Surgery A new born girl not passed meconium for 48 hrs, has abdominal distention and vomiting, Initial investigation of choice would be A Manometry B Genotyping for cystic fibrosis C Lower GI contrast study D Serum trypsin immunoblot 💡 Explanation A new born girl not passed meconium for 48 hrs, has abdominal distention and vomiting, Initial investigation of choice would be ✓ Correct Answer: C. Lower GI contrast study