Fig. 3From: Peak oxygen uptake is a strong prognostic predictor for pulmonary hypertension due to left heart diseaseCorrelation between CO, 6MWD, NT-proBNP and peak VO2/kg. VO2, oxygen uptake; CO, cardiac output; 6MWD, 6-min walk distance; NT-proBNP, N-terminal pro-B type natriuretic peptideBack to article page