A 30-year-old male involved in a high-speed motor vehicle collision arrives hypotensive (BP 75/40 mmHg) and tachycardic (HR 135 bpm). Trachea is shifted to the left, and breath sounds are absent on the right with hyperresonance to percussion. What is the immediate life-saving procedure?

Answer and explanation

Correct answer: A. Immediate needle decompression in the second intercostal space

  1. Step 1: The clinical signs (severe hypotension, absent right breath sounds, hyperresonance, and tracheal deviation away from the affected side) diagnostic of right-sided tension pneumothorax.
  2. Step 2: This is a clinical diagnosis requiring immediate needle decompression (large-bore cannula in the 2nd intercostal space at mid-clavicular line, or 4th/5th at anterior axillary line) followed promptly by tube thoracostomy. Diagnostic imaging should not delay decompression.
Answer
Immediate needle decompression in the second intercostal space.
Why not the others: 'Endotracheal intubation' without decompressing the tension pneumothorax will exacerbate hemodynamic collapse by further raising intrathoracic pressure; 'Urgent diagnostic chest CT' is contraindicated and causes fatal delay; 'Pericardiocentesis' treats cardiac tamponade (muffled heart sounds, distended veins, clear lungs).

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