A nurse is caring for a child who has Kawasaki disease. Which of the following systems should the nurse monitor in response to this diagnosis?

Rationale: A. Kawasaki disease does cause integumentary changes (rash, peeling skin on hands/feet), but these are not the most critical complications. B. The cardiovascular system is the priority to monitor because Kawasaki disease can cause coronary artery aneurysms, myocarditis, and dysrhythmias if untreated. Continuous cardiac monitoring and echocardiograms are essential. C. The respiratory system is not the primary concern with Kawasaki disease. D. Gastrointestinal symptoms (such as diarrhea or abdominal pain) may occur but are not the main risk.