In tension pneumothorax, tracheal deviation occurs in which direction relative to the injured side?

In tension pneumothorax, tracheal deviation occurs in which direction relative to the injured side?

• A. Toward the injured side
• B. Away from the injured side
• C. No deviation
• D. Upward

Answer: (B)

In tension pneumothorax, air accumulates under pressure on the injured side, pushing the mediastinal structures, including the trachea, away from that side. This shifting helps explain why the trachea deviates toward the opposite side while the injured side becomes increasingly compressed. The away-from-side deviation reflects the rapid buildup of intrapleural pressure and the resulting pull on the mediastinum toward the healthy side, contributing to decreased venous return and lung collapse on the opposite lung. The other options don’t fit this mechanism: shifting toward the injured side would imply pressure pulling the trachea in that direction, which isn’t how tension pneumothorax behaves; no deviation isn’t accurate because mediastinal shift is a hallmark sign; an upward shift isn’t the typical direction for tracheal displacement in this situation.

In tension pneumothorax, air accumulates under pressure on the injured side, pushing the mediastinal structures, including the trachea, away from that side. This shifting helps explain why the trachea deviates toward the opposite side while the injured side becomes increasingly compressed. The away-from-side deviation reflects the rapid buildup of intrapleural pressure and the resulting pull on the mediastinum toward the healthy side, contributing to decreased venous return and lung collapse on the opposite lung.

The other options don’t fit this mechanism: shifting toward the injured side would imply pressure pulling the trachea in that direction, which isn’t how tension pneumothorax behaves; no deviation isn’t accurate because mediastinal shift is a hallmark sign; an upward shift isn’t the typical direction for tracheal displacement in this situation.