학술논문
Prior stroke and transient ischemic attack as risk factors for subsequent stroke in atrial fibrillation patients: A report from the GARFIELD-AF registry.
Document Type
Article
Author
Hacke, Werner; Bassand, Jean-Pierre; Virdone, Saverio; Camm, A John; Fitzmaurice, David A; Fox, Keith AA; Goldhaber, Samuel Z; Goto, Shinya; Haas, Sylvia; Kayani, Gloria; Mantovani, Lorenzo G; Misselwitz, Frank; Pieper, Karen S; Turpie, Alexander GG; van Eickels, Martin; Verheugt, Freek WA; Kakkar, Ajay K
Source
Subject
*TRANSIENT ischemic attack
*ATRIAL fibrillation
*CLINICAL trial registries
*STROKE
*CARDIOVASCULAR diseases
*
*
*
*
Language
ISSN
1747-4930
Abstract
Background: It is not always possible to verify whether a patient complaining of symptoms consistent with transient ischemic attack has had an actual cerebrovascular event. Research question: To characterize the risk of cardiovascular events associated with a history of stroke/transient ischemic attack in patients with atrial fibrillation. Study design and methods: This study investigated the clinical characteristics and outcomes of patients with a history of stroke/transient ischemic attack among 52,014 patients enrolled prospectively in GARFIELD-AF registry. The diagnosis of stroke or transient ischemic attack was not protocol defined but based on physicians' assessment. Patients' one-year risk of death, stroke/systemic embolism, and major bleeding was assessed by multivariable Cox regression. Results: At enrollment, 5617 (10.9%) patients were reported to have a history of stroke or transient ischemic attack. Patients with stroke or transient ischemic attack were older and had a greater burden of diabetes, moderate-to-severe kidney disease, and atherothrombosis and higher median CHA2DS2-VASc and HAS-BLED scores than those without history of stroke or transient ischemic attack. After adjustment, prior stroke/transient ischemic attack was associated with significantly higher risk for all-cause mortality (hazard ratio (HR), 1.26; 95% confidence interval (CI), 1.12–1.42), cardiovascular death (HR, 1.22; 95% CI, 1.01–1.48), non-cardiovascular death (HR, 1.39; 95% CI, 1.15–1.68), and stroke/systemic embolism (HR, 2.17; 95% CI, 1.80–2.63) than patients without history of stroke/transient ischemic attack. In patients with a prior stroke alone higher risk was observed for all-cause mortality (HR, 1.29; 95% CI, 1.11–1.50), non-cardiovascular death (HR, 1.39; 95% CI, 1.10–1.77), and stroke/systemic embolism (HR, 2.29; 95% CI, 1.83–2.86). No significantly elevated risk of adverse events was seen for patients with history of transient ischemic attack alone. Interpretation: A history of prior stroke or transient ischemic attack is a strong independent risk factor for mortality and stroke/systemic embolism. This excess risk is mainly attributed to a history of stroke (with or without transient ischemic attack), whereas history of transient ischemic attack is a weaker predictor. Clinical trial registration: NCT01090362. [ABSTRACT FROM AUTHOR]