Thoracoamniotic Shunting (TAS): A medical procedure that involves placing a shunt to drain fluid from the pleural space into the amniotic cavity. Nonimmune Hydrops Fetalis (NIHF): A condition ...

Medically reviewed by Sanja Jelic, MD The pleura is a two-layered membrane that covers the lung. Between the layers is a small amount of lubricating fluid, known as pleural fluid, which helps cushion ...