Elsevier NCLEX Exam Review
Question: A practitioner orders additional diagnostic studies to assess a client's acid-base status. The laboratory value that indicates metabolic acidosis is:
1. Urine pH of 8.4
2. Gastric content pH of 6.0
3. Venous serum pH of 7.28
4. Arterial plasma pH of 7.40
Answer: 3
Rationale: The expected range of venous pH is 7.31 to 7.41; any condition that decreases bicarbonate anion concentration in extracellular fluid results in metabolic acidosis. Options 1 and 2 are not accurate assessments for metabolic acidosis. Option 4 is within the expected range.
This week’s NCLEX exam practice question came from:
Nugent: Mosby's Review Questions for the NCLEX-RN Exam, 7th edition, Chapter 2, pg 37, question 356
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