Fig. 4From: Assessment of dead-space ventilation in patients with acute respiratory distress syndrome: a prospective observational studyAgreement between different techniques to calculate the dead-space fraction. Bland-Altman plots comparing dead space fraction (VD/VT) calculated by measurements from Enghoff-Douglas bag (Enghoff-DBag) vs. Bohr volumetric capnography (Bohr-VCap) and Enghoff-indirect calorimetry (Enghoff-InCal) in post-cardiac surgery patients (a and b) and patients with acute respiratory distress syndrome (ARDS) (c and d). Dotted lines represent 95Â % limits of agreement, and dashed lines represent mean biasBack to article page