Stroke, Vol 17, 173-178, Copyright © 1986 by American Heart Association
AM Burke, D Younkin, J Gordon, H Goldberg, T Graham, M Kushner, W Obrist, J Jaggi, M Rosen and M Reivich
We prospectively studied 14 patients with acute cerebral infarctions using
serial 133Xenon inhalation cerebral determination (133Xe-rCBF), scored
neurological examinations, and neuropsychological testing. All patients
underwent the same battery of tests at 3 days, 1 week, 2 weeks, and 4 weeks
after cerebral infarction to determine the prognostic value of early rCBF
studies and the chronological relationship of changes in rCBF to clinical
status. Baseline rCBF within 3 days of symptoms of acute stroke did not
correlate with clinical neurological outcome (r = -0.17, p less than 0.30;
r = -0.18, p less than 0.28, for the two indices of rCBF used). Among the
11 patients demonstrating neurological recovery, 7 improved at 1 week,
significantly before increases in rCBF (p less than 0.05). We conclude that
early baseline rCBF does not predict clinical outcome in patients with
acute cerebral infarctions and that return of neurological function
precedes rather than follows increases in rCBF.
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