Fig. 3

A-H. PbtO₂ in combination with ICP, PRx, CPP, and ∆CPPopt—relation to clinical outcome. In (A), the percentage of monitoring time for the concurrent combination of pbtO₂ and ICP was calculated and correlated with GOS. The jet colour range denotes the value of the correlation coefficients, where blue colour indicates association with favourable and red colour indicates association with unfavourable outcome. Areas with limited data were given white colour. In (B), the density plot illustrates the data frequency of certain pbtO₂ and ICP combinations. The jet colour scale denotes the frequency, where blue colour indicates that a certain pbtO₂/ICP combination was common, whereas red colour indicates that a certain pbtO₂/ICP combination was rare. Similar analyses were done for pbtO₂ and PRx in relation to GOS (C, D), pbtO₂ and CPP in relation to GOS (E, F), and pbtO₂ and ∆CPPopt in relation to GOS (G, H). CPP = Cerebral perfusion pressure. CPPopt = Optimal CPP. GOS = Glasgow Outcome Scale. ICP = Intracranial pressure. PbtO₂ = Partial brain tissue oxygenation. PRx = Pressure reactivity index. ∆CPPopt = Actual CPP-CPPopt