The Nurse Is Caring for a Boy with Probable Intussusception

The nurse is caring for a boy with probable intussusception. He had diarrhea before admission but, while waiting for administration of air pressure to reduce the intussusception, he passes a normal brown stool. Which of the following is the most appropriate nursing action?

A) Notify practitioner.
B) Measure abdominal girth.
C) Auscultate for bowel sounds.
D) Take vital signs, including blood pressure.