NPPB and chronic thromboembolic pulmonary hypertension: The significant clinical improvements in WHO Functional Class, NT‐proBNP levels, RAA, RVID, and hemodynamic parameters such as mPAP and PVR observed at 3 and 6 months post‐BPA, underscore the efficacy of BPA in ameliorating disease severity and reversed RV remodeling for CTEPH patients.