RDS prevention: a review

Area of Science:

• Neonatal Medicine
• Pulmonology
• Pharmacology

Background:

• Respiratory distress syndrome (RDS) is a significant cause of neonatal morbidity and mortality.
• Lung surfactant replacement therapy is a cornerstone of neonatal RDS management.
• Investigating antenatal administration routes for surfactant supplements aims to improve preventative strategies.

Purpose of the Study:

• To review literature on antenatal surfactant supplement administration routes.
• To assess in-utero, antenatal, and endotracheal surfactant treatment efficacy.
• To compare antenatal routes (oral, intra-amniotic) with postnatal endotracheal administration for RDS prevention.

Main Methods:

• Systematic literature search of Medline and ACOG databases.
• Focused review on fetal breathing and amniotic fluid swallowing mechanisms.
• Analysis of animal and human studies on supplementary surfactant administration routes.

Main Results:

• Antenatal administration of surfactant supplements has been explored in animal and human studies.
• Investigated routes include fetal oral and intra-amniotic fluid administration.
• The therapeutic benefits of these antenatal routes remain inconclusive.

Conclusions:

• In-utero oral surfactant delivery is documented, but lung absorption mechanisms are unclear.
• Intra-amniotic surfactant installation is noted, but postnatal endotracheal levels are not consistently assessed.
• No established methods for antenatal endotracheal surfactant administration were identified.