highly significantp < 0.001
Correlation analysis showed a highly significant correlation of the neopterin/eGFR ratio with NT-proBNP concentrations (rs = 0.438, p < 0.001), cardiac index (rs = −0.383, p < 0.001), right atrial pressure (RAP, rs = 0.172, p = 0.041), pulmonary artery mean pressure (mean PAP, rs = 0.281, p = 0.001) and pulmonary capillary wedge pressure (PCWP, rs = 0.302, p < 0.001).