Biochemistry at The Biology Project

Clinical Correlates of pH Levels
Problem Set

Problem 8: Chronic compensation for diet rich in acid

Your patient presents with the following blood gases. When questioned about his diet, he admits to binging on citrus fruits in the past few weeks, and his favorite drinks are grapefruit and tomato juice.

Patient's
Value
Normal
Value
pH 7.32 7.35-7.45
pCO2 25 mm Hg 35-45 mm Hg
[HCO3-] 15 mmol/liter 24-28 mmol/liter

What condition does this patient appear to have?

A. compensated respiratory acidosis
B. compensated metabolic acidosis
Decreased HCO3- together with decreased pH signals a metabolic acidosis. The lowered pCO2 is due to compensation in the lung, which nearly normalizes blood pH.
C. uncompensated respiratory acidosis
D. uncompensated metabolic acidosis

[Problem 8] [Tutorial] [Problem 9]

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January 19, 1999
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