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Difficulty: MediumInitial Stabilization and Triage

A 28-year-old man is brought to the emergency department via ambulance after being involved in a high-speed motor vehicle collision. The paramedics report he was the unrestrained driver of the vehicle. He is highly agitated, confused, and in severe respiratory distress. His past medical history is unknown. Vital signs are temperature 36.9°C (98.4°F), blood pressure 75/40 mmHg, pulse 142/min, and respirations 36/min. Pulse oximetry shows 84% on a 15 L/min non-rebreather mask. Physical examination reveals a large contusion over the right anterior chest wall. The neck veins are markedly distended. Lung auscultation demonstrates completely absent breath sounds over the right hemithorax. The trachea is visibly deviated to the left. Which of the following is the most appropriate next step in the management of this patient?

  1. Perform a right-sided needle thoracostomyAnswer
  2. B
    Obtain a portable chest radiograph
  3. C
    Transport the patient for a computed tomography scan of the chest
  4. D
    Perform endotracheal intubation with positive pressure ventilation
  5. E
    Administer a rapid 1-liter bolus of intravenous crystalloid

Answer

The most appropriate next step in management is to perform a right-sided needle thoracostomy to rapidly decompress the tension pneumothorax.
This patient presents with classic signs of a right-sided tension pneumothorax resulting from blunt chest trauma. The combination of profound hypotension, tachycardia, absent breath sounds on the right, distended neck veins, and tracheal deviation to the contralateral side indicates obstructive shock. The markedly increased intrathoracic pressure compresses the superior and inferior vena cava, drastically reducing venous return and cardiac output. Because tension pneumothorax is rapidly fatal, it must be diagnosed clinically and treated immediately. The most appropriate next step is emergent pleural decompression via needle thoracostomy (or finger/tube thoracostomy) on the affected side to restore venous return and stabilize the patient's hemodynamics. Diagnostic imaging should never delay this life-saving intervention.

Step-by-Step Solution

1
Assess the patient's clinical presentation and vital signs.
The patient exhibits profound hypotension, tachycardia, hypoxia, absent right-sided breath sounds, jugular venous distention, and tracheal deviation to the left following blunt chest trauma.
Initial triage and the primary survey identify life-threatening physiological abnormalities that must be addressed immediately.
2
Establish a clinical diagnosis based on physical examination findings.
The constellation of findings represents a right-sided tension pneumothorax leading to obstructive shock.
Air accumulates in the pleural space, increasing intrathoracic pressure, collapsing the right lung, and shifting the mediastinum, which severely impairs venous return to the heart.
3
Determine the most immediate, life-saving stabilizing intervention.
Perform a right-sided needle or finger thoracostomy immediately.
Tension pneumothorax is a clinical diagnosis that requires emergent empirical decompression before any diagnostic imaging is obtained to restore venous return and cardiac output.

Key Concept

Tension pneumothorax is a life-threatening clinical diagnosis characterized by hypotension, absent breath sounds, jugular venous distention, and tracheal deviation; it requires immediate empirical decompression (e.g., needle thoracostomy) prior to any diagnostic imaging.
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Topics

Initial Stabilization and Triage

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