🏥 USMLE Exam Prep

A patient presents with severe metabolic acidosis. Which compensatory mechanism would the body primarily employ to restore pH balance?

A Decreased respiratory rate
B Increased renal bicarbonate excretion
C Increased respiratory rate
D Increased renal hydrogen ion reabsorption

✓ Correct Answer: Option C

In metabolic acidosis, the primary and fastest compensatory mechanism is increased respiratory rate (hyperventilation). This blows off CO2, reducing plasma carbonic acid and increasing pH towards normal.

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