A 34-Year-Old Man Arrives at the Emergency Room with New-Onset

A 34-year-old man arrives at the emergency room with new-onset confusion and lethargy. Laboratory studies are obtained, including an arterial blood gas. The graph below depicts the changes in his blood gas parameters. Point A represents the patient's physiologic baseline, and point B represents his state upon arrival at the emergency department. Which of the following is the most likely diagnosis?

A) Metabolic acidosis
B) Metabolic alkalosis
C) Respiratory acidosis
D) Respiratory alkalosis

Correct Answer:

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