In COPD with chronic respiratory acidosis, what metabolic change accompanies the condition?

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Multiple Choice

In COPD with chronic respiratory acidosis, what metabolic change accompanies the condition?

Explanation:
In COPD, CO2 retention leads to chronic respiratory acidosis. The body's response is renal compensation: the kidneys conserve bicarbonate and excrete more hydrogen ions to buffer the excess acid. This adjustment raises the serum bicarbonate level, so an elevated bicarbonate may be present. This renal buffering helps bring the pH closer to normal despite ongoing CO2 retention. Calcium levels aren’t involved in this compensatory process, and a lack of bicarbonate change would not reflect the chronic adjustment you’d expect.

In COPD, CO2 retention leads to chronic respiratory acidosis. The body's response is renal compensation: the kidneys conserve bicarbonate and excrete more hydrogen ions to buffer the excess acid. This adjustment raises the serum bicarbonate level, so an elevated bicarbonate may be present. This renal buffering helps bring the pH closer to normal despite ongoing CO2 retention. Calcium levels aren’t involved in this compensatory process, and a lack of bicarbonate change would not reflect the chronic adjustment you’d expect.

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