Problem: LH is an 18-year-old female who presents to the ED with a 2-day history of nausea, vomiting, and diarrhea. She has a 4-year history of insulin dependent-diabetes mellitus. She has just arrived from Florida today by bus and states that she left her insulin in a bathroom 3 days ago. She tried not to eat much on the trip to keep her blood sugar from going too high. On physical exam she is afebrile, pulse 110, BP 90/70, respiratory rate of 28. Her exam is essentially unremarkable except her breath has a fruity odor, and her oral mucosa appears dry. Laboratory studies: pH 7.14 (normal = 7.4) PO2 90 mmHg (normal > 95) Sodium 128 mEq/L (normal = 136-145) Potassium 5.8 mEq/L (normal = 3.5-5) Chloride 90 mEq/L (normal = 100-106) Bicarbonate 8 mEq/L (normal = 24) Plasma glucose 756 mg/dL (normal = 60-100) BUN 42 mg/dL (normal = 8-12) Serum creatinine 2.8 mg/dL (normal = 0.8-1.2), Which of the following best describes the above patient's primary acidbase disturbance? Proceed Copyright ? 2015-2023 i-Human Patients, a part of Kaplan, Inc. All rights reserved. Metabolic alkalosis Metabolic acidosis Respiratory acidosis Respiratory alkalosis