Clinical Correlates of pH Levels
Problem Set
Problem 8: Chronic compensation for diet rich in acid
Correct!
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
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Department of Biochemistry and Molecular Biophysics
The University of Arizona
January 19, 1999
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