The pressure is computed assuming an International standard sea-level pressure datum of 1013.25 hPa, and therefore is not necessarily the same as the aircraft's true altitude either above mean sea level or above ground level.he pressure is computed assuming an International standard sea-level pressure datum of 1013.25 hPa, and therefore is not necessarily the same as the aircraft's true altitude either above mean sea level or above ground level.
The term pleurisy (pleuritis) is inflammation or infection in the pleural space around the lungs. Pyothorax also known as empyema of the pleural cavity is the presence of pus in the pleural cavity between the layers of the pleural membrane Py/o-Pus.
About Pleurisy. Pleurisy (PLUR-ih-se) is a condition in which the pleura is inflamed. The pleura is a membrane that consists of two large, thin layers of tissue. One layer wraps around the outside of your lungs. The other layer lines the inside of your chest cavity.Between the layers of tissue is a very thin space called the pleural space.leurisy (PLUR-ih-se) is a condition in which the pleura is inflamed. The pleura is a membrane that consists of two large, thin layers of tissue. One layer wraps around the outside of your lungs.