Results of Register in Patients with Acute Coronary Syndrome and Atrial Fibrillation Receiving Rivaroxaban

Aim      To evaluate outcomes in patients with acute coronary syndrome and atrial fibrillation who receive rivaroxaban and the patients’ compliance with the antithrombotic therapy.

Material and methods  The study was performed from October 2017 through December 2019 and included 129 patients. Events between the discharge from the hospital and 12 months of follow-up were recorded. The primary endpoint was development of major, minor or requiring medical attention bleeding according to the TIMI scale. The secondary endpoint was a combination of recurrent myocardial infarction, nonfatal acute ischemic cerebrovascular disease, nonfatal systemic embolism, stent thrombosis, and cardiovascular mortality.

Results 32 (24.8%) patients early terminated the antiplatelet treatment and 22 (17.1%) patients terminated the rivaroxaban treatment. 26 (20.2 %) patients had hemorrhagic complications. The highest incidence of hemorrhage was observed within the first 2 months after the discharge. None of the bleedings was fatal. Composite endpoint events were observed in 24 (18.6 %) patients, including 14 (10.9 %) who died from cardiovascular causes.

Conclusion      The compliance with the antiplatelet therapy was insufficient. The incidence of hemorrhagic complications was relatively high; minor and requiring medical attention hemorrhages mostly contributed to the structure of these complications. The observed incidence of recurrent ischemic events associated with a high mortality presents a more serious problem compared to hemorrhagic complications of the combination antiplatelet therapy and warrants a more aggressive tactics of the antiplatelet treatment in high-risk patients.

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