Acute Respiratory Distress Syndrome (ARDS): The Daily PANCE Blueprint
A 32-week preterm infant has an APGAR score of 9 at 5 minutes. Thirty minutes after delivery, the infant develops tachypnea, retractions, and expiratory grunting. Cyanosis and dyspnea appear with little response to oxygen. Physical examination reveals poor air movement bilaterally. A chest x-ray reveals air bronchograms and a fine reticular granular pattern. Which of the following conditions should be suspected?
A. Transient tachypnea of the newborn (TTN)
B. Meconium aspiration syndrome (MAS)
C. Neonatal pneumonia
D. Respiratory distress syndrome (RDS)
E. Persistent pulmonary hypertension of the newborn (PPHN)
Answer and topic summary
The answer is D. Respiratory distress syndrome (RDS)
Respiratory distress syndrome (RDS) should be suspected in a preterm infant presenting with respiratory distress, cyanosis, and a characteristic chest x-ray showing air bronchograms and a fine reticular granular pattern. RDS is caused by surfactant deficiency in preterm infants, leading to alveolar collapse, impaired gas exchange, and respiratory distress.
Incorrect Answers:
- A. Transient tachypnea of the newborn (TTN): TTN typically occurs in term or near-term infants and is characterized by tachypnea shortly after birth due to retained lung fluid. The chest x-ray usually shows prominent perihilar streaking and fluid in the fissures rather than a reticular granular pattern.
- B. Meconium aspiration syndrome (MAS): MAS is more common in term or post-term infants and is associated with a history of meconium-stained amniotic fluid. The chest x-ray in MAS often shows patchy infiltrates and hyperinflation rather than a uniform reticular granular pattern.
- C. Neonatal pneumonia: Neonatal pneumonia can present with respiratory distress and a diffuse infiltrative pattern on chest x-ray. However, it is usually associated with signs of infection such as fever, poor feeding, and a history of maternal infection. The x-ray findings in pneumonia are less likely to show the classic reticular granular pattern seen in RDS.
- E. Persistent pulmonary hypertension of the newborn (PPHN): PPHN presents with severe hypoxemia and respiratory distress, often with a history of birth asphyxia or meconium aspiration. The chest x-ray in PPHN may appear normal or show signs of underlying lung disease, but it does not typically show the reticular granular pattern characteristic of RDS.
View blueprint lesson
Smarty PANCE Content Blueprint Review:
Covered under ⇒ PANCE Blueprint Pulmonary ⇒
