What term describes the presence of both air and blood in the pleural space?

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

Answer: (C)

The concept tested is recognizing a mixed collection in the pleural space. When air is present in the pleural space, it’s called a pneumothorax; when blood is present, it’s a hemothorax. If both air and blood are present, the correct term is hemopneumothorax. The prefix hem- means blood, pneumo- means air, and thorax refers to the chest/pleural space, so the name literally describes two different substances in the same space. Pleural effusion, on the other hand, refers to fluid accumulation and does not specify air or blood, so it isn’t the right descriptor here. Recognizing hemopneumothorax matters because management needs to address both the air leak and the bleeding, typically involving chest tube drainage and ongoing monitoring.