Figure 2From: Loss of alveolar membrane diffusing capacity and pulmonary capillary blood volume in pulmonary arterial hypertensionAssociation of brain natriuretic peptide (BNP) to lung capillary blood volume (V c ) and to the ratio of membrane diffusing capacity (D m ) and V c . Dm/Vc is inversely related to disease severity measured by BNP whereas Vc correlates directly to BNP. The points represent measurements obtained at time of first visit.Back to article page