End
1 :

Hint : 🫁 CO₂ retention depresses brain function

Correct Answers:

  • Confusion


Rationale :

♠️ Respiratory acidosis occurs when inadequate ventilation causes retention of carbon dioxide (CO₂).

♠️ Increased PaCO₂ causes the blood pH to decrease below 7.35, producing acidemia.

♠️ Excess CO₂ readily crosses the blood-brain barrier and affects central nervous system function.

♠️ Neurologic manifestations can include headache, confusion, decreased level of consciousness, and drowsiness.

♠️ As respiratory acidosis becomes more severe, the client can develop increasing CNS depression.

♠️ The nurse should closely assess mental status, respiratory pattern, oxygenation, and ABG values.

♠️ Severe CO₂ retention can progress to CO₂ narcosis, respiratory failure, and coma if ventilation is not improved.

♠️ Confusion is therefore an expected manifestation of respiratory acidosis caused by the neurologic effects of hypercapnia.


Distractor Analysis :

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