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Difficulty: HardPhysiological Adaptation

An orthopedic unit nurse is evaluating a client 36 hours after a closed reduction and intramedullary nailing of a right femoral shaft fracture. The client suddenly exhibits profound agitation, dyspnea, and a feeling of impending doom. Physical assessment reveals a petechial rash on the anterior chest, distended neck veins, and severe diaphoresis. Vital signs are: blood pressure 86/52 mm Hg, heart rate 134 bpm, respiratory rate 36/min, and SpO2 84% on room air. Arterial blood gas (ABG) analysis indicates a pH of 7.54, PaCO2 of 25 mm Hg, HCO3 of 22 mEq/L, and PaO2 of 52 mm Hg. Based on this clinical presentation, which action should the nurse perform immediately?

  1. A
    Prepare to administer intravenous sodium bicarbonate to manage severe metabolic acidosis.
  2. B
    Transfer the client immediately for a stat computed tomography pulmonary angiogram to confirm the diagnosis.
  3. Apply high-flow oxygen via a non-rebreather mask and anticipate the need for mechanical ventilation.Answer
  4. D
    Initiate a rapid infusion of 0.9% sodium chloride to treat early hypovolemic shock.

Answer

Apply high-flow oxygen via a non-rebreather mask and anticipate the need for mechanical ventilation.
The client is exhibiting the classic triad of fat embolism syndrome (FES): respiratory distress, neurological changes (agitation), and a petechial rash following a long-bone fracture. The severe hypoxemia (PaO2 52 mm Hg) and hemodynamic instability require immediate airway and breathing stabilization. High-flow oxygen is the absolute priority to address the profound hypoxia before proceeding with further diagnostics or secondary treatments.

Step-by-Step Solution

1
Analyze the client's history and physical assessment findings.
The client has a recent long-bone fracture and presents with the classic triad of fat embolism syndrome (FES): neurological changes (agitation), respiratory distress, and a petechial rash.
Identifying the underlying pathology is crucial for anticipating complications and directing care.
2
Interpret the vital signs and arterial blood gas (ABG) values.
The client has severe hypoxemia (PaO2 52 mm Hg, SpO2 84%), hypotension, and uncompensated respiratory alkalosis (pH 7.54, PaCO2 25 mm Hg) caused by extreme hyperventilation.
Accurate interpretation determines the severity of the respiratory failure and hemodynamic compromise.
3
Evaluate the hemodynamic state using physical signs.
Distended neck veins combined with hypotension indicate right ventricular strain (obstructive shock) secondary to pulmonary vascular occlusion, ruling out hypovolemic shock.
Differentiating the type of shock prevents harmful interventions, such as inappropriate rapid fluid loading.
4
Apply prioritization principles (Airway, Breathing, Circulation).
The most immediate life-threatening issue is profound hypoxia; therefore, administering high-flow oxygen is the priority action over diagnostics or medication administration.
Basic life support principles dictate that oxygenation and ventilation must be secured before confirming the diagnosis or addressing other imbalances.

Key Concept

Fat Embolism Syndrome (FES) and Obstructive Shock Recognition
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Topics

Physiological Adaptation

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