This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pediatrics
Most common cause of respiratory distress after bih in first 24 hours is - 
Select and explain. 
A. Neonatal sepsis, B. Meconium aspiration, C. Bacterial pneumonia, D. Air embolism
B: Meconium aspiration
Answer: B: Meconium aspiration 
Explanation: Ans. is 'b' i.e., Meconium aspiration o Most common cause of respiratory distress in a term or post-term neonate -4 Meconium aspiration. o Most common cause of respiratory distress in a preterm infant --> hyaline membrane disease.