A client receiving mechanical ventilation has a pH of 7.26, PaCO2 of 68 mm Hg, and a PaO2 of 92 mm Hg. Which intervention should the nurse implement?
Decrease expiratory flow time.
Decrease expiratory pressure.
Increase rate of ventilation.
Increase ventilator tidal volume.
The Correct Answer is C
The correct answer is choice C: Increase rate of ventilation.
Choice A rationale:
Decreasing expiratory flow time would not directly address the elevated PaCO2 levels. This intervention is more related to managing expiratory phase issues rather than correcting respiratory acidosis.
Choice B rationale:
Decreasing expiratory pressure might help with certain ventilation issues, but it does not specifically target the elevated PaCO2 and resulting acidosis.
Choice C rationale:
Increasing the rate of ventilation helps to blow off more CO2, thereby reducing PaCO2 levels and correcting the respiratory acidosis indicated by the pH of 7.26 and PaCO2 of 68 mm Hg.
Choice D rationale:
Increasing the ventilator tidal volume could also help reduce PaCO2 by increasing the amount of air exchanged with each breath. However, increasing the rate of ventilation is generally a more immediate and effective intervention for acute respiratory acidosis.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
The correct answer is choice B.
Choice A rationale: Metabolic alkalosis is caused by a loss of acid or a gain of base. It is not typically associated with anxiety or hyperventilation.
Choice B rationale: Respiratory alkalosis is caused by hyperventilation, which leads to a decrease in carbon dioxide levels in the blood. This can occur in response to anxiety, pain, or other stressors.
Choice C rationale: Metabolic acidosis is caused by a buildup of acid in the blood or a loss of bicarbonate. It is not typically associated with anxiety or hyperventilation.
Choice D rationale: Respiratory acidosis is caused by hypoventilation, which leads to an increase in carbon dioxide levels in the blood. It is not typically associated with anxiety or hyperventilation.
Correct Answer is B
Explanation
Choice A rationale:
Reducing the client's interaction with others during the day is not the most appropriate approach in this situation. It may lead to increased social isolation and worsen the client's agitation and delusions. It does not address the client's emotional distress.
Choice B rationale:
Using distraction and therapeutic communication skills is the most suitable approach for a client with dementia who is experiencing agitation and delusional thoughts. Distraction techniques can help redirect the client's focus away from distressing thoughts, and therapeutic communication skills, such as active listening and validation, can help the client feel understood and supported.
Choice C rationale:
Awakening the client earlier for daily morning care may further disrupt the client's sleep patterns and worsen agitation. It does not address the underlying issue of delusional thoughts and the client's emotional distress.
Choice D rationale:
Clarifying reality with the client about delusional thoughts can be counterproductive in dementia care. The client's cognitive impairment may make it challenging for them to understand or accept the clarification, leading to increased frustration and agitation. It is essential to use a more empathetic and therapeutic approach.
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