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.
What is pleurisy? Pleurisy is inflammation of the pleura membrane covering the lungs. Pleurisy is also known as pleuritis and can cause chest pain with breathing. Part of a doctor's diagnosis of pleurisy is listening to the chest to check for a distinctive dry and crunching sound with each breath. Seek medical advice about pleurisy if symptoms donât improve or if they get worse after around 3-5 days.