Pressure (symbol: p or P) is the force applied perpendicular to the surface of an object per unit area over which that force is distributed. Gauge pressure (also spelled gage pressure) is the pressure relative to the ambient pressure.
Cardiogenic pulmonary edema. Pulmonary edema that is due to a direct problem with the heart is called cardiogenic. Congestive heart failure is a common cause of cardiogenic pulmonary edema; in this condition, the left ventricle cannot pump out enough blood to meet the needs of the body. This causes a buildup of pressure in other parts of the circulatory system, forcing fluid into the air sacs of the lungs and other parts of the body.
Edema is swelling caused by fluid retention-excess fluid is trapped in the body's tissues. In the UK/Ireland/Australasia and some other countries, the word is spelled oedema. Swelling caused by edema commonly occurs in the hands, arms, ankles, legs and feet.It is usually linked to the venous or lymphatic systems. Edema is normally caused by a more significant underlying disease or condition. 2  A number of medications appear to cause pedal edema (foot edema). 3  Lucentis (ranibizumab injection) is an FDA-approved treatment for diabetic macular edema.