Fig. 6

Percentages and absolute numbers of observations with normal (> 20 mmHg), moderately hypoxic (15–20 mmHg), or severely hypoxic (< 15 mmHg) brain tissue oxygen tension (PbtO2, upper figure), as well as metabolic crisis (a lactate/pyruvate ratio > 40 and glucose < 0.2 mmol/L in cerebral microdialysate, lower figure) as stratified according to functional outcome in patients with subarachnoid haemorrhage (SAH). A favourable outcome was defined as a modified Rankin Scale of 0–2 at 6 months after ictus, whereas an unfavourable outcome was defined as a score of 3–6.