is pulmonary hypertension chronic?
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.