Which condition is an open chest wound that allows air to enter the pleural space during inspiration?

• A. Sucking chest wound
• B. Open pneumothorax
• C. Traumatic asphyxia
• D. Hemothorax

Answer: (B)

Open pneumothorax is a chest wall wound that communicates with the pleural space, so air can move between the atmosphere and the pleural cavity. During inspiration, the negative pressure inside the chest draws air through the opening into the pleural space, causing the affected lung to collapse on that side. This matches the scenario of an open chest wound that allows air to enter the pleural space with breathing. Traumatic asphyxia is due to chest compression causing facial cyanosis and venous congestion, not air entry into the pleural space. Hemothorax involves blood in the pleural space, not air. A “sucking chest wound” describes the visible wound and its effect, but the medical term for the condition is open pneumothorax, which is the best fit.