A nurse is caring for a 35-week late preterm infant with mild respiratory distress. Which nursing intervention should be the highest priority?

Surfactant replacement therapy is the priority for RDS as it directly addresses surfactant deficiency. Other interventions are supportive but not immediate priorities: antibiotics don't treat RDS, prone positioning helps but doesn't correct the underlying cause, and phototherapy is for hyperbilirubinemia.

Understanding the Priority: Respiratory Distress in a Late Preterm Infant

The clinical scenario presents a 35-week late preterm infant with mild respiratory distress. The primary pathophysiological concern in this population is Respiratory Distress Syndrome (RDS), also known as hyaline membrane disease. RDS results from a deficiency or dysfunction of pulmonary surfactant, a phospholipoprotein complex that lines the alveoli to reduce surface tension, prevent atelectasis, and maintain functional residual capacity . Late preterm infants, born between 34 0/7 and 36 6/7 weeks, are at significant risk for surfactant deficiency because the production of endogenous surfactant, particularly dipalmitoylphosphatidylcholine (DPPC), does not fully mature until the later weeks of gestation .

When prioritizing nursing care, the immediate physiological need is to address the underlying cause of the respiratory distress. While the distress is described as "mild," the natural history of RDS can involve progressive atelectasis, worsening ventilation-perfusion mismatch, and hypoxemia. Therefore, the highest priority intervention is the one that directly targets the deficient surfactant, which is the root cause of the condition.

Why Surfactant Replacement Therapy Is the Highest Priority

Preparing for surfactant replacement therapy is the correct priority action. The 2025 European Consensus Guidelines on the Management of Respiratory Distress Syndrome emphasize that optimizing outcomes for infants with RDS involves early and effective respiratory support, with surfactant being a cornerstone of management ^[1]. The decision to administer surfactant should be based on clinical signs of worsening RDS and oxygen requirements, not delayed until the disease is severe. For a late preterm infant already exhibiting signs of respiratory distress, the nursing priority is to anticipate and prepare for this intervention by ensuring vascular access, gathering the appropriate equipment, and collaborating with the neonatal provider to administer the surfactant via the chosen method, such as Less Invasive Surfactant Administration (LISA) or Minimally Invasive Surfactant Therapy (MIST) . These less invasive techniques are increasingly preferred as they allow for surfactant delivery while the infant remains on non-invasive respiratory support, thereby avoiding the complications of endotracheal intubation and mechanical ventilation, such as bronchopulmonary dysplasia (BPD) . Although evidence for routine LISA use in late preterm infants is still evolving, the physiological principle of replacing deficient surfactant to improve lung compliance and gas exchange remains the most direct and critical intervention to halt the progression of RDS .

Analysis of Incorrect Options

- Option 1: Administer prophylactic antibiotics to prevent infection. While infection, including pneumonia and sepsis, can present with respiratory distress in a neonate, it is not the most likely primary cause in a late preterm infant with surfactant deficiency. Prophylactic antibiotics are not a standard intervention for uncomplicated RDS without specific risk factors or clinical signs of infection. Initiating antibiotics without a clear indication exposes the infant to unnecessary medication, disrupts the developing gut microbiome, and can promote antimicrobial resistance. The priority is to manage the most probable diagnosis (RDS) first, while a septic workup can be a secondary consideration if the clinical picture is unclear.

- Option 2: Position the infant in prone position to improve oxygenation. Positioning is a supportive nursing intervention that can improve thoracoabdominal synchrony and oxygenation in some infants with respiratory distress. However, it does not address the underlying pathophysiology of surfactant deficiency. Furthermore, the prone position is only recommended for hospitalized infants on continuous cardiorespiratory monitoring due to its association with an increased risk of Sudden Infant Death Syndrome (SIDS). Positioning is a secondary, supportive measure, not the highest priority action when a definitive, disease-modifying therapy like surfactant is indicated.

- Option 4: Initiate phototherapy to prevent hyperbilirubinemia. Hyperbilirubinemia is a common condition in preterm infants, but initiating prophylactic phototherapy is not an immediate priority in the context of acute respiratory distress. Phototherapy is a treatment for jaundice, not a preventive measure for RDS. The immediate threat to this infant's physiological stability is hypoxemia and respiratory failure stemming from surfactant deficiency, making respiratory support and surfactant preparation the clear priority over managing a potential future complication.