This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: New Born Infants, Subject name: Pediatrics
Definite contraindication for bag and mask ventilation is: 
Select and explain. 
A. Cleft lip, B. Cleft palate, C. Congenital diaphragmatic hernia, D. Umbilical hernia
C: Congenital diaphragmatic hernia
Answer: C: Congenital diaphragmatic hernia 
Explanation: c. Congenital diaphragmatic hernia(Ref: AAP guidelines 2015, Ghai 8/e p 126-133)Bag & mask ventilation should be avoided in Congenital diaphragmatic hernia, because it enlarges the stomach and small bowel and thus makes oxygenation more difficult.