Fig. 2.

Network geometry shows nodes as reported respiratory mechanic parameters or ventilator settings and studies reporting a couple of parameters as lines. The size of the nodes is proportional to the number of patients with that reported parameter. The thickness of the connecting line is proportional to the number of studies that report both the connected parameter. Abbreviations: PEEP, positive end-expiratory pressure; FiO₂, fraction of inspired oxygen; Crs, compliance of the respiratory system; Pplat, plateau pressure; RR, respiratory rate; ΔP, driving pressure; TV, tidal volume