A 3-year-old girl is brought to the emergency department after being found with an open bottle of iron supplements that belonged to her mother. The mother estimates that the child may have ingested multiple pills. The child is irritable and vomiting and has abdominal pain. Her vitals are: • Temperature: 37.8°C (100°F) • Heart rate: 140/min • Blood pressure: 85/50 mmHg Laboratory results: • Arterial pH: 7.30 • Anion gap: 20 • Serum iron level: 450 mcg/dL (normal: 50–150 mcg/dL) • Glucose: 65 mg/dL An abdominal X-ray shows multiple radiopaque pills in the stomach and intestines. Question: Which of the following is the most appropriate initial treatment for this patient?
