Practice Question
A client requiring prolonged mechanical ventilation has the following arterial blood gas (ABG) results: pH: 7.49; PaO2: 85 mm Hg; PaCO2: 30 mm Hg; HCO3: 25 mEq/L. The nurse interprets these results as
Answer Choices:
Correct Answer:
respiratory alkalosis.
Rationale:
The pH is 7.49, which is alkalotic (normal range: 7.35-7.45).
The PaCO₂ is 30 mmHg, which is low (normal range: 35-45 mmHg).
The HCO₃ is 25 mEq/L, which is normal (normal range: 22-26 mEq/L).
Since the pH is high (alkalotic) and the PaCO₂ is low, this indicates respiratory alkalosis due to excessive CO₂ elimination i.e., hyperventilation.
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This question is from NCLEX~RN Exam 1 which contains 13 questions.
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Question Details
- Category: NCLEX Prep
- Subcategory: NCLEX-RN
- Domain: NCLEX-RN Exam(s)
- Answer Choices: 4
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