Female sex as an independent risk factor for stroke in atrial fibrillation: Possible mechanisms

Christina L. Cove; Christine M. Albert; Felicita Andreotti; Lina Badimon; Isabelle C. Van Gelder; Elaine M. Hylek

doi:10.1160/TH13-04-0347

Thrombosis and Haemostasis, Inhaltsverzeichnis

Thromb Haemost 2014; 111(03): 385-391
DOI: 10.1160/TH13-04-0347

Review Article

Schattauer GmbH

Female sex as an independent risk factor for stroke in atrial fibrillation: Possible mechanisms

Autoren

Christina L. Cove

¹Department of Cardiovascular Medicine, Boston University Medical Center, Boston, Massachusetts, USA
Christine M. Albert

²Cardiovascular Division and Division of Preventive Medicine, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
Felicita Andreotti

³Department of Cardiovascular Sciences, Catholic University, Rome, Italy
Lina Badimon

⁴Cardiovascular Research Center, CSIC-ICCC, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
Isabelle C. Van Gelder

⁵University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
Elaine M. Hylek

⁶Department of Internal Medicine, Boston University Medical Center, Boston, Massachusetts, USA

Abstract

Summary

Atrial fibrillation (AF) is an independent risk factor for thromboembolism and stroke. Women with AF are at a higher overall risk for thromboembolic stroke when compared to men with AF. Recent evidence suggests that female sex, after adjusting for stroke risk profile and sex differences in utilisation of anticoagulation, is an independent stroke risk factor in AF. The inclusion of female sex has improved the accuracy of the CHADS2 stroke risk stratification schema (Congestive heart failure, Hypertension, Age 75 years or greater, Diabetes mellitus, and prior Stroke or TIA). The newly revised and validated schema, CHA₂DS₂-VASc, dichotomises age and incorporates female sex and vascular disease history. The pathophysiological mechanisms to explain this increased risk in women are not well understood. According to Virchow’s triad, thrombosis that leads to stroke in AF should arise from three co-existing phenomena: structural abnormalities, blood stasis, and a hypercoagulable state. Herein, we explore the sex differences in the biological processes that lead to thrombus formation as applied to Virchow’s Triad. The objective of this review is to describe the potential mechanisms behind the increased risk of stroke in AF associated with female sex.

Keywords

Atrial fibrillation - stroke - sex differences - anticoagulation

Volltext

Referenzen

References
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