Definition of cause for English Language Learners. : 1  something or someone that produces an effect, result, or condition : something or someone that makes something happen or exist. : 2  a reason for doing or feeling something. : 3  something (such as an organization, belief, idea, or goal) that a group or people support or fight for.
Though PH patients have 68% probability of surviving after the first year of diagnosis, and the chances decrease to 34% four years later, according Ohio State University Lung Center, early diagnosis is critical in increasing the pulmonary hypertension life expectancy.
About Pulmonary Hypertension. High blood pressure in the lungs is called pulmonary hypertension (PH) or pulmonary arterial hypertension (PAH). PAH is a chronic and life-changing disease that can lead to right heart failure if left untreated. Read about other types of PH. In this short video, Dr. Vallerie McLaughlin explains the basics of pulmonary arterial hypertension (PAH). To learn more about PH and PAH, explore this section or read a PAH Education Fact Sheet developed by the American Thoracic Society (ATS) for their Patient Information Series.