Assignment task:
A 38-year-old woman is admitted with a chief complaint of shortness of breath and polyuria for the past 6 weeks. She is hypotensive. Her pulse rate is 110 bpm, and her lungs are clear to auscultation. Her laboratory test results are as follows: pH 7.32; sodium 131 mEq/L; glucose 600 mg/dL; PaCO2 28 mm Hg; potassium 4.5 mEq/L; creatinine 1.4 mg/dL; HCO3-14 mEq/L; chloride 95 mEq/L; BUN 30 mg/dL.
What fluid and electrolyte or acid-base disorder is the patient experiencing?