Final answer:
The treatment for symptomatic idiopathic pulmonary hypertension (IPH) is vasodilators, which relax the pulmonary arteries.
Step-by-step explanation:
The treatment for symptomatic idiopathic pulmonary hypertension (IPH) is Vasodilators. These medications work by relaxing the pulmonary arteries, which helps to reduce blood pressure in the lungs. This can improve symptoms and increase exercise capacity in patients with IPH.