Tanislav C, et al. - In the current case-control study, researchers analyzed the incidence of atrial fibrillation (AF) within 5 years after an acute cerebrovascular event in AF-naive individuals and its relevance for secondary prevention. The sample consisted of individuals who had received an initial ischemic stroke diagnosis documented in the Disease Analyzer database (IQVIA), which compiles data like risk factors, drug prescriptions, and diagnoses obtained from 1,262 general practices in Germany. The stroke and non-stroke groups each involved 22,774 individuals after the selection procedure. AF was detected in 2,369 people in the stroke group, on the other hand, AF was only evident in 1,101 patients in the non-stroke group. A recent stroke is a powerful preconditioning factor to detect AF after an acute event within 5 years. Most of these patients, regardless of age, are treated with oral anticoagulants.