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.
The signs and symptoms of pulmonary hypertension in its early stages might not be noticeable for months or even years. As the disease progresses, symptoms become worse. Pulmonary hypertension symptoms include: Shortness of breath (dyspnea), initially while exercising and eventually while at rest; Fatigue; Dizziness or fainting spells (syncope)