pulmonary hypertension is... PULMONARY, meaning lungs and HYPERTENSION, meaning high pressure refers to an abnormally high blood pressure in the blood vessels that feed the lungs.

There are many causes of pulmonary hypertension, such as diseases of the lungs themselves or heart diseases that cause elevations of the pressure in the lungs.

Click HERE for United Therapeutics' explanantion of PH. (look for the small "next" in the pictures)

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