Congestive Heart Failure is a condition that due because the heart muscle is damaged or overworked. The damage can result in blood pressure, myocardial infarction, atherosclerosis, a congenital heart defect, heart muscle disease, disease of the heart valves as a result of past rheumatic fever or other causes, infection of the valves heart and / or heart muscle itself (endocarditis and / or myocarditis), or blood pressure in the lungs resulting from lung disease. http://www.biblehealth.com/Congestive-Heart-Failure/congestive-heart-failure/

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I can understand now the role of CPAP in patient with acute LVF and pulmonary oedema but please indicate the meaning of C , P, A and P