A 15-year-old African American girl presents with fever (maximum temperature of 39.2degC), sore throat, decreased oral intake, headache, vomiting, and dizziness of 2- to 3-day duration. She also experiences breathlessness, which has not been responding to multiple inhaled albuterol treatments at home.On examination, her pulse is 128 beats per minute, respiratory rate is 30 breaths per minute, temperature is 38.5degC, and blood pressure is 90/55 mm Hg in both arms. Her weight is 72.70 kg (>90th percen-tile), and her height 183.00 cm (99th percentile).
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