What are the causes of pleural effusion

summary

Recently, I feel that my chest is rather stuffy. I can't breathe. The physical examination report just came down. It seems that there is something wrong with my chest. The doctor told me that it might be pleural effusion. The doctor also said some reasons. Now let me talk about the causes of pleural effusion.

What are the causes of pleural effusion

First, pleural effusion is a closed cavity composed of parietal pleura and visceral pleura, in which there is negative pressure. Under normal circumstances, there is a small amount of liquid (about 1-30 ml) between the two pleura to lubricate, reduce the friction between the two pleura in the process of respiratory activity, and facilitate the lung to relax and contract in the chest.

Second, the fluid is produced from parietal pleura and absorbed by visceral pleura. It circulates continuously and is in dynamic equilibrium. The volume of fluid remains constant. When something happens that affects the pleura, whether the pleural effusion produced by the parietal pleura or the pleural effusion absorbed by the visceral pleura changes, the pleural fluid can increase, which is called pleural effusion (effusion).

Third: in the past, it was thought that the exchange of pleural fluid was completely dependent on the pressure difference between hydrostatic pressure and colloidal osmotic pressure. In animals with thin visceral pleura (such as rabbits), the parietal pleura was mainly supplied by intercostal artery, and the capillary pressure was high, while the visceral pleura was supplied by pulmonary artery, and the capillary pressure was low. Therefore, driven by pressure, the fluid filtered from parietal pleura into pleural cavity, and the visceral pleura was mainly supplied by intercostal artery Similar pressure reabsorbs the pleural fluid.

matters needing attention

For patients, if they want to get treatment for their disease, they must understand how it is caused and what they have done. Of course, many reasons are not clear to the patients themselves, so they need to go to the hospital for examination, so that they can effectively treat the disease.