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: Unknown
Bag and mask ventilation is contraindicated in newborn resuscitation with clinical suspicion of ? 
Select and explain. 
A. Diaphragmatic hernia, B. Intracranial hemorrhage, C. Meconium aspiration, D. Pneumothorax
A: Diaphragmatic hernia
Answer: A: Diaphragmatic hernia 
Explanation: Ans. (a) A diaphragmatic herniaRef: OP Ghai 8th ed./129Bag and mask will lead to over-distention of the stomach which is already lying on the pleural surface. This will worsen the mediastinal shift and compress the ipsilateral lung further leading to worsening of the patient.