Audio Qbank – Q66 – A neonate in respiratory distress

 

An 840-gram female newborn delivered at 29 weeks gestation develops severe respiratory distress and is managed in ICU. Which of the following combinations of variables best explains this patient’s presentation?

  ↑ Sphingomyelin; ↓ Dipalmitoylphosphatidylcholine; ↑ Phosphatidylglycerol

  ↑ Sphingomyelin; ↓ Dipalmitoylphosphatidylcholine; ↓ Phosphatidylglycerol
  ↑ Sphingomyelin; ↓ Dipalmitoylphosphatidylcholine; ↔ Phosphatidylglycerol
  ↓ Sphingomyelin; ↑ Dipalmitoylphosphatidylcholine; ↑ Phosphatidylglycerol
  ↓ Sphingomyelin; ↑ Dipalmitoylphosphatidylcholine; ↓ Phosphatidylglycerol
  ↓ Sphingomyelin; ↑ Dipalmitoylphosphatidylcholine; ↔ Phosphatidylglycerol

Cut-to-the-chase Answer (0:58):

HY USMLE Answer (2:08):