A 2 month child with diarrhea and vomiting for 6 days is brought in looking lethargic. What is the
appropriate initial inv?
a. BUE
b. Random blood sugar
c. CBC
d. CXR
e. AXR
Ans. The key is A. BUE. [Electrolyte imbalance should be checked in this baby presenting with diarrhea
and vomiting for considerable time].