Management Strategies for Patients With Atrial Fibrillation-Related Ischemic Stroke Despite Oral Anticoagulation

Area of Science:

• Cardiology
• Neurology
• Medical Devices

Background:

• Atrial fibrillation-related ischemic stroke despite oral anticoagulation (AFIDA) poses a significant clinical challenge.
• Left atrial appendage closure (LAAC) is explored as an adjunctive therapy to reduce recurrent stroke events.

Purpose of the Study:

• To evaluate the efficacy and safety of LAAC in patients experiencing ischemic stroke despite oral anticoagulation.
• To compare outcomes between patients treated with oral anticoagulation (OAC) alone versus those receiving additional LAAC.

Main Methods:

• Retrospective analysis of patients with AFIDA treated with OAC alone or with OAC plus LAAC.
• Comparison of 3-year cumulative incidence rates of ischemic stroke, major bleeding, fatal/disabling stroke, and fatal bleeding between groups.
• Propensity score-matched and subgroup analyses were performed.

Main Results:

• No significant difference in ischemic stroke or major bleeding rates between OAC alone and OAC + LAAC groups.
• Lower rates of fatal or disabling stroke and fatal bleeding observed in the OAC + LAAC group.
• Fatal bleeding occurred exclusively in patients on aggressive OAC, highlighting potential risks.

Conclusions:

• LAAC may offer a protective benefit against fatal or disabling stroke and fatal bleeding in AFIDA patients.
• Findings are hypothesis-generating and underscore the need for randomized controlled trials to validate these observations.