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06:01
A Thrombotic Stroke Model Based On Transient Cerebral Hypoxia-ischemia
Published on: August 18, 2015
Hypothyroidism as a protective factor in acute stroke patients
Maria Alevizaki1, Margaret Synetou, Konstantinos Xynos
1Endocrine Unit, Department of Medical Therapeutics, Athens University School of Medicine, Athens, Greece. mani@otenet.gr
Clinical Endocrinology
|August 22, 2006
Summary
Hypothyroidism in acute stroke patients may be linked to a better clinical presentation and improved survival. This suggests a potential protective effect, possibly due to reduced stress response or preconditioning from prior transient ischemic attacks (TIAs).
Area of Science:
- Neurology
- Endocrinology
- Clinical Medicine
Background:
- Previous reports suggest hypothyroidism is associated with better survival in the elderly.
- The relationship between thyroid status and acute stroke outcomes requires further investigation.
Purpose of the Study:
- To investigate the association between thyroid status and clinical outcomes in patients experiencing acute stroke.
- To determine if pre-existing hypothyroidism influences stroke severity, presentation, and long-term prognosis.
Main Methods:
- Retrospective analysis of consecutive acute stroke patients (median age 70 years).
- Measurement of total T3, T4, and TSH levels within 24 hours of admission.
- Assessment of stroke severity using the Scandinavian Stroke Scale (SSS) and Glasgow Coma Score (GCS).
- Evaluation of handicap and survival over a 12-month period.
Main Results:
- Patients with elevated TSH (hypothyroidism) showed a higher prevalence of transient ischemic attacks (TIAs).
- The hypothyroidism group exhibited better consciousness levels (GCS 14-15) and milder neurological deficits (SSS score 45-58).
- A tendency towards lower glucose levels on admission and improved one-year survival and handicap outcomes was observed in the hypothyroidism group.
Conclusions:
- Acute stroke patients with laboratory findings indicative of hypothyroidism on admission appear to have a better clinical presentation.
- Improved outcomes in these patients may be attributed to a reduced response to stress and potential endogenous preconditioning from prior TIAs.
- Thyroid status is a significant factor influencing acute stroke patient outcomes and warrants further research.
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