A nurse reviews the following ABG result:
- pH 7.37
- PaO2 84
- PaCO2 54
- Bicarbonate: 31
- Saturation: 95%
What is the interpretation of this ABG?
Partially compensated Metabolic Alkalosis
Fully compensated Metabolic Acidosis
Fully compensated Respiratory Acidosis
Partially compensated Respiratory Alkalosis
The Correct Answer is C
A. Partially compensated Metabolic Alkalosis: This is incorrect because the pH is within normal limits (7.35-7.45), and the elevated PaCO2 and bicarbonate suggest a respiratory issue rather than a metabolic one.
B. Fully compensated Metabolic Acidosis: This is incorrect because the primary disturbance is respiratory, not metabolic. A compensated metabolic acidosis would typically show a low PaCO2 as compensation.
C. Fully compensated Respiratory Acidosis: Correct. The pH is within the normal range, indicating full compensation. The elevated PaCO2 and bicarbonate reflect a chronic respiratory acidosis that has been compensated by the kidneys.
D. Partially compensated Respiratory Alkalosis: This is incorrect because in respiratory alkalosis, the PaCO2 would be low, not high.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Imbalanced nutrition: Less than body requirements related to decreased oral intake: While this may be relevant, it is not the highest priority in acute appendicitis. Infection prevention is more critical.
B. Risk for infection related to possible rupture of appendix: The primary concern in appendicitis is the risk of rupture, leading to peritonitis and sepsis. This makes infection control the top priority.
C. Chronic pain related to appendicitis: Pain in appendicitis is acute, not chronic. Managing infection risk is more urgent.
D. Constipation related to decreased bowel motility and decreased fluid intake: Constipation is not a priority concern in the context of acute appendicitis. The risk of infection takes precedence.
Correct Answer is B
Explanation
A. Respiratory acidosis: Respiratory acidosis would present with a low pH (below 7.35) and a high PaCO2 (above 45 mmHg).
B. Respiratory alkalosis: This ABG shows a high pH (7.51), low PaCO2 (32 mmHg), and normal HCO3- (26 mEq/L), indicating respiratory alkalosis, typically due to hyperventilation.
C. Metabolic acidosis: Metabolic acidosis would present with a low pH and low HCO3-, but in this case, the HCO3- is normal.
D. Metabolic alkalosis: Metabolic alkalosis would show a high pH and high HCO3-, but the HCO3- in this ABG is normal.
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