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Direct oral anticoagulants in treatment of cerebral venous thrombosis: a systematic review protocol. 2019

Gauruv Bose, and Justin Graveline, and Vignan Yogendrakumar, and Dean Fergusson, and Dar Dowlatshahi
Department of Medicine, University of Ottawa and The Ottawa Hospital Research Institute, 1053 Carling Avenue, Ottawa, ON, K1Y 4E9, Canada. gbose@toh.ca.

Cerebral venous thrombosis causes disability from venous infarct and hemorrhage and potential mortality. Anticoagulation improves survival and disability outcomes, yet direct oral anticoagulants are currently not indicated in cerebral venous thrombosis due to lack of evidence, despite being on the market for nearly a decade. This systematic review will collate evidence of reported safety and efficacy of direct oral anticoagulant therapy in cerebral venous thrombosis. A search strategy was developed with a research librarian and registered on a protocol database (PROSPERO CRD42017078398). All published studies from MEDLINE and EMBASE up to February 2019 containing patients diagnosed with cerebral venous thrombosis who were treated with a direct oral anticoagulant (dabigatran, rivaroxaban, apixaban, or edoxaban) will be included. A risk of bias analysis will be performed to evaluate quality of studies overall. Current guidelines in the treatment of cerebral vein thrombosis dating back to 2011 from the American Heart Association/American Stroke Association endorse the utility of anticoagulation for the treatment of cerebral vein thrombosis; however, they did not support the use of direct oral anticoagulants. Updated guidelines from the European Stroke Organization, endorsed by the European Academy of Neurology in 2017, also refute utilization of direct oral anticoagulants due to a lack of evidence. There have been nearly 10 years of experience with direct oral anticoagulants in the treatment of venous thrombosis and prevention of stroke in patients with atrial fibrillation, with purported efficacy and safety in comparison with heparins and vitamin K antagonists. Our goal is to undertake a systematic review to assess the effectiveness and safety of direct oral anticoagulants in patients with cerebral vein thrombosis to help guide clinical decision-making for patients unable to take heparins or vitamin K antagonists and to direct future studies to contribute further to an area of certain evidence-based needs. PROSPERO CRD42017078398.

UI MeSH Term Description Entries
D006470 Hemorrhage Bleeding or escape of blood from a vessel. Bleeding,Hemorrhages
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000078202 Systematic Reviews as Topic Works about a review of primary literature in health and health policy that attempt to identify, appraise, and synthesize all the empirical evidence that meets specified eligibility criteria to answer a given research question. It's conducted using explicit methods aimed at minimizing bias in order to produce more reliable findings regarding the effects of interventions for prevention, treatment, and rehabilitation that can be used to inform decision making. Systematic Review as Topic,Umbrella Reviews as Topic,Reviews Systematic as Topic
D000284 Administration, Oral The giving of drugs, chemicals, or other substances by mouth. Drug Administration, Oral,Administration, Oral Drug,Oral Administration,Oral Drug Administration,Administrations, Oral,Administrations, Oral Drug,Drug Administrations, Oral,Oral Administrations,Oral Drug Administrations
D000925 Anticoagulants Agents that prevent BLOOD CLOTTING. Anticoagulant Agent,Anticoagulant Drug,Anticoagulant,Anticoagulant Agents,Anticoagulant Drugs,Anticoagulation Agents,Indirect Thrombin Inhibitors,Agent, Anticoagulant,Agents, Anticoagulant,Agents, Anticoagulation,Drug, Anticoagulant,Drugs, Anticoagulant,Inhibitors, Indirect Thrombin,Thrombin Inhibitors, Indirect
D001281 Atrial Fibrillation Abnormal cardiac rhythm that is characterized by rapid, uncoordinated firing of electrical impulses in the upper chambers of the heart (HEART ATRIA). In such case, blood cannot be effectively pumped into the lower chambers of the heart (HEART VENTRICLES). It is caused by abnormal impulse generation. Auricular Fibrillation,Familial Atrial Fibrillation,Paroxysmal Atrial Fibrillation,Persistent Atrial Fibrillation,Atrial Fibrillation, Familial,Atrial Fibrillation, Paroxysmal,Atrial Fibrillation, Persistent,Atrial Fibrillations,Atrial Fibrillations, Familial,Atrial Fibrillations, Paroxysmal,Atrial Fibrillations, Persistent,Auricular Fibrillations,Familial Atrial Fibrillations,Fibrillation, Atrial,Fibrillation, Auricular,Fibrillation, Familial Atrial,Fibrillation, Paroxysmal Atrial,Fibrillation, Persistent Atrial,Fibrillations, Atrial,Fibrillations, Auricular,Fibrillations, Familial Atrial,Fibrillations, Paroxysmal Atrial,Fibrillations, Persistent Atrial,Paroxysmal Atrial Fibrillations,Persistent Atrial Fibrillations
D020246 Venous Thrombosis The formation or presence of a blood clot (THROMBUS) within a vein. Deep Vein Thrombosis,Phlebothrombosis,Thrombosis, Deep Vein,Thrombosis, Venous,Deep Venous Thrombosis,Deep-Vein Thrombosis,Deep-Venous Thrombosis,Deep Vein Thromboses,Deep Venous Thromboses,Deep-Vein Thromboses,Deep-Venous Thromboses,Phlebothromboses,Thromboses, Deep Vein,Thromboses, Deep Venous,Thromboses, Deep-Vein,Thromboses, Deep-Venous,Thromboses, Venous,Thrombosis, Deep Venous,Thrombosis, Deep-Vein,Thrombosis, Deep-Venous,Vein Thromboses, Deep,Vein Thrombosis, Deep,Venous Thromboses,Venous Thromboses, Deep,Venous Thrombosis, Deep
D020521 Stroke A group of pathological conditions characterized by sudden, non-convulsive loss of neurological function due to BRAIN ISCHEMIA or INTRACRANIAL HEMORRHAGES. Stroke is classified by the type of tissue NECROSIS, such as the anatomic location, vasculature involved, etiology, age of the affected individual, and hemorrhagic vs. non-hemorrhagic nature. (From Adams et al., Principles of Neurology, 6th ed, pp777-810) Apoplexy,Cerebral Stroke,Cerebrovascular Accident,Cerebrovascular Apoplexy,Vascular Accident, Brain,CVA (Cerebrovascular Accident),Cerebrovascular Accident, Acute,Cerebrovascular Stroke,Stroke, Acute,Acute Cerebrovascular Accident,Acute Cerebrovascular Accidents,Acute Stroke,Acute Strokes,Apoplexy, Cerebrovascular,Brain Vascular Accident,Brain Vascular Accidents,CVAs (Cerebrovascular Accident),Cerebral Strokes,Cerebrovascular Accidents,Cerebrovascular Accidents, Acute,Cerebrovascular Strokes,Stroke, Cerebral,Stroke, Cerebrovascular,Strokes,Strokes, Acute,Strokes, Cerebral,Strokes, Cerebrovascular,Vascular Accidents, Brain

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