Figure 2. The relationship between (A) lung diffusing capacity for carbon monoxide (DLCO, top), (B) alveolar‐capillary membrane conductance (Dm, middle), and pulmonary capillary blood volume (Vc, bottom) and (C) pulmonary artery compliance (PAC) at rest (circles), a fixed work rate (20 W, squares), and symptom‐limited maximal exercise (triangles).
Mean and standard error shown for each stage. HFpEF indicates heart failure with preserved ejection fraction.