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CLINICAL TRIAL
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JOURNAL ARTICLE
Relationship between short-term outcome and occurrence of cerebral artery stenosis in survivors of bacterial meningitis.
Journal of Neurology 1998 Februrary
To evaluate the influence of cerebral artery stenosis on the outcome of patients with bacterial meningitis we examined prospectively 47 consecutive patients [33 men, 14 women, mean (SD) age, 53 (17) years, range 18-81] with bacterial meningitis caused by various bacterial pathogens. The patients were examined with the use of the Glasgow Coma Scale (GCS) on days 1, 3, 5, 8, 14 and with the use of the Glasgow Outcome Scale (GOS) on day 21 after admission. In addition, focal cerebral signs were recorded separately. At each clinical examination, the patients underwent transcranial Doppler sonography recordings of the mean blood velocity (MBV) and the pulsatility index in all of the main intracranial arteries and in the submandibular internal carotid artery (ICA). A stenosis of the middle cerebral artery (MCA) was diagnosed by an MBV of > or = 120 cm/s or by an MBV ratio > 3 between the MCA and the ICA. An anterior cerebral artery (ACA) stenosis was indicated by an MBV > or = 100 cm/s, a posterior cerebral artery (PCA) stenosis by an MBV of > or = 85 cm/s, and a basilar artery (BA) stenosis by an MBV of > or = 95 cm/s. Twenty-five patients developed stenosis of the cerebral arteries (apart from 1, all within 8 days), 22 patients remained without stenosis. Of 29 focal cerebral signs, 27 occurred within 8 days. For outcome analysis, outcome was classified into two groups: not handicapped (GOS 5) versus handicapped (GOS 2-4) and dead (GOS 1). Based on the disease course up to day 8, risk factors for a handicapped/dead outcome after day 8 were advancing age (odds ratio per year, 1.06; 95% confidence interval (CI), 1.01-1.11; P = 0.03) and the presence of arterial stenosis (odds ratio, 7.3; 95% CI, 1.1-45) using a multivariate logistic regression analysis model. GCS on day 1, cerebrospinal fluid total protein content and the presence of focal cerebral signs were not significantly related to outcome in this series. The patients with stenosis exhibited significantly more frequently a poorer GCS on days 1-5 (Mann-Whitney U test; P < 0.05). In conclusion, the early occurrence of stenosis of the cerebral arteries in bacterial meningitis predicted a worse clinical course of the disease and a poorer short-term outcome of the survivors.
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