BPA in CTEPD Without PH

This study is testing balloon pulmonary angioplasty (BPA) — a procedure that opens up blocked or narrowed blood vessels in the lungs — for people who had a pulmonary embolism (a blood clot in the lungs) and still have breathing and exercise problems months or years later, even though their blood pressure in the lungs is not yet elevated. This condition is called chronic thromboembolic pulmonary disease (CTEPD) without pulmonary hypertension. **You may be eligible if...** - You had a pulmonary embolism at least 3 months ago and received appropriate treatment - You still have significant shortness of breath and exercise limitations (NYHA class 2 or higher) - Imaging shows persistent blood flow problems in your lungs - Exercise testing confirms abnormal breathing patterns that cannot be explained by another condition - You completed at least 8 weeks of pulmonary rehabilitation within the past 2 months - You are between 18 and 80 years old and not severely frail **You may NOT be eligible if...** - Your lung blood vessel problems have resolved - You are very frail (CFS score 5 or higher) - You have elevated pulmonary arterial pressure (that would be diagnosed as pulmonary hypertension) Talk to your doctor to see if this trial is right for you.