Atrial Fibrillation as a Cause of Stroke and Intracranial Hemorrhage Study (The FibStroke Study)

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Approximately 20% of stroke is caused by atrial fibrillation (AF) and 1% of patients with AF suffer from intracranial hemorrhage. Thus, the net benefit of AF management is the key factor in choosing the successful treatment (pharmacological and interventional). In this retrospective Finnish multicen...

Approximately 20% of stroke is caused by atrial fibrillation (AF) and 1% of patients with AF suffer from intracranial hemorrhage. Thus, the net benefit of AF management is the key factor in choosing the successful treatment (pharmacological and interventional). In this retrospective Finnish multicenter study the investigators collect data on patients with intracranial thromboembolic events or intracranial hemorrhage and AF during the study period. All such patients ≥18 years of age are identified and relevant clinical details are retrospectively gathered from the hospital records of the participating hospitals into an internet-based CRF. The total study period is from 2003 to 2012. All case records are reviewed using standardized data collection protocol to get information on baseline characteristics and medication of the patients, management of the patients before and during the index complication and during a 30-day follow-up after each complication. Diagnosis of atrial fibrillation is based 12-lead electrocardiography according to the standard criteria. Stroke is documented clinically and confirmed by computerized tomography or magnetic resonance imaging to be caused by cerebral infarction. Diagnosis of transient ischemic attacks are based on clinical diagnosis by neurologist when stroke is not confirmed by imaging. After completion of manual registration of data, a computer-based cross-checking of strokes is performed from discharge register data of the included patients to ensure the complete coverage of all events. Diagnosis of inctracranial bleedings are based on patient record and classified as subdural, subarachnoidal and intracerebral and possible preceding trauma is registered. Outcome measures are classified by study neurologist when necessary. Antigoagulation treatment, INR levels during the index complication, possible pauses in treatment and their casues are registered togethr with information on antiplatelet treatments.

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