The dangers of pulmonary hypertension
Treatments can help control symptoms and protect the heart.
Pulmonary arterial hypertension (PAH) occurs when the arteries serving the lungs become stiff and thick. Blood pressure in the lungs rises, and the right side of the heart must work harder to pump blood to the lungs. Symptoms tend to mimic those of other more common diseases, so diagnosis is often delayed. As the overworked heart struggles to do its job, its right side gradually begins to fail.