<prompt> Vomiting on the first day of babys life may be caused by all of the following exceptPyloric stenosisOesophageal atersiaAerophagyAmniotic gastritis  <response>: A large number of normal babies vomit on first day due to irritation of stomach by swallowed amniotic fluidThe regurgitation vomiting in a neonate is due to - faulty feeding techniques or, aerophagyEosophageal atresia may present with vomiting on the first day.In hypertrophic pyloric stenosis vomiting characteristically occurs after 2 weeks of age. 2-3 weeks. 