• Sergio Agosti, Laura Casalino, Enrico Rocci, Gabriele Zaccone, and Eugenia Rota.
• Cardiology Department, San Giacomo Hospital, Novi Ligure, Alessandria, Italy. agostisergio@virgilio.it.
• J Med Case Rep. 2017 Aug 15; 11 (1): 224.

BackgroundNon-vitamin K antagonist oral anticoagulants, including dabigatran, are currently widely used for the prevention of stroke and systemic embolism in patients with non-valvular atrial fibrillation. Recently, idarucizumab, a monoclonal antibody fragment for immediate reversal of dabigatran-induced anticoagulation, has been introduced into the market to be used in life-threatening bleeding or urgent surgery, allowing for rapid normalization of clotting parameters. The use of idarucizumab is not yet well established in patients presenting with acute ischemic stroke on dabigatran who are candidates for thrombolytic therapy.Case PresentationWe report the case of a 71-year-old hypertensive Caucasian woman with non-valvular atrial fibrillation treated with dabigatran 150 mg twice daily, who presented with acute ischemic stroke causing right-sided hemiparesis and aphasia. Two hours after presentation to the emergency department, a decision was made to administer idarucizumab for achieving complete reversal of any potential anticoagulant effect of dabigatran and, in the absence of any contraindications, our patient underwent successful thrombolysis. At discharge, our patient was able to walk unassisted and had only residual aphasia. Twenty days later, she had completely recovered motor function of her right side, with further progressive improvement of aphasia. Repeat cranial computed tomography confirmed the absence of hemorrhage, and anticoagulant therapy with dabigatran 150 mg twice daily was resumed.ConclusionsOur case report adds to the evidence that idarucizumab administration is safe in the setting of patients with atrial fibrillation treated with dabigatran who develop acute ischemic stroke requiring thrombolysis.

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