Acta neurologica Scandinavica. Supplementum
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Acta Neurol. Scand., Suppl.c · Jan 1996
Comparative StudyRegional cerebral blood flow measurements with Xenon-CT in the prediction of delayed encephalopathy after carbon monoxide intoxication.
Reported evaluations of CBF with Xe/CT were performed in 11 patients during the lucid interval following CO intoxication. Results were compared with clinical and SPECT data. ⋯ The symptoms persisted in one of them 15 months later. Their CBF values as well as those in most of the other patients, monitored at the basal ganglia and white matter areas, were in relation with the clinical outcome, However, further studies with a larger number of patients, are needed to confirm the predictive significance of Xe/CT measurements for the long term sequelae of CO poisoning.
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(1) Negative response to acetazolamide challenge test using Xe-CT is a reliable indicator for identifying the hemodynamic compromise. (2) The hemodynamic compromise may be a cause of TIAs in some patients with chronic cerebrovascular occlusive diseases. (3) The brain suffering from hemodynamic compromise actively works to induce collateral blood channels.