Gl. Viale et al., CORTICAL BLOOD-FLOW RECORDED DURING EARLY OR DELAYED SURGERY FOR RUPTURED INTRACRANIAL ANEURYSMS, Acta neurochirurgica, 131(1-2), 1994, pp. 1-5
Forty-three patients were operated on for ruptured intracranial aneury
sms during a 12-month-period. Intraoperative evaluation of cortical bl
ood flow by means of a thermal diffusion probe was performed in 23 out
of the 41 patients who were operated on for aneurysms of the anterior
circulation. The autoregulation index was determined at the time of r
aising the systemic blood pressure after clipping of the aneurysm(s).
No statistically significant difference was found between the averages
of the autoregulation indexes calculated in the subgroups of patients
submitted respectively to early or delayed surgery. There was no corr
elation of both cortical blood flow and autoregulation with either age
of the patients, or preoperative neurological grade. On the contrary,
the autoregulation index showed a statistically significant correlati
on with outcome.