Cilostazol uncovers covert atrial fibrillation in non-cardioembolic stroke
2020
Abstract Background We hypothesized that administration of cilostazol may clarify the occult atrial fibrillation (AF) during hospitalization in mild stroke patients, who has no history of AF. Methods From our prospective non-cardioembolic stroke study, randomized to dual antiplatelet therapy using cilostazol and aspirin or aspirin alone trial (ADS), data on the presence or absence of AF were retrospectively analyzed. In the ADS, during hospitalization, as a routine examination, presence of AF was investigated using electrocardiogram (ECG), ECG monitoring and Holter ECG. Multivariate regression analysis was conducted to evaluate the independent parameters related to the AF. Clinical outcome at 3 months was evaluated using modified Rankin Scale (mRS) score. Results Data on 1194 patients (793 [66%] men; median age [interquartile range] of 69 [61–77] years, National Institutes of Health Stroke Scale score 2 [1–4], onset-to-admission 10.8 [4.7–20.5] hours) were retrospectively analyzed. AF was newly detected in 41 (3%) patients (3 by ECG, 21 by the ECG monitoring and 17 by the Holter ECG) during hospitalization. Patients treated with combined cilostazol and aspirin therapy frequently had the AF than those took aspirin alone (5% vs. 2%, p = .007). Multivariate regression analysis showed that cilostazol administration was one of the independent factors for new-AF (odds ratio 2.672, 95%CI: 1.205–5.927, p = .016). The frequency of mRS 0-1 was 68% in the new-AF group and 67% in the non-AF group (p = 1.000). Conclusion Cilostazol therapy may increase the detectability of AF in acute non-cardioembolic stroke, though the new-AF was not related to clinical outcome at 3 months.
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