Reassure the parents that this is an expected finding and not uncommon

Call a code for a potential cardiac arrest and stay with the infant

Immediately obtain all vital signs with a quick head-to-toe assessment

The nurse is caring for a 3-month-old being evaluated for possible Hirschsprung disease. His parents call the nurse and show her his diaper containing a large amount of mucus and bloody diarrhea. The nurse notes that the infant is irritable and his abdomen appears very distended. Which should be the nurse&#39;s next action?