Correlation of right heart catheter measures (PVR and mPAP) with non-invasive clinical parameters
| mPAP | PVR | |||
| R* | p Value | R* | p Value | |
| WHO class (n = 66) | 0.23 | 0.06 | 0.25 | 0.04 |
| Echocardiography | ||||
| RVSP (n = 48) | 0.56 | <0.001 | 0.52 | <0.001 |
| PAT (n = 46) | −0.39 | 0.008 | −0.49 | <0.001 |
| Pulmonary function | ||||
| TLC % (n = 61) | 0.30 | 0.02 | 0.21 | 0.11 |
| Tlco % (n = 65) | −0.01 | 0.88 | −0.12 | 0.33† |
| Kco % (n = 65) | −0.26 | 0.04 | −0.31 | 0.01 |
| FVC % (n = 62) | 0.12 | 0.34 | 0.16 | 0.21 |
| Pao2 (n = 61) | −0.27 | 0.03 | −0.23 | 0.08 |
| Paco2 (n = 61) | −0.05 | 0.71 | −0.02 | 0.91† |
| CPI (n = 62) | −0.03 | 0.83 | 0.02 | 0.86 |
| 6MWT (n = 42) | ||||
| 6MWT end-test Spo2 | −0.03 | 0.86 | −0.03 | 0.87 |
| 6MWT distance | −0.02 | 0.92 | −0.11 | 0.48 |
*Pearson or †Spearman correlation coefficient (R) as appropriate.
CPI, composite physiological index; FEV1, forced expiratory volume in 1 s; FVC, forced vital capacity; Kco, transfer factor corrected for alveolar volume; mPAP, mean pulmonary artery pressure; 6MWT, six minute walk test; Paco2, arterial carbon dioxide tension; Pao2, arterial oxygen tension; PAT, pulmonary acceleration time; PVR, pulmonary vascular resistance; RVSP, right ventricular systolic pressure; Spo2, oxygen saturation on pulse oximetry; TLC, total lung capacity; Tlco, transfer factor for carbon monoxide; WHO, World Health Authority.