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Epidemiologic predictors of 30-day survival in cerebellar hemorrhage
1Division of Neurology, University of Toronto, Toronto Western Hospital, Toronto, Ontario, Canada.
Insights
Cerebellar hemorrhage outcomes are poorly understood. Identifying an underlying cause, rather than hypertension, significantly reduces survival odds at 30 days for cerebellar hemorrhage patients.
Area of Science:
- Neurology
- Epidemiology
Background:
- Cerebellar hemorrhage outcomes are not well understood.
- Limited data exists on risk factors for early mortality.
Purpose of the Study:
- To characterize cerebellar hemorrhage.
- To identify epidemiologic risk factors for early mortality.
Main Methods:
- Retrospective chart review of 629 intracerebral hemorrhages (ICD-9-CM 431) from 1986-1996.
- Analysis of 79 cerebellar hemorrhage cases.
- Multivariable logistic regression to predict 30-day mortality.
Main Results:
- Cerebellar hemorrhages accounted for 12.5% of cases.
- 30-day mortality was 41.7%.
- Identifiable underlying causes (31.7%) were associated with reduced 30-day survival (OR=0.24, 95% CI 0.08-0.74).
Conclusions:
- Cerebellar hemorrhage with an underlying cause is more fatal.
- Findings highlight the importance of identifying etiology in cerebellar hemorrhage.
Background:
Outcome after cerebellar hemorrhage is relatively poorly understood.
Objectives:
To describe cerebellar hemorrhage and to establish if there were epidemiologic risk factors associated with early mortality.
Methods:
Computerized records were searched to identify intracerebral hemorrhage (ICD-9-CM code 431) from 1986 to 1996 at 2 hospitals. Charts were abstracted using a standardized protocol. The provincial vital statistics registry was used to confirm mortality data. A multivariable logistic regression model was developed to identify predictors of 30-day mortality.
Results:
Of 629 identified cases of intracerebral hemorrhage, 79 (12.5%) were cerebellar. The 30-day mortality was 41.7%. Approximately one third (31.7%) had an identifiable underlying cause. The odds of survival at 30 days was significantly reduced (odds ratio = 0.24; 95% confidence interval, 0.08 to 0.74) if the hemorrhage was caused by an identifiable underlying cause.
Conclusions:
Cerebellar hemorrhage with an underlying cause is more likely to be fatal than idiopathic or hypertensive cerebellar hemorrhage.
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