Medicine MCQ Answer 31
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This man has a respiratory acidosis. Overdose with drugs that suppress ventilation (e.g., heroin, morphine, barbiturates, methaqualone, and "sleeping pills") often causes hypercapnia. In patients with an intact renal response, the respiratory acidosis causes a compensatory rise in plasma HCO3-, which lessens the fall in pH. However, the renal response requires several days to develop fully. The plasma HCO3- of 26 mEq/L (normal: 22-28 mEq/L) for this man is typical of acute respiratory acidosis with little or no renal compensation.
Choice B reflects metabolic acidosis.
Choice C is normal.
Choice D reflects respiratory alkalosis.
Choice E reflects metabolic alkalosis.
Tags: Acidosis, Multiple Choice
Category: Internal Medicine MCQs , Medicine MCQs
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