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From the Department of Neurology (Drs. Gerriets, Modrau, Seidel, and Kaps, and I. Fiss), Medical University at Lübeck, Germany; and the Department of Neurology (Dr. Stolz), Justus Liebig University, Giessen, Germany.
Address correspondence and reprint requests to Prof. Dr. Manfred Kaps, Medical University at Lübeck, Ratzeburger Allee 160, D-23538 Lübeck, Germany.
BACKGROUND AND OBJECTIVE: Transcranial color-coded sonography (TS) allows a noninvasive, accurate evaluation of lateral displacement of the third ventricle. The authors studied the prognostic value of TS monitoring of the midline shift (MLS) in acute hemispheric stroke. Method: Sixteen patients with acute middle cerebral artery (MCA) occlusion were investigated. On admission, the median modified Scandinavian Stroke Scale (mSSS) score was 6.0 (range, 5 to 8). Five patients died from cerebral herniation (group 1), 10 survived (group 2), and 1 patient (Patient 16) survived after decompressive surgery. TS was performed on days 1 to 4 (10 ± 3, 32 ± 4, 57 ± 5, and 82 ± 5 hours after onset of symptoms). Distance from the TS probe to the center of the third ventricle was measured both from the symptomatic (A) and asymptomatic (B) sides. MLS was calculated using the formula MLS = (A - B)/2.
RESULTS: Ten hours after stroke onset, MLS and mSSS scores were not significantly different between the two groups. At 32, 57, and 82 hours, MLS was higher in group 1 (32 hours, p = 0.001; 57 hours, p = 0.003; 82 hours, p = 0.023) whereas there was no difference in mSSS score after 32 hours. All patients with an MLS < 4 mm at 32 hours survived, whereas patients with an MLS > 4 mm died as a result of cerebral herniation, with the exception of the one patient who underwent decompressive hemicraniectomy.
CONCLUSIONS: The study of MLS at 32 hours after stroke onset in patients with severe MCA infarctions may identify patients who are unlikely to survive. The value of MLS in determining the indication of decompressive craniectomy merits further study.
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 E. Stolz, T. Gerriets, I. Fiss, S. S. Babacan, G. Seidel, and M. Kaps Comparison of Transcranial Color-Coded Duplex Sonography and Cranial CT Measurements for Determining Third Ventricle Midline Shift in Space-Occupying Stroke AJNR Am. J. Neuroradiol., September 1, 1999; 20(8): 1567 - 1571. [Abstract] [Full Text]
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