Respiratory support in meconium aspiration syndrome: a practical guide

Area of Science:

• Neonatal Medicine
• Pediatric Pulmonology
• Respiratory Critical Care

Background:

• Meconium aspiration syndrome (MAS) is a significant cause of respiratory distress in newborns.
• MAS involves airway obstruction, lung injury, and pulmonary hypertension, leading to hypoxemia and poor lung compliance.
• Standard treatment includes supplemental oxygen, with mechanical ventilation required for approximately one-third of affected infants.

Purpose of the Study:

• To review the pathophysiology and clinical manifestations of MAS.
• To outline current therapeutic strategies for MAS.
• To discuss adjunctive therapies and supportive care for severe cases.

Main Methods:

• Review of existing literature on meconium aspiration syndrome.
• Analysis of treatment modalities including conventional and high-frequency ventilation.
• Evaluation of adjunctive therapies such as inhaled nitric oxide and surfactant administration.

Main Results:

• MAS necessitates respiratory support, often including mechanical ventilation with specific settings (high pressures, prolonged inspiratory time, slow rate).
• High-frequency ventilation may be beneficial for refractory hypoxemia or gas trapping.
• Inhaled nitric oxide is effective for pulmonary hypertension; surfactant and lung lavage are considered for select cases.

Conclusions:

• MAS management requires tailored respiratory support and judicious use of adjunctive therapies.
• With appropriate interventions, even severe MAS cases can be managed effectively.
• Current approaches aim to support neonates through the disease while minimizing short- and long-term complications.