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.
Pleurisy (pleuritis) is a type of lung inflammation that causes sharp chest pains when breathing. Here are the causes, symptoms and treatment for pleurisy. Pleurisy (pleuritis) is a type of lung inflammation that causes sharp chest pains when breathing. The pleura is a membrane made up of layers of tissues that line the inner chest cavity and a layer of tissues around the lungs.