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Latif, Fakhar; Nasir, Muhammad Moiz; Meer, Komail K.; Farhan, Syed Husain; Cheema, Huzaifa Ahmad; Khan, Adam Bilal; Umer, Mohammad; Rehman, Wajeeh Ur; Ahmad, Adeel; Khan, Muhammad Aslam; Almas, Talal; Mactaggart, Sebastian; Nashwan, Abdulqadir J.; Ahmed, Raheel; Dani, Sourbha S.
International journal of cardiology. Cardiovascular risk and prevention, 06/2024, Volume: 21Journal Article
Dementia is a recognized complication of atrial fibrillation (AF). Oral anticoagulant (OAC) therapy can potentially be protective against this complication. A comprehensive search of MEDLINE and Embase for comparative observational studies reporting the efficacy of OAC therapy for the incidence of dementia in patients with AF was conducted from its inception until March 2023. Studies that had patients with prior use of OAC or with a previous history of dementia were excluded. A total of 22 studies were included in this review involving 617,204 participants. The pooled analysis revealed that OAC therapy, including direct oral anticoagulants (DOACs) and vitamin K antagonists (VKAs), was associated with a reduced incidence of dementia in AF patients. Specifically, compared to non-OAC treatment, OACs demonstrated a significant reduction in dementia incidence (HR 0.68, 95 % CI 0.58, 0.80, p < 0.00001), with similar findings observed for DOACs (HR 0.69, 95 % CI 0.51, 0.94, p = 0.02) and VKAs (HR 0.73, 95 % CI 0.56, 0.95, p = 0.02). The comparison of DOAC vs VKA revealed that DOACs are associated with reduced risk of dementia (HR 0.87, 95 % CI 0.79, 0.96, p = 0.004). Our SR and meta-analysis showed that the use of OAC therapy is associated with a reduced risk of dementia in individuals with AF. However, our results are limited by the potential influence of confounding bias and significant heterogeneity in the analyses.
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