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Difficulty: Very hardPhysiological Adaptation

A client with a history of severe chronic obstructive pulmonary disease (COPD) is receiving non-invasive positive pressure ventilation (NIPPV) for an acute exacerbation. The client's initial arterial blood gas (ABG) values on admission were pH 7.247.24, PaCO 2_2 7676 mm Hg, PaO 2_2 5252 mm Hg, and HCO 3−_3^- 3434 mEq/L. After 90 minutes of continuous NIPPV therapy, a repeat ABG reveals pH 7.317.31, PaCO 2_2 6464 mm Hg, PaO 2_2 6262 mm Hg, and HCO 3−_3^- 3434 mEq/L. Upon entering the room to review these results, the nurse observes that the client is now difficult to arouse, moans only in response to a sternal rub, and exhibits absent gag and swallow reflexes. Which action should the nurse take immediately?

  1. Remove the non-invasive ventilation mask and prepare the client for emergent endotracheal intubation.Answer
  2. B
    Maintain the current ventilation settings and closely monitor the client for continued respiratory improvement.
  3. C
    Collaborate with the respiratory therapist to increase the inspiratory positive airway pressure (IPAP) setting.
  4. D
    Administer the prescribed intravenous methylprednisolone to rapidly decrease bronchial inflammation.

Answer

The nurse must immediately prepare for endotracheal intubation because the client has lost the ability to protect their airway, which is an absolute contraindication for continuing non-invasive ventilation.
Although the client's arterial blood gas values are demonstrating objective physiological improvement (increasing pH, decreasing PaCO2, and increasing PaO2), the clinical neurological assessment indicates severe deterioration. A decreased level of consciousness to the point of responding only to pain, combined with the loss of protective airway reflexes (absent gag and swallow), are absolute contraindications for non-invasive positive pressure ventilation (NIPPV). The risk of emesis and subsequent massive aspiration is critically high. The nurse must recognize that treating the patient's airway patency (the 'A' in ABCs) supersedes the improving ventilation numbers, necessitating immediate endotracheal intubation.

Step-by-Step Solution

1
Analyze the progression of the arterial blood gas values.
The pH has increased, PaCO2 has decreased, and PaO2 has increased, indicating that the NIPPV is effectively improving alveolar ventilation and oxygenation.
To evaluate the physiological effectiveness of the current respiratory intervention.
2
Evaluate the current neurological and airway assessment findings.
The client is obtunded (responding only to pain) and lacks gag and swallow reflexes, demonstrating a profound inability to clear secretions or protect the airway from aspiration.
To determine if the client meets the strict safety criteria required for non-invasive positive pressure ventilation.
3
Synthesize the objective data with the clinical presentation to determine priority.
The life-threatening clinical deterioration (loss of airway protection) supersedes the improving laboratory data. NIPPV is now inherently dangerous, and an advanced airway is required.
Airway patency is the highest physiological priority. A patient must be alert enough to protect their airway to safely use NIPPV.

Key Concept

Clinical indications and contraindications for invasive versus non-invasive airway management during acute respiratory failure.
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Topics

Physiological Adaptation

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