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.
Pulmonary arterial hypertension (PAH) is a rare form of high blood pressure. It occurs in the pulmonary arteries that flow from your heart and through your lungs.Constricted and narrowed arteries prevent your heart from pumping adequate blood.When constriction occurs, the heart will need to work harder to compensate.ulmonary arterial hypertension (PAH) is a rare form of high blood pressure. It occurs in the pulmonary arteries that flow from your heart and through your lungs.