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“Compared to vitamin K antagonists, mortality risk associated with the non vitamin K anticoagulants and aspirin use was significantly increased in patients with higher stroke risk (CHA2DS2-VASc > 2).”
“ Non vitamin K antocoagulant use (adjusted HR [aHR] = 1.42; 95% Confidence Interval [CI] 1.18–1.71) and aspirin use (aHR = 1.64; 95% CI 1.57–1.77) were both significantly associated with a higher mortality risk than use of vitamin K antagonists.”
International Journal of Clinical Pharmacy • 2019 | View Paper
“Two randomized, double blind trials have recently shown a reduction of recurrence by about 30% with aspirin compared to placebo in patients who had completed treatment with vitamin K antagonists for a first episode of unprovoked venous thromboembolism.”
“In patients on triple antithrombotic therapy with vitamin K antagonists, aspirin, and clopidogrel, a single clinical trial indicates that withdrawal of aspirin may reduce bleeding risk without increasing the risk of coronary thrombosis.”
“The combination of aspirin and vitamin K antagonists may be associated with the heightened risk of cerebral haemorrhage, compared to treatment with either drug alone.”