What happens if the pleura is punctured from an injury?

If the pleura is punctured from an injury, air can enter the pleural cavity, leading to a condition known as pneumothorax. This can cause the lung on the affected side to collapse, resulting in difficulty breathing, chest pain, and decreased oxygen levels. In severe cases, it may require medical intervention, such as the insertion of a chest tube to remove the air and allow the lung to re-expand. Prompt treatment is crucial to prevent complications and restore normal lung function.