Paramedics brought an 18-year-old male to the ED after he was stabbed in the chest during an altercation at Highpoint Mall, Melbourne. On assessment, the patient is pale, diaphoretic, and in severe respiratory distress. Vital signs: BP 88/50 mmHg, HR 135 bpm, and SpO 88% on room air. The medical team noticed decreased breath sounds on the left side and tracheal deviation to the right. The team suspects a tension pneumothorax.

What is the priority intervention the nurse has to prepare to assist the emergency medical team with in this situation?

Question

Paramedics brought an 18-year-old male to the ED after he was stabbed in the chest during an altercation at Highpoint Mall, Melbourne.  On assessment,  the patient is pale, diaphoretic, and in severe respiratory distress.  Vital signs:  BP 88/50 mmHg, HR 135 bpm, and SpO 88% on room air. The medical team noticed decreased breath sounds on the left side and tracheal deviation to the right. The team suspects a tension pneumothorax.

What is the priority intervention the nurse has to prepare to assist the emergency medical team with in this situation?

BlackTom AI · Accepted Answer

Tension pneumothorax produces increasing intrapleural pressure that collapses the ipsilateral lung and shifts the mediastinum, rapidly reducing venous return and cardiac output.

1. Relevant knowledge points and concepts
- Classic signs: hypotension, tachycardia, respiratory distress, hypoxia, absent or decreased breath sounds on the affected side, and tracheal deviation away from the affected side — all present here (left-sided decreased breath sounds, tracheal deviation to the right, BP 88/50, HR 135, SpO2 88%).
- Pathophysiology: a one-way air leak into the pleural space increases intrathoracic pressure, compresses the lung and great veins, causing obstructive shock.
- Emergency management: immediate decompression of the pleural space (needle decompression) to relieve pressure, followed rapidly by definitive management with tube thoracostomy (chest drain).

2. Step-by-step reasoning process
- Recognize this is a life-threatening tension pneumothorax based on clinical signs and hemodynamic instability.
- Because it is a clinical diagnosis and the patient is unstable, do not delay for imaging (chest X-ray would waste critical time).
- The immediate lifesaving action is to decompress the pleural space to restore venous return and oxygenation.
- After immediate needle decompression (e.g., large-bore cannula at 2nd intercostal space MCL or 5th ICS midaxillary), prepare and perform insertion of a chest drain for definitive management.

3. Calculations/intermediate steps
- No numerical calculations required; procedural steps include selecting appropriate needle/catheter (e.g., 14G), preparing aseptic technique, identifying the 2nd intercostal space at the midclavicular line (or 5th ICS midaxillary), and inserting needle just above the rib.

4. Why the correct answer is correct
- Needle decompression promptly relieves intrathoracic pressure and can be life-saving immediately. Chest tube insertion provides definitive evacuation of air and ongoing re-expansion of the lung. Together these address the underlying emergency physiology.

5. Why other options are incorrect
- Administering oral analgesia: delays life-saving decompression and is inadequate for hemodynamic compromise.
- Waiting for chest X-ray: inappropriate in unstable patients; treatment is based on clinical diagnosis.
- Positioning the patient lateral: does not treat the cause and may hinder emergency procedures; standard management is immediate decompression with the patient supine or semi‑upright as tolerated.

6. Conclusion
The priority intervention is to assist the medical team to perform needle decompression and chest drain insertion. This matches the provided answer: Assist the medical team to perform needle decompression and chest drain insertion.

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