A new born child has not passed meconium for 48 hours. What is the diagnostic procedure of choice?
Failure to pass meconium in the first 2 days of life (48 hours) is typically suggestive of a lower GI tract obstruction such as Hirschsprung's diseases, meconium plug syndrome or anorectal malformation. A contrast enema is the most suitable primary investigation to make the diagnosis, amongst the options provided.
USG
Contrast enema
CT
MRI
Intestinal obstruction