Difficulty: Medium
Average Score: 68%
Simulated
Which arterial blood gas (ABG) values should the nurse anticipate in the client with a nasogastric tube attached to continuous suction?
Correct answer
D
Rationale
Continuous nasogastric suction can lead to metabolic alkalosis due to the loss of gastric acid (hydrochloric acid), which reduces hydrogen ions and increases bicarbonate levels. The ABG values in option 4 (pH 7.49, PaCO2 38, HCO3 30) indicate metabolic alkalosis, with an elevated pH and high bicarbonate level, consistent with this condition. Option 1 suggests respiratory acidosis, option 2 suggests metabolic acidosis, and option 3 suggests respiratory alkalosis, none of which align with the expected acid-base imbalance from nasogastric suction.