Can you reverse pulmonary hypertension?

Pulmonary hypertension affects only the pulmonary arteries, the vessels that transport blood from the right side of the heart to the lungs. The vessels narrow and thicken, tighten, or develop blood clots. These changes can severely limit blood flow, which boosts pressure in the pulmonary arteries. Sometimes the higher pressures are transient. More often the goal is to slow disease progression, ease symptoms and improve quality of life.