Figure 1From: Early brain injury linearly correlates with reduction in cerebral perfusion pressure during the hyperacute phase of subarachnoid hemorrhageSpontaneous and ICP controlled SAH. Scheme depicts start (down arrow) and stop (red X) procedures of shunt-induced SAH. (A) ‘Spontaneous SAH’. The shunt is closed after ICP either reached a plateau (10 s; short horizontal arrow) or started to decrease (30 s; long horizontal arrow). (B) ‘Controlled SAH’. The shunt is closed at any level prior to development of ICP plateau.Back to article page