Pulmonary Hypertension: The Hidden Killer Pulmonary hypertension is, simply put, high blood pressure in the pulmonary region of the body (the lungs). It is a progressive disorder that starts when the blood vessels to the lungs constrict. This makes it more difficult for blood to get through to the lungs, and as a result the heart is forced to pump harder supply the blood that the pulmonary region requires. As time passes the..