Heart wave analysis may reveal hidden recovery in lung disease patients

This study looks at whether a special heart pressure wave test can better track recovery in adults with chronic blood clots in the lungs (CTEPH) who are getting a procedure to open blocked arteries (balloon pulmonary angioplasty). Researchers will measure walking distance, heart function, and quality of life before and after treatment. The goal is to see if these new measurements are more useful than standard tests for showing true improvement.