A nurse is assessing a 28-week gestation preterm newborn who was born 6 hours ago. Which assessment finding would be the priority concern requiring immediate intervention?

Scenario: A 28-week gestation preterm newborn, 6 hours old, is found to have central cyanosis and an oxygen saturation of 82% on room air.

1. Initiate Respiratory Support: Apply supplemental oxygen immediately to target SpO2 of 90-95% for preterm infants, using a blender to avoid hyperoxia. Prepare for non-invasive ventilation (CPAP) or intubation if the infant does not respond.
2. Ensure Airway Patency: Position the infant supine with the neck in a neutral, slightly extended position (sniffing position). Suction the airway gently if secretions are present.
3. Continuous Monitoring: Place the infant on continuous pulse oximetry (pre-ductal, right hand, and post-ductal, either foot) to detect right-to-left shunting. Monitor heart rate, respiratory effort, and blood pressure.
4. Notify the Provider: Immediately inform the neonatologist or neonatal nurse practitioner. Prepare to assist with diagnostic tests such as an echocardiogram to rule out congenital heart disease or confirm PPHN.
5. Obtain Vascular Access: Establish IV access for potential fluid resuscitation, inotropic support, or administration of pulmonary vasodilators (e.g., inhaled nitric oxide) if PPHN is diagnosed.

• Target Oxygen Saturation: For preterm infants less than 32 weeks, avoid hyperoxia (SpO2 >95%) to reduce the risk of retinopathy of prematurity (ROP) and bronchopulmonary dysplasia (BPD). Follow unit-specific oxygen titration protocols.
• Differential Diagnosis: Central cyanosis unresponsive to oxygen suggests PPHN or cyanotic congenital heart disease. A pre- and post-ductal saturation difference of >10% strongly indicates PPHN.
• Thermoregulation: While managing the respiratory emergency, maintain the infant in a pre-warmed incubator or under a radiant warmer to prevent cold stress, which increases oxygen consumption.