Organ System Pathology USMLE Step 1 Practice Question
A 30-week male infant born to a mother with poorly controlled gestational diabetes presents with immediate-onset nasal flaring, grunting, and intercostal retractions. Vital signs show HR 160/min, RR 68/min, BP 55/35 mmHg, and SpO2 88% on room air. Chest radiograph demonstrates diffuse ground-glass opacities with air bronchograms. Maternal prenatal records show inadequate glycemic control. The infant has no meconium aspiration history. Which diagnosis best explains these findings?
Answer choices
- AAcute respiratory distress syndrome
- BSpontaneous pneumothorax
- CNeonatal respiratory distress syndromeCorrect answer
- DPneumocystis jirovecii pneumonia
- ECommunity acquired pneumonia
- FTransient tachypnea of the newborn
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