| Patients | 42 |
| Age years | 49±16 |
| Female % | 60 |
| Body mass index | 30±7 |
| Previous VTE % | 90 |
| Time from VTE to CTED diagnosis months | 14 (27) |
| Time from CTED diagnosis to PEA# months | 8 (5) |
| Time from PEA to first visit¶ months | 6±3 |
| Time from PEA to second visit+ months | 13±2 |
| NYHA functional class II | 20 |
| NYHA functional class III | 22 |
| Creatinine μmol·L−1 | 90±49 |
| N-terminal pro-brain natriuretic peptide§ pg·mL−1 | 51.5 |
| Right heart catheterisation | |
| Patients | 42 |
| PAP mean mmHg | 21 (5) |
| SvO2 % | 72±6 |
| Cardiac index L·min−1·m−2 | 2.6±0.5 |
| Ppaw mmHg | 9±3 |
| PVR dyn·s·cm−5 | 164 (104) |
| 6-min walk test | |
| Patientsƒ | 37 |
| Distance m | 372±117 |
| Baseline SpO2 % | 97±1.8 |
| Minimal exercise SpO2 % | 91 (6) |
| CAMPHOR## | |
| Patients | 36 |
| Symptoms | 15 (13) |
| Activity | 10 (9) |
| Quality of life | 14 (14) |
Data are presented as n, mean±sd or median (interquartile range), unless otherwise stated. VTE: venous thromboembolism; CTED: chronic thromboembolic disease; PEA: pulmonary endarterectomy; NYHA: New York Heart Association; PAP: pulmonary artery pressure; SvO2: mixed venous oxygen saturation; Ppaw: pulmonary artery wedge pressure; PVR: pulmonary vascular resistance; SpO2: arterial oxygen saturation measured by pulse oximetry; CAMPHOR: Cambridge pulmonary hypertension outcome review. #: CTED diagnosis defined by the date of baseline right heart catheterisation; ¶: n = 39; +: n = 31; §: n = 20; ƒ: five patients had shuttle walk instead of 6-min walk test and data was not included; ##: CAMPHOR questionnaire was implemented in 2004.