Objectives The management of atrial fibrillation and deep venous thrombosis has evolved with the development of direct oral anticoagulants (DOAC), and oral anticoagulant (OAC) might influence the development or clinical course in both ischemic and hemorrhagic stroke. However, detailed data on the differences between the effects of the prior prescription of warfarin and DOAC on the clinical characteristics, neuroradiologic findings, and outcome of stroke are limited. Design The prospective analysis of stroke patients taking anticoagulants (PASTA) registry study is an observational, multicenter, prospective registry of stroke (ischemic stroke, transient ischemic attack, and intracerebral hemorrhage) patients receiving OAC in Japan. This study is designed to collect data on clinical background characteristics, drug adherence, drug dosage, neurological severity at admission and discharge, infarct or hematoma size, acute therapy including recanalization therapy or reverse drug therapy, and timing of OAC re-initiation. Patient enrollment started in April 2016 and the target patient number is 1000 patients. Conclusions The PASTA prospective registry should identify the status of stroke patients taking OAC in the current clinical practice in Japan.
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