A 34 year old woman is brought to the emergency department b…
A 34 year old woman is brought to the emergency department by her boyfriend for worsening lethargy. He reports that she has no known medical history and was doing well until 2 days ago after they returned home from a hiking trip on the Appalachian trail. She started experiencing diarrhea after drinking from the fresh springs. Vital signs are as follows: temperature 37.8°C, BP 97/64 mm Hg, HR 112, and RR 14 breaths/min. On physical examination, abdominal examination reveals tenderness in the left lower quadrant and weak radial pulses.Sodium 144 mEq/L (mmol/L)Potassium 3.9 mEq/L (mmol/L)Chloride 110 (mmol/L)Bicarbonate 18 (mmol/L)BUN 42 mg/dLCreatinine 1.2 mg/dLGlucose 123 mg/dLUrine sodium 24 mEq/LWhat is the next BEST step in management of this patient’s condition?