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Clinical profiles of cerebrovascular disorders in a population-based patient sample
S Eriksson1, K Asplund, E Hägg
1Department of Medicine, University Hospital, Umeå, Sweden.
Insights
This study details stroke types in 409 patients, finding men over 50 have a higher stroke risk. Intracerebral hemorrhage and ischemic stroke show distinct clinical features and risk factors.
Area of Science:
- Neurology
- Epidemiology
- Cerebrovascular Disease
Background:
- Acute stroke presentation varies significantly across different etiological subtypes.
- Understanding the clinical characteristics and risk factors for each stroke type is crucial for effective management.
- Previous research has not comprehensively detailed the comparative features of various acute stroke classifications in a defined population.
Purpose of the Study:
- To investigate and compare the clinical features of different acute stroke subtypes.
- To determine the prevalence of intracerebral hemorrhage, transient ischemic attack (TIA), and embolic versus non-embolic brain infarction.
- To identify demographic and clinical risk factors associated with specific stroke types.
Main Methods:
- A prospective study of 409 patients admitted for acute stroke (excluding subarachnoid hemorrhage) in a defined population.
- Cerebrovascular diagnosis confirmed through detailed clinical evaluation and CT scans.
- Data collection included patient history (hypertension, previous stroke), blood parameters (hemoglobin, hematocrit), and clinical presentation severity.
Main Results:
- Stroke risk in individuals over 50 was 1.40:1 (men:women), with higher male risk up to age 80.
- Prevalence: 11% intracerebral hemorrhage, 13% TIA, 51% non-embolic infarction, 25% embolic infarction.
- Intracerebral hemorrhage patients had higher systolic blood pressure and more severe symptoms than ischemic stroke patients.
- TIA preceded hemorrhage in 11% and infarction in 15-20% of cases.
- Ischemic stroke showed male predominance and association with heart disease and diabetes.
Conclusions:
- Significant differences exist in clinical presentation and risk factors among stroke subtypes.
- Intracerebral hemorrhage is associated with elevated blood pressure and severity, while ischemic stroke is linked to male sex, heart disease, and diabetes.
- TIA serves as a potential warning sign preceding both hemorrhagic and ischemic events, underscoring the need for prompt evaluation.
Abstract:
Clinical features of different types of stroke were investigated in a sample of 409 patients representative of all cases admitted for acute stroke, except subarachnoidal hemorrhages, within a well defined population. A specific cerebrovascular diagnosis was obtained by detailed clinical investigation, including CT scan. In people greater than 50 years old, men/women risk for stroke was estimated to be 1.40:1. The risk was higher in men up to the age of 80; above this age similar risk for the two genders was observed. Eleven per cent had intracerebral hemorrhage, 13% TIA, 51% non-embolic and 25% embolic brain infarction. In all diagnostic categories there were similar proportions of patients who had a history of hypertension and previous stroke, neither did hemoglobin and hematocrit levels differ between the different stroke disorders. TIA preceded intracerebral hemorrhage in 11% and brain infarction in 15-20%. As opposed to patients with ischemic lesions, subjects with intracerebral hemorrhage had higher systolic blood pressure levels and more severe symptoms on admission to hospital. Ischemic stroke was associated with male predominance, different ischemic manifestations of heart diseases and diabetes.