<prompt> Vomiting on the first day of babys life may be caused by all of the following except -Pyloric stenosisOesophageal atersiaAerophagyAmniotic gastritis  <response>: 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. 