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.
A pleural effusion is a buildup of extra fluid in the space between the lungs and the chest wall. This area is called the pleural space. About half of people with cancer develop a pleural effusion. When cancer grows in the pleural space, it causes a malignant pleural effusion. This condition is a sign that the cancer has spread, or metastasized, to other areas of the body. Common causes of malignant pleural effusion are lymphoma and cancers of the breast, lung, and ovary. Although a malignant pleural effusion is treatable, it can be a serious, potentially life-threatening condition.