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Difficulty: MediumReduction of Risk Potential

A nurse is caring for a 78-year-old client admitted with community-acquired pneumonia and a history of severe chronic obstructive pulmonary disease (COPD). The client suddenly becomes highly restless, disoriented, and repeatedly attempts to remove their nasal cannula. Current vital signs are: Heart Rate 114 bpm, Blood Pressure 148/86 mm Hg, and Respiratory Rate 28 breaths/min. An arterial blood gas (ABG) drawn 15 minutes ago reveals a pH of 7.28, PaCO2 of 65 mm Hg, PaO2 of 57 mm Hg, and HCO3 of 28 mEq/L. To reduce the risk of further physiological deterioration, which action should the nurse take first?

  1. A
    Increase the oxygen flow rate to 6 L/min to rapidly correct the documented hypoxemia.
  2. Place the client in an upright, high-Fowler's position and coach them through pursed-lip breathing.Answer
  3. C
    Apply soft wrist restraints to ensure the continuous delivery of the prescribed oxygen therapy.
  4. D
    Explain to the family that sudden confusion is an expected, age-related change during hospitalization.

Answer

The most appropriate first action is to elevate the head of the bed to a high-Fowler's position and assist the client with pursed-lip breathing to improve gas exchange and reduce trapped carbon dioxide levels.
The client is experiencing acute-on-chronic respiratory acidosis and hypoxemia, which is causing neurological manifestations like restlessness and confusion. The most immediate, safe, and effective action to reduce the risk of respiratory failure is to place the client in a high-Fowler's position to maximize lung expansion and use pursed-lip breathing to help exhale trapped carbon dioxide. This non-pharmacological approach directly addresses the root cause of the agitation without introducing new risks.

Step-by-Step Solution

1
Analyze the arterial blood gas (ABG) results and clinical presentation.
The ABG reveals uncompensated acute-on-chronic respiratory acidosis (low pH, high PaCO2) and hypoxemia. The new-onset restlessness and confusion are classic neurological signs of impaired gas exchange.
Identifying the physiological root cause of the behavioral changes dictates the safest and most effective intervention.
2
Evaluate the risk associated with each potential intervention.
Applying restraints ignores the underlying hypoxia, increasing oxygen too much risks respiratory arrest in a COPD patient, and dismissing the confusion delays life-saving care.
Risk reduction requires selecting an action that stabilizes the client without introducing iatrogenic harm.
3
Select the least invasive, most physiologically beneficial independent nursing action.
Repositioning the client upright maximizes diaphragmatic excursion, while pursed-lip breathing creates positive end-expiratory pressure to keep alveoli open and blow off excess CO2.
This directly treats the respiratory failure, easing the work of breathing and reducing the agitation.

Key Concept

Prioritizing non-invasive respiratory interventions for acute-on-chronic respiratory acidosis
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Topics

Reduction of Risk Potential

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