Case 7: clinical characteristics
| First evaluation | After 12 months of high-dose CCB | |||
| At rest | Acute vasodilator testing | At rest | Acute vasodilator testing | |
| WHO functional class | III | II | ||
| 6MWD m | 210 | 310 | ||
| Pra mmHg | 6 | 5 | 6 | 6 |
| P̄pa mmHg | 52 | 25 | 31 | 23 |
| Ppcw mmHg | 10 | 6 | 11 | 9 |
| CO L·min−1 | 6.6 | 7.3 | 7.0 | 6.8 |
| PVR dyn·s·cm−5 | 509 | 208 | 286 | 200 |
CCB: calcium channel blockers; WHO: World Health Organization; 6MWD: 6-min walk distance; Pra: right atrial pressure; P̄pa: mean pulmonary arterial pressure; Ppcw: pulmonary capillary wedge pressure; CO: cardiac output; PVR: pulmonary vascular resistance.