A 12-year-old child who has cystic fibrosis and reports difficulty clearing secretions

A 3-year-old child who has an atrial septal defect and a heart rate of 120/min

A 5-year-old child who has type 1 diabetes mellitus and a blood sugar of 150 mg/dL

A 2-year-old child who has diarrhea and reports abdominal pain