Observational studyNeuroradiology2025
Comparison between single and dual antiplatelet therapy in patients on oral anticoagulants undergoing coil embolization for unruptured intracranial aneurysms: a retrospective multicenter cohort study.
Observational study in Neuroradiology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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15 authors.
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Abstract
purposeThe optimal antiplatelet therapy for patients on continuous oral anticoagulants (OACs) who are undergoing coil embolization for unruptured intracranial aneurysms (UIAs) is remains unknown. This study evaluated the efficacy and safety of single- (SAPT) and dual antiplatelet therapy (DAPT) in patients taking OACs who underwent coil embolization for UIAs.
methodsThis retrospective multicenter study included patients taking OACs who underwent coil embolization for UIAs at 9 hospitals between January 2016 and August 2023. The primary outcome was a thromboembolic complication within 30 days post-procedure. The secondary outcome was a composite all bleeding events according to the Thrombolysis in Myocardial Infarction bleeding criteria.
resultsA total of 112 patients (mean [standard deviation] age, 67.3 [9.7]; 67 females [59.8%]) were included. Among them, 31 patients (27.7%) received SAPT, and 81 patients (72.3%) received DAPT. There was no significant difference in the thromboembolic event rate between the 2 groups (SAPT group: 2 of 31 [6.5%]; DAPT group: 3 of 81 [3.7%]; unadjusted hazard ratio [HR], 0.55 [95% CI, 0.09-3.30]; P = .52). However, the rate of all bleeding events after coil embolization in the DAPT group was significantly higher than that in the SAPT group (SAPT group: 2 of 31 [6.5%]; DAPT group: 22 of 81 [27.2%]; adjusted HR, 5.57 [95% CI, 1.30-23.83]; P = .02).
conclusionsWith respect to SAPT, DAPT was not associated with a reduction in thromboembolic complications in patients taking OACs who underwent coil embolization, but it was associated with an increase in all bleeding events.
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