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What is The time usually taken for air to reach the descending colon after birth in a normal infant is: and explain in detail?
Ans. (d) 8-9 hrs* Since there is no gas in the abdomen of a new born baby, in case we are investigating a baby with ano- rectal malformations, the X-Ray to be done shall be an INVERTOGRAM and should be done after 8 hours as that would the time taken for air to reach the descending colon and performing the X ray shall be fruitful.