Paediatricsniche
A 16-year-old girl with anorexia nervosa is reviewed in an outpatient eating disorder clinic. Over the past six weeks her weight has fallen 3 kg to 42 kg; she is 163 cm tall. She is alert and cooperative, eats three supervised meals a day at home with her family, and denies vomiting or laxative use. Her heart rate is 46 beats per minute, blood pressure 96/58 mmHg lying with no postural drop, and temperature 36.2 degrees Celsius. Serum potassium is 4.1 mmol/L (3.5 to 5.5) and phosphate 1.1 mmol/L (0.8 to 1.5). Which one of the following is the most appropriate disposition today?