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Recurrent Vomiting in a 6-year-old Boy

Arushi Verma, Lina Merjaneh

Pediatrics in Review, 2021

Abstract

A 6-year-old boy presents to the emergency department (ED) with a 1-day history of nonbilious, nonbloody vomiting occurring every 1 to 2 hours. He was not tolerating oral fluids and had decreased urination for 24 hours before presentation. He has nasal congestion and discharge but no fever, abdominal pain, or diarrhea. The parent denies sick contacts and the possibility of ingestions. Vital signs are notable for tachycardia (heart rate, 114 beats/min) and mild hypotension (blood pressure, 88/65 mm Hg). Physical examination reveals a lean boy with dry mucous membranes and normal mental status. Shotty cervical lymph nodes are palpated. Tonsils are mildly enlarged without exudates. Abdomen is soft, without localized tenderness. The remainder of the examination findings are normal.The initial laboratory evaluation in the ED demonstrates a normal white blood cell count of 12,200/μL (12.2 × 109/L), a normal sodium level of 139 mEq/L (139 mmol/L), a potassium level of 4.6 mEq/L (4.6 mmol/L), normal liver and kidney function, mild acidosis with a bicarbonate level of 14 mEq/L (14 mmol/L), and hypoglycemia (serum glucose level, 48 mg/dL [2.66 mmol/L]). Urine analysis shows 3+ ketones. He receives a 5-mL/kg dextrose 10% (D10) bolus, a 10-mL/kg normal saline (NS) bolus, and intravenous (IV) ondansetron in the ED. Hypoglycemia improves initially, but the glucose level drops again to 46 mg/dL (2.55 mmol/L), requiring a second 5-mL/kg D10 bolus. A cortisol level at the time of…

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