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
Bag and mask therapy is contraindicated in - 
Select and explain. 
A. Diaphragmatic hernia, B. Congenital lung cysts, C. Tracheo Oesophageal fistula, D. Meconium aspiration
A: Diaphragmatic hernia
Answer: A: Diaphragmatic hernia 
Explanation: Ans. is 'a' Diaphragmatic hernia In diaphragmatic hernia the abdominal contents herniating into the thoracic cavity have already compromised ventilation. Giving bag and mask ventilation will worsen the condition of the patient, as air will also enter in the stomach and further compress the lungs.