what is the va pulmonary
Background. The diffusing capacity of the lung is usually reported as both the diffusing capacity (DLCO) and the diffusing capacity divided by the alveolar volume (DLCO/VA). However, it is unclear which measure to use when interpreting pulmonary gas exchange.he primary reason for this is likely that the DLCO and DLCO/VA are static measures of oxygen diffusing capacity. Yet, the exchange of oxygen under conditions of exercise is very complex, involving alterations in pulmonary blood flow, lung volume and metabolism.