Table 2—

Correlation of N-terminal pro brain natriuretic peptide with haemodynamics, right ventricular parameters and 6-min walk distance at baseline (6-MWD)

VariableCorrelation coefficient rp-value
Pra mmHg0.490.008
mPAP mmHg0.280.143
SV,O2 %-0.64<0.001
CI L·min-1·m2-0.450.019
PVRI dynes·s·cm-5·m-20.300.122
RVEDVI mL·m-20.530.004
RVMI g·m-20.370.052
RVEF %-0.79<0.001
6-MWD m-0.510.008
  • Data are presented as n. Pra: right atrial pressure; mPAP: mean pulmonary arterial pressure; SV,O2: mixed venous oxygen saturation; CI: cardiac index; PVRI: pulmonary vascular resistance index; RVEDVI: right ventricular end-diastolic volume index; RVMI: right ventricular mass index; RVEF: right ventricular ejection fraction.