This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Request Permissions Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Hedera, P. Articles by Bujdakova, J. Search for Related Content PubMed PubMed Citation Articles by Hedera, P. Articles by Bujdakova, J.

Stroke, Vol 23, 1069-1072, Copyright © 1992 by American Heart Association

ARTICLES

Short-term prognosis of stroke due to occlusion of internal carotid artery based on transcranial Doppler ultrasonography

P Hedera, P Traubner and J Bujdakova
Department of Neurology, Medical School of Comenuis University, Bratislava, Czechoslovakia.

BACKGROUND AND PURPOSE: The clinical course of stroke due to occlusion of the internal carotid artery is influenced by amount of collateral flow. We measured mean frequency shifts in the middle cerebral artery by transcranial Doppler ultrasonography to determine its prognostic value. METHODS: Patients with proven extracranial occlusion of the internal carotid artery and ipsilateral hemispheral stroke were enrolled in our study. We performed transcranial Doppler ultrasonography on 31 patients within 48 hours after the stroke onset and followed up 25 patients in 28 days. At the same time, neurological examination with quantification of neurological deficit was done. We correlated values of flow frequency shifts on the side of stroke with degree of neurological deficit at the onset and at 28 days as well as the degree of clinical improvement and the value of frequency shifts. RESULTS: We found a negative correlation between blood flow frequency shifts in the middle cerebral artery and degree of neurological deficit at the onset (Spearman rank correlation coefficient, -0.567; p less than 0.001). We also found a positive correlation between the change of the neurological deficit during follow-up and frequency shifts at the onset (Spearman rank coefficient, 0.548; p less than 0.05). CONCLUSIONS: Diminished blood flow velocity (mean frequency shift) in the area of stroke is a negative prognostic factor for the degree of neurological deficit at the onset and a negative prognostic factor for possible improvement. Knowledge of hemodynamic conditions in the stroke area may help to improve therapeutic decisions.

This article has been cited by other articles:

				C. Klotzsch, O. Popescu, and P. Berlit Assessment of the Posterior Communicating Artery by Transcranial Color-Coded Duplex Sonography Stroke, March 1, 1996; 27(3): 486 - 489. [Abstract] [Full Text]

				P. Smielewski, P. Kirkpatrick, P. Minhas, J. D. Pickard, and M. Czosnyka Can Cerebrovascular Reactivity Be Measured With Near-Infrared Spectroscopy? Stroke, December 1, 1995; 26(12): 2285 - 2292. [Abstract] [Full Text]

				D. F. Schomer, M. P. Marks, G. K. Steinberg, I. M. Johnstone, D. B. Boothroyd, M. R. Ross, N. J. Pelc, and D. R. Enzmann The Anatomy of the Posterior Communicating Artery as a Risk Factor for Ischemic Cerebral Infarction N. Engl. J. Med., June 2, 1994; 330(22): 1565 - 1570. [Abstract] [Full Text]