A 5-day-old newborn in the NICU is suspected of having sepsis. The nurse notes the infant has a temperature of 96.8°F (36°C), abdominal distension, and weak cry. Which nursing action should be the HIGHEST priority?

Respiratory assessment and support is the highest priority as sepsis can rapidly progress to life-threatening respiratory failure in newborns. Other actions like antibiotics, blood cultures, or warming are secondary.

Clinical Reasoning and Priority Setting

In the NICU setting, when a 5-day-old newborn presents with hypothermia (96.8°F / 36°C), abdominal distension, and a weak cry, the nurse must immediately recognize these as clinical warning signs highly associated with sepsis and potential progression to septic shock. The question asks for the highest priority nursing action, which requires applying the "ABC" (Airway, Breathing, Circulation) framework and understanding the pathophysiology of neonatal sepsis.

A weak cry in a neonate is a critical neurological and respiratory red flag. It indicates altered mental status, poor respiratory drive, and potential hypotonia of the upper airway muscles. In the context of suspected sepsis, this sign points toward life-threatening organ dysfunction, specifically respiratory and neurological failure, which aligns with the updated pediatric sepsis consensus criteria ^[3]. A weak cry suggests the infant cannot protect their airway or maintain effective ventilation. Furthermore, abdominal distension can elevate the diaphragm, mechanically compromising lung expansion and leading to hypoventilation and respiratory acidosis.

The systematic review and meta-analysis by Driker et al. reinforces that certain clinical signs are strongly associated with mortality in young infants with sepsis ^[1]. While the abstract does not list all signs, the presence of multiple systemic signs—temperature instability, abdominal distension, and a weak cry—demands an immediate focus on the systems most critical for survival. Before administering antibiotics or obtaining cultures, the nurse must ensure the airway is patent and breathing is adequate. The Surviving Sepsis Campaign pediatric guidelines emphasize that initial resuscitation should focus on restoring physiologic stability, beginning with airway and breathing support ^[2]. While obtaining blood cultures (option 2) and administering antibiotics (option 1) are essential components of the sepsis bundle, they are secondary to immediate life-sustaining interventions. Placing the infant under a radiant warmer (option 3) addresses hypothermia, which is important for reducing metabolic demand, but it does not address the more immediate threat of respiratory failure signaled by the weak cry and abdominal distension.

Therefore, assessing and supporting respiratory status is the highest priority because a compromised airway and ineffective breathing will lead to rapid deterioration, hypoxemia, and cardiac arrest before the effects of antibiotics or warming can take effect. The nurse must first ensure the infant can breathe effectively, providing stimulation, positioning, suctioning, and respiratory support such as positive pressure ventilation if necessary.