Fig. 7.

The serum levels of HGF in chronic thromboembolic pulmonary hypertension (CTEPH) patients (n = 61) and pulmonary thromboembolism (PTE) survivors without evidence of pulmonary hypertension (control group, n = 12). a The HGF serum level in the CTEPH group was higher than that in the control group (0.43 ± 0.25 ng/ml, 0.25 ± 0.04 ng/ml, respectively, p = 0.003). b HGF levels 1 year after PEA was also determined in those 23 patients. There was slight decrease of serum HGF level after PEA. c The difference between pre and post serum HGF level did not correlate with the improvement degree of PVR