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Risk of Stroke After Traumatic Brain Injury: a Systematic Review and Meta-analysis

Overview
Publisher Springer
Specialty Neurology
Date 2024 Nov 22
PMID 39576497
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Abstract

Background: Traumatic brain injury (TBI) is a major cause of death and disability in the United States. There is a suggested association between TBI and stroke, emphasizing the need for increased medical monitoring post-trauma. We conducted a systematic review and meta-analysis to investigate the link between previous TBI and the future diagnosis of any type of stroke.

Methods: A comprehensive search was conducted on PubMed, Google Scholar, and Cochrane Library to find eligible studies investigating the association between TBI and long-term risk of stroke.

Results: Out of 2,378 studies, 11 articles met the inclusion criteria for our meta-analysis. The pooled analysis showed that the patients who had a history of TBI were at greater risk for stroke than patients in the control group (random-effect HR = 1.59, 95% CI 1.37-1.85, p < 0.001, I = 97%). The risk of ischemic stroke in TBI patients was greater than in non-TBI patients (random-effect HR = 1.52, 95% CI 1.36-1.70, p < 0.001, I = 93%). Additionally, there is a strong correlation between TBI and hemorrhagic stroke (random-effect HR = 4.68, 95% CI 2.93-7.49, p < 0.001, I = 93%).

Conclusion: Our results indicate that there is a relationship between TBI and long-term risk of stroke, regardless of the stroke type. The risk is elevated in the first months post-injury and continues to be high in the years following the trauma. Individuals with moderate to severe TBI face a higher risk of developing a post-TBI stroke than those with mild TBI.

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