A client with liver failure is diagnosed with metabolic acidosis. What pathophysiological mechanism does the nurse recognize is the cause of the client's acid-base imbalance?
A) Volume deficit and loss of gastric acid.
B) Impaired clearance of hydrogen ions.
C) Poor tissue perfusion and anaerobic metabolism.
D) Impaired clearance of lactate.
D) Impaired clearance of lactate.
Explanation: A) Liver failure may present as both respiratory alkalosis and metabolic acidosis. In liver failure, an impairment of lactate clearance increases the H+ concentration in the blood, increasing the acid concentration in the blood and causing metabolic acidosis. The other answer choices are not pathophysiological processes involved in liver failure.
B) Liver failure may present as both respiratory alkalosis and metabolic acidosis. In liver failure, an impairment of lactate clearance increases the H+ concentration in the blood, increasing the acid concentration in the blood and causing metabolic acidosis. The other answer choices are not pathophysiological processes involved in liver failure.
C) Liver failure may present as both respiratory alkalosis and metabolic acidosis. In liver failure, an impairment of lactate clearance increases the H+ concentration in the blood, increasing the acid concentration in the blood and causing metabolic acidosis. The other answer choices are not pathophysiological processes involved in liver failure.
D) Liver failure may present as both respiratory alkalosis and metabolic acidosis. In liver failure, an impairment of lactate clearance increases the H+ concentration in the blood, increasing the acid concentration in the blood and causing metabolic acidosis. The other answer choices are not pathophysiological processes involved in liver failure.
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