The use of jugular saturation in monitoring patients with subarachnoid hemorrhage

We evaluated the usefulness of monitoring jugular saturation (SjO2) in subarachnoid haemorrhage patients. SjO2 is an index of the global ratio between cerebral blood flow and metabolism. Low SjO2 identified global cerebral flow reduction, as due to low cerebral perfusion pressures or hypocapnia, but not regional ischemic phenomena related to vasospasm.