Rapid Review: Respiratory Distress Syndrome

Sample question:

You are called to the nursery to examine a newborn boy. He was born at 36 weeks via C section to a 32-year-old G3, P3 mother. APGAR scores were 7 and 9. After six hours, the neonate developed respiratory distress. On examination, respiratory rate is 70, with nasal flaring, expiratory grunting, intercostal retractions, decreased breath sounds, and diminished peripheral pulses. Chest radiograph show diffuse reticulogranular ground glass appearance. Which of the following is the most likely diagnosis?