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Interpret the arterial blood gas results:

pH: 7.46
pCO₂: 30
pO₂: 90
HCO₃: 24
O₂ Sat: 94%
A. Respiratory acidosis.
B. Metabolic alkalosis.
C. Respiratory alkalosis.
D. Normal acid-base balance.

User Sigute
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1 Answer

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Final answer:

The student's arterial blood gas results indicate a condition of respiratory alkalosis, with a pH slightly above the normal range and a reduced pCO₂ level without compensatory changes in bicarbonate levels.

Step-by-step explanation:

To interpret the arterial blood gas results: pH: 7.46, pCO₂: 30, pO₂: 90, HCO₃: 24, and O₂ Sat: 94%, we must compare them to the reference values. A normal arterial blood pH ranges from 7.35 to 7.45. With the provided pH of 7.46, this indicates a slight alkalinity. The partial pressure of carbon dioxide (pCO₂) for a male should be between 35-48 mm Hg, and for a female, 32-45 mm Hg. Thus, the reported value of 30 mm Hg is lower than the normal range, suggesting a reduction in CO₂ concentration. The bicarbonate (HCO₃) level is normal, as it lies within the normal range of 22-29 mM. Given these results, the individual has a blood pH slightly above the normal range and a reduced pCO₂ without a compensatory change in bicarbonate. Hence, this is consistent with a condition of respiratory alkalosis.

User Tod Cunningham
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