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.
Symptoms of pulmonary hypertension do not usually occur until the condition has progressed. The first symptom of pulmonary hypertension is usually shortness of breath with everyday activities, such as climbing stairs. In more advanced stages of the disease, even minimal activity will produce some of the symptoms.