Table 2.
Correlation of ISWD%pred with WHO FC, hemodynamics, dyspnea score and DLco%pred.
| N | r | 95% CI | p | ||
|---|---|---|---|---|---|
| WHO FC | 895 | −0.576 | −0.598 | −0.553 | < 0.001 |
| mRAP | 778 | −0.238 | −0.301 | −0.175 | < 0.001 |
| sPAP | 762 | −0.145 | −0.214 | −0.075 | < 0.001 |
| mPAP | 777 | −0.171 | −0.239 | −0.103 | < 0.001 |
| PVR | 755 | −0.263 | −0.327 | −0.195 | < 0.001 |
| CI | 754 | 0.271 | 0.139 | 0.336 | < 0.001 |
| SmvO2 | 762 | 0.284 | 0.217 | 0.348 | < 0.001 |
| Wedge | 724 | 0.014 | −0.059 | 0.087 | 0.697 |
| Borg Pre | 631 | −0.366 | −0.432 | −0.297 | < 0.001 |
| Borg Post | 617 | 0.032 | 0.111 | −0.047 | 0.433 |
| DLco%pred | 815 | 0.371 | 0.311 | 0.413 | < 0.001 |
ISWD%pred, Incremental Shuttle Walk Test distance percent predicted; WHO FC, World Health Organization functional class; mRAP, mean right atrial pressure; sPAP, systolic pulmonary arterial pressure; mPAP, mean pulmonary arterial pressure; PVR, pulmonary vascular resistance; CI, cardiac index; SmvO2, mixed venous oxygen saturation; ISWD, Incremental Shuttle Walk Test distance; %pred, percent predicted; DLco%pred, diffusion factor across the lung for carbon monoxide percent predicted.