Preoperative evaluation of STA-MCA anastomosis candidates with rCBF studies
We previously reported that regional cerebral blood flow (rCBF) studies performed postoperatively on patients who had had STA-MCA anastomoses for the whole group of “inaccessible” lesions had blood flow values in the ischemic range. There was no significant difference in values of those patients with transient ischemic attacks (TIA) and reversible ischemic neurologic deficits (RIND), with those having completed strokes (CS). This finding led us to postulate that in this particular group of patients—namely, those with TIAs and RINDs secondary to internal carotid (ICA) occlusions and siphon stenoses and middle cerebral artery (MCA) stenoses and occlusions—the etiology of the TIAs and RINDs was secondary to focal or global low perfusion, rather than emboli.(1)
KeywordsRegional Cerebral Blood Flow Focal Ischemia Nonoperated Patient Complete Stroke Hemisphere Status
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