Fig. 2From: Symptomatic post COVID patients have impaired alveolar capillary membrane function and high VE/VCO2Relation between symptoms and the main cardiorespiratory variables. FEV1: forced expiratory volume in 1Â s; DLCO: diffusing capacity of the lungs for carbon monoxide (data corrected for hemoglobin; Vcap: capillary volume; peak VO2: peak oxygen intake; VE/VCO2: minute ventilation/carbon dioxide production relationship slopeBack to article page