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Zorluk: OrtaPhysiological Adaptation

During a shift assessment, a client with a history of severe chronic obstructive pulmonary disease (COPD) is found to be lethargic and responds only to painful stimuli. The client was admitted earlier in the day for an acute respiratory exacerbation and is receiving continuous oxygen therapy at 4 L/min via nasal cannula. Stat arterial blood gas (ABG) results reveal a pH of 7.24, PaCO2 of 71 mm Hg, PaO2 of 65 mm Hg, and HCO3 of 32 mEq/L. Which action should the nurse prioritize?

  1. Prepare for the immediate initiation of positive pressure ventilation or endotracheal intubation.Cevap
  2. B
    Increase the oxygen flow rate to 6 L/min via nasal cannula to aggressively treat the hypoxemia.
  3. C
    Administer a prescribed intravenous dose of sodium bicarbonate to directly neutralize the severe acidemia.
  4. D
    Vigorously stimulate the client and instruct them to perform deep breathing exercises to blow off retained carbon dioxide.

Cevap

The priority action is to prepare for the immediate initiation of positive pressure ventilation or endotracheal intubation to address the acute respiratory failure.
The client's clinical presentation of lethargy combined with an ABG showing a pH of 7.24 and a PaCO2 of 71 mm Hg indicates acute respiratory acidosis and carbon dioxide narcosis. This represents impending or actual respiratory failure. Because the client responds only to painful stimuli, they are unable to protect their airway or maintain adequate spontaneous ventilation. The most critical and immediate intervention is to provide ventilatory support through noninvasive positive pressure ventilation (such as BiPAP) or endotracheal intubation.

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1
Analyze the client's neurological status and vital signs.
The client is lethargic and responds only to painful stimuli, indicating severe central nervous system depression.
Altered mental status in a client with COPD often points to dangerous carbon dioxide retention (CO2 narcosis).
2
Interpret the arterial blood gas (ABG) results.
pH 7.24 (acidosis), PaCO2 71 mm Hg (primary respiratory acidosis), HCO3 32 mEq/L (partial metabolic compensation), PaO2 65 mm Hg (mild to moderate hypoxemia).
Understanding the acid-base imbalance confirms that the primary physiological problem is severe hypoventilation leading to acute respiratory acidosis.
3
Determine the priority intervention based on the ABCs (Airway, Breathing, Circulation).
The client cannot maintain an adequate airway or spontaneous ventilation due to the depressed level of consciousness.
When a client fails to ventilate and protect their airway, advanced mechanical support (BiPAP or intubation) becomes the immediate life-saving priority.

Anahtar Kavram

Acute respiratory failure and carbon dioxide narcosis management in COPD
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Konular

Physiological Adaptation

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