<prompt> Bag and mask ventilation is contraindicated in all except?Transient tachypnea of newbornTracheo - esophageal fistulaDiaphragmatic herniaMeconium aspiration syndrome  <response>: Ans. is a i.e., Transient tachypnea of newborn Bag and mask ventilation is contraindicated in Diaphragmatic hernia, Tracheo-esophageal fistula and Meconium aspiration syndrome. 