Postnatal Steroids in Preterm Infants: A Narrative Review Series-Part 1: Inflammatory Modulation and Respiratory...

Area of Science:

• Neonatal Medicine
• Pediatric Pulmonology
• Pharmacology

Background:

• Extremely preterm infants face high risks of lung injury and bronchopulmonary dysplasia (BPD) due to immature lungs requiring prolonged respiratory support.
• Systemic postnatal corticosteroids are frequently used to manage lung inflammation and facilitate extubation in these vulnerable infants.
• Current clinical practice shows significant variation in corticosteroid therapy timing, agent choice, and dosage, stemming from limited evidence and understanding of their effects.

Purpose of the Study:

• To review current knowledge on the inflammatory and respiratory effects of postnatal corticosteroids in extremely preterm infants.
• To explore how corticosteroids impact pulmonary inflammation, lung development, and clinical outcomes like extubation success and BPD severity.
• To examine evolving administration strategies and the need for individualized approaches based on patient-specific factors.

Main Methods:

• Narrative review integrating current research on postnatal corticosteroid therapy in extremely preterm infants.
• Analysis of randomized controlled trials to compare efficacy and side-effect profiles of common corticosteroid regimens.
• Discussion of mechanistic insights, clinical evidence, and emerging monitoring tools for optimizing therapy.

Main Results:

• Current evidence supports the judicious use of late, low-dose dexamethasone for managing respiratory issues in extremely preterm infants.
• Early prophylactic use of inhaled or intratracheal steroids is considered experimental and not routinely advised.
• Individualized corticosteroid strategies, informed by developmental and disease-specific factors, are crucial for balancing benefits and risks.

Conclusions:

• A nuanced, individualized approach to postnatal corticosteroid therapy is supported by synthesizing mechanistic and clinical evidence.
• Optimizing corticosteroid use requires careful patient selection and timing, potentially enhanced by domain-specific monitoring tools.
• Balancing the therapeutic benefits of corticosteroids against potential systemic trade-offs is essential for improving outcomes in extremely preterm infants.