Introduction: Optimal antithrombotic treatment after an acute coronary syndrome (ACS) in patients with atrial fibrillation is unclear. Data on outcomes in patients on concomitant ticagrelor and the novel oral anticoagulants (NOAC) is scarce. This study therefore sought to describe patient characteristics and treatment outcomes in patients with atrial fibrillation and ACS treated with concomitant ticagrelor and NOACs (double antithrombotic therapy, DT). Materials and methods: We retrospectively identified all ACS patients with atrial fibrillation on DT upon discharge from Skåne University Hospital in Lund, Sweden, between 2016 and 2019. Identified patients were compared with age and sex matched controls with ACS alone treated with ticagrelor and aspirin (DAPT). Major bleeding was defined in accordance with the HAS-BLED derivation study. Patients were retrospectively followed for six months. Results: In total, 341 patients on DT were identified and compared with 341 controls on DAPT. Mean HAS-BLED bleeding risk score was higher in patients on DT (2.9 ± 1.0 vs 2.6+/0.9 units, p < 0.001; DT vs DAPT). The incidence of major bleeding was higher in patients on DT (31 (9.1%) vs 10 (2.9%), p = 0.001; DT vs DAPT), while a composite of all thrombotic events was found to be similar between the groups (8 (2.3%) vs 5 (1.5%), p = NS; DT vs DAPT). Conclusions: While thrombotic events occur at a similar rate, the bleeding rate is higher in patients with atrial fibrillation and ACS treated with DT than in patients with ACS alone treated with DAPT. Patients with atrial fibrillation also have a higher basal bleeding risk.
|Status||Published - 2021 maj|
Bibliografisk informationFunding Information:
The project described was financially supported by the Department of Clinical Sciences, Faculty of Medicine, Lund University , Lund, Sweden. The department had no role in study design, in the collection; analysis and interpretation of data, in the writing of the report; and in the decision to submit the article for publication. The authors wish to thank Ewa Mattsson, RN for identifying eligible patients in the RIKS-HIA registry and Jasmin Zejnelagic, BSc for assisting with data gathering.
© 2021 The Authors