Bag and mask ventilation is absolutely contraindicated in –
Bag and mask ventilation is contraindicated when there are increased chances of aspiration like :- full stomach, intestinal obstruction, pregnancy, hiatus hernia, Diaphragmatic hernia, Tracheo-esuphageal fistula, Meconium aspiration syndrome.
Tracheo-esophageal fistula with esophageal atreasia and esophagus connected to trachea
Diaphragmatic hernia
Meconium aspiration
All of the above