Pulmonary Arterial Hypertension (PAH): Who is at greatest risk for developing it? What do practitioners need to know about diagnosing, treatment and the overall prognosis? Host Dr. Jennifer Caudle welcomes Dr. Akaya Smith, Medical Director for Pulmonary Hypertension Program and Assistant Professor of Medicine at the Hospital of the University Pennsylvania. Dr. Smith answers these questions, as well as, the Penn Center of Excellence for Pulmonary Hypertension.