• Anetta Undas, Leszek Drabik, and Tatjana Potpara.
• Institute of Cardiology, Jagiellonian University Medical College, Kraków, Poland; John Paul II Hospital, Kraków, Poland. mmundas@cyf-kr.edu.pl
• Pol. Arch. Med. Wewn. 2020 Jan 31; 130 (1): 47-58.

AbstractMajor bleeding (especially intracranial hemorrhage) is the most feared adverse event observed in patients with atrial fibrillation (AF) receiving oral anticoagulation. Clinical risk factor-based scores have modest ability to predict major or clinically relevant bleeds, and blood biomarkers are increasingly implemented to improve bleeding prognostication in patients with AF on life‑long anticoagulation. To improve the safety of anticoagulation in the era of non-vitamin K antagonist oral anticoagulants (NOACs, or direct oral anticoagulants [DOACs], including dabigatran, rivaroxaban, apixaban, and edoxaban), specific demographic, clinical, and laboratory variables should be considered. The current review summarizes practical challenges in the management of oral anticoagulation with emphasis on the risk assessment tools, elderly or underweight patients, cancer patients, impact of chronic kidney disease, liver cirrhosis, and thrombocytopenia in the context of bleeding risk in patients with AF.

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