This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Gastrointestinal tract, Subject name: Pediatrics
A new born with recurrent vomiting, cynosis after each feed is likely to be suffering from 
Select and explain. 
A. Tracho oesophageal fistula, B. Tetrology of fallot, C. Congenital hyperophic pyloric stenosis, D. ARDS
A: Tracho oesophageal fistula
Answer: A: Tracho oesophageal fistula 
Explanation: Clinical features : The presence of maternal polyhyramnios and single umbilical aery should ale the pediatrician to look for atresia of the upper GIT.Association of congenital anomalies of veebrae, anorectal region,hea,kidneys or limbs should arouse suspicion.The newborn baby has excessive drooling ,saliva is frothy and there is choking and cyanosis with first feed.Overflow of milk and saliva from oesophagus, and regurgitation of secretions through the fistulous tract into the lungs is present. Ref : ESSENTIAL PEDIATRICS,O.P.GHAI,PG NO:151,7th edition