Which of the following findings is the nurse's immediate concern?

The child's immediate concern is the pain rating of 8/10 with grimacing and crying upon palpation of the right lower quadrant — this is a classic presentation of acute appendicitis. Rebound tenderness at the right lower quadrant (McBurney's point) with fever and elevated heart rate in a child with 2 days of abdominal pain indicates a potential surgical emergency. Delayed bowel movement (constipation), decreased appetite, and penicillin allergy are all important but secondary to recognizing and acting on the acute abdominal pain findings.