Fig. 1
From: Estimated dead space fraction and the ventilatory ratio are associated with mortality in early ARDS
Association between estimated dead space fraction calculated by the Harris-Benedict formula and mortality at 30 days stratified for covariables at day 2 of mechanical ventilation. Estimated dead space fraction (Harris–Benedict estimate) showing the association between VD/VT separated in tertiles (left: < 0.58/middle: 0.58–0.68 and right: > 0.68) and mortality according to tertiles of PaO2/FiO2 (upper row), PEEP (second row), driving pressure (third row) and compliance of the respiratory system (bottom row)