Table 1. Baseline clinical information of patients with CTEPH (n = 53).

Baseline parameters
Age (years)	60.6±11.4
Gender (female/male)	37/16
Body surface area (m2)	1.60±0.21
CT-RHC Interval (day, min-max)	2–16
Oxygen therapy	40 (1–6 L/min)
Months from onset of symptoms to CT, median (range)	15 (4–306)
Vasodilators
Oral prostaglandin I2	12
PhosphodiesteraseV inhibitor	15
Endothelin antagonist	8
Monotherapy	14
Double combination therapy	11
Triple combination therapy	0

Data are presented as mean±SD.