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Therapeutic efficacy after percutaneous transluminal angioplasty in patients with Takayasu arteritis and pulmonary hypertension. (A) 6 min walk distance (6-MWD). (B) N-terminal pro-brain natriuretic peptide (NT-proBNP) level. (C) Pulmonary vascular resistance (PVR); (D) Cardiac index (CI).
