Document Classification

Section Type: RESULTS

Text: After 6 months of therapy, an improvement in clinical status (WHO functional class 2. 1 0. 4 vs 2. 9 0. 3 ; P = 0. 042), 6-minute walk distance (360 51 vs 293 68 m ; P = 0. 005), SpO (2) at the end of the 6MWT (72 10 vs 63 15 % ; P = 0. 047), Borg score (2. 9 1. 5 vs 4. 4 2. 3 ; P = 0. 036), serology (pro-brain natriuretic peptide 303 366 vs 760 943 pg/ml ; P = 0. 008) and haemodynamics (pulmonary blood flow 3. 4 1. 0 vs 3. 1 1. 2 l/min/m (2), P = 0. 002 ; pulmonary vascular resistances index 19 9 vs 24 16 WU/m (2), P = 0. 003) was observed.