Pulmonary hypertension
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Definition
You've probably heard of high blood pressure (hypertension), a common condition that affects the way your blood flows through the arteries in your body from the left side of your heart. A less common type of high blood pressure, called pulmonary hypertension, affects only the arteries in the lungs and the right side of your heart.
Pulmonary hypertension begins when tiny arteries in your lungs, called pulmonary arteries and capillaries, become narrowed, blocked or destroyed. This makes it harder for blood to flow through your lungs, which raises pressure within the pulmonary arteries. As the pressure builds, your heart's lower right chamber (right ventricle) must work harder to pump blood through your lungs, eventually causing your heart muscle to weaken and sometimes fail completely.
Pulmonary hypertension is a serious illness that becomes progressively worse and is sometimes fatal. Although it isn't curable, treatments are available that can help lessen symptoms and improve your quality of life if you have pulmonary hypertension.
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