Vomiting on the first day of baby's life may be caused by all of the following except -

Ans is 'a' i.e., Pyloric stenosis o A large number of normal babies vomit on first day due to irritation of stomach by swallowed amniotic fluid o The regurgitation / vomiting in a neonate is due to --> faulty feeding techniques or, aerophagy o Eosophageal atresia may present with vomiting on the first day. o In hyperophic pyloric stenosis vomiting characteristically occurs after 2 weeks of age. (2-3 weeks).