Final answer:
The background therapy for PAH includes lifestyle changes and medical treatment options such as drug therapy. Surgical interventions may be necessary in severe cases.
Step-by-step explanation:
The background therapy for PAH may include lifestyle changes such as weight loss, regular exercise, and adopting a diet low in sodium and saturated fats.
Medical treatment options for PAH include the use of drugs such as blood pressure medications, cholesterol-lowering medications, calcium channel blockers, and nitroglycerin.
In more severe cases, surgical interventions like angioplasty, coronary stent placement, coronary artery bypass grafting, and endarterectomy may be necessary to address blocked coronary arteries.