Pulmonary arterial hypertension (PAH) is a condition where there is too high a blood pressure in the blood vessels which supply blood to your lungs from your heart. The arteries become narrowed so your heart has to work harder to pump blood to your lungs.
This is a companion discussion topic for the original article at https://patient.info/medicine/iloprost-for-pulmonary-arterial-hypertension-ventavis