What is one common cause of pleural effusion?

Congestive heart failure is a common cause of pleural effusion because it leads to increased pressure in the pulmonary circulation, which can cause fluid to leak into the pleural space. In cases of heart failure, the heart's inability to pump effectively increases venous pressure, resulting in transudative pleural effusions. This accumulation of fluid in the pleural cavity can complicate the clinical picture, leading to symptoms such as shortness of breath and chest discomfort.

Other conditions can also lead to pleural effusion, but congestive heart failure is particularly prevalent as a cause due to the interconnected nature of the cardiovascular and respiratory systems. In cases where the heart is struggling to handle the volume of blood efficiently, fluid buildup can manifest as pleural effusion, making it a significant clinical concern in patients with heart failure.