Table 5

Correlation of right heart catheter measures (PVR and mPAP) with non-invasive clinical parameters

R*p ValueR*p Value
WHO class (n = 66)
    RVSP (n = 48)0.56<0.0010.52<0.001
    PAT (n = 46)−0.390.008−0.49<0.001
Pulmonary function
    TLC % (n = 61)0.300.020.210.11
    Tlco % (n = 65)−0.010.88−0.120.33†
    Kco % (n = 65)−0.260.04−0.310.01
    FVC % (n = 62)0.120.340.160.21
    Pao2 (n = 61)−0.270.03−0.230.08
    Paco2 (n = 61)−0.050.71−0.020.91†
    CPI (n = 62)−0.030.830.020.86
6MWT (n = 42)
    6MWT end-test Spo2−0.030.86−0.030.87
    6MWT distance−0.020.92−0.110.48
  • *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.