Blood filling the pleural space is an example of which chest injury?

• A. Hemothorax
• B. Hemopneumothorax
• C. Pneumothorax
• D. Pleural effusion

Answer: (A)

Blood filling the pleural space is a hemothorax. This happens when chest trauma causes bleeding into the pleural cavity, the thin space around the lungs, which restricts lung expansion and can lead to shortness of breath and reduced oxygenation. In exams, this is distinguished from a pneumothorax, where air rather than blood accumulates in that space, typically causing hyperresonance and decreased breath sounds. It’s also different from a hemopneumothorax, which would involve both blood and air in the space, and from a pleural effusion, which is fluid accumulation that isn’t specifically blood and is not always related to trauma.