Figure 1.

(a) Time period of interest for retrospective analysis. The period most likely to observe neurochemical and metabolic changes spanned from the last negative scan without evidence of infarction (left) to the first positive scan revealing a new infarcted brain area (right). Data were compared across patients whose CMD probes were within versus outside an infarcted area. ASAH, aneurismal subarachnoid hemorrhage and (b) Patient selection. Of the 72 patient files present in the source database, 21 did not display DCI and provided control monitoring values (2 excluded), and 51 showed DCI with cerebral infarction evidenced by CT (24 excluded). Among the 27 patients with infarction related to DCI, 17 and 10 had a CMD probe placed within and placed outside the infarct, respectively. CMD, cerebral microdialysis; DCI, delayed cerebral ischemia; ASAH, aneurismal subarachnoid hemorrhage; CMD, cerebral microdialysis; DCI, delayed cerebral ischemia.