Pulmonary Hypertension Institutional Registry at Hospital Italiano de Buenos Aires

This is a registry study tracking patients with pulmonary arterial hypertension (PAH) — a serious condition where blood pressure in the arteries leading to the lungs is dangerously high — at a hospital in Buenos Aires, Argentina, to improve understanding and treatment of this disease. **You may be eligible if...** - You are 18 years or older - You have been diagnosed with pulmonary arterial hypertension (Group 1 PAH) based on specific measurements of blood pressure in your lung arteries - You are registered at the PAH clinic at Hospital Italiano de Buenos Aires **You may NOT be eligible if...** - You have not been formally diagnosed with Group 1 PAH - You are not a patient at Hospital Italiano de Buenos Aires - You are under 18 years old Talk to your doctor to see if this trial is right for you.