1.
Optimal Thromboprophylaxis in Elderly Chinese Patients with Atrial Fibrillation (ChiOTEAF) registry: protocol for a prospective, observational nationwide cohort study.
Guo, Y, Wang, Y, Li, X, Shan, Z, Shi, X, Xi, G, Lip, GYH, ,
BMJ open. 2018;(5):e020191
Abstract
INTRODUCTION Atrial fibrillation (AF) is a worldwide healthcare burden that is associated with the ageing population. Elderly patients with AF with multiple comorbidities usually present with a high risk of thromboembolism and bleeding. Limited prospective data are available from Asian cohorts on the epidemiology and complications of AF. The present prospective cohort study aims to explore contemporary antithrombotic strategies among the elderly Chinese population in the new era of non-vitamin K antagonist oral anticoagulants and to compare the clinical characteristics and outcomes between Chinese and European AF populations. METHODS AND ANALYSIS The Optimal Thromboprophylaxis in Elderly Chinese Patients with Atrial Fibrillation (ChiOTEAF) registry will recruit 5000 patients with AF over 65 years of age in China. AF-related risks, including stroke/systemic thromboembolism and bleeding outcomes, will be assessed. Medical history, risk factors, demographic information and management will be collected at baseline, and clinical events during 1 year follow-up will be recorded. Follow-up will be conducted for at least 1 year and then annually thereafter. As our registry has a common protocol to the European Society of Cardiology EURObservational Research Programme AF general registry programme, preplanned analyses comparing the clinical profiles and outcomes will be performed. The ChiOTEAF registry offers an opportunity to provide a better understanding of the clinical profiles and adverse outcomes of patients with AF in China and allow for comparisons with a contemporary European population. ETHICS AND DISSEMINATION Ethics approval was granted by the Central Medical Ethic Committee of Chinese PLA General Hospital (approval no S2014-065-01). The (inter)national research presentations, peer-reviewed publications and media coverage of the research will be sued for dissemination of the results.
2.
Bleeding risk assessment and management in atrial fibrillation patients. Key messages for clinical practice from the European Heart Rhythm Association position statement.
Guo, Y, Lip, GY, Apostolakis, S
Polskie Archiwum Medycyny Wewnetrznej. 2012;(5):235-42
Abstract
The prevention of thromboembolism is the main therapeutic goal in patients with atrial fibrillation (AF). Vitamin K antagonists have been proved highly effective in preventing thromboembolic events in patients with AF and despite recent advances in oral anticoagulation they remain the most widely used agents. Anticoagulation increases the incidence of bleeding; however, in the field of stroke prevention in AF the clinical benefit of vitamin K antagonists clearly outweighs potential risks. The annual incidence of major bleeding among individuals with AF on oral anticoagulation varies widely, ranging from 1.3% to 7.2%. Several factors affect bleeding risk including the intensity of anticoagulation, the efficacy of monitoring modalities, and patient characteristics. This multifactorial etiology makes prediction of bleeding risk complex, necessitating the derivation and validation of clinical prediction tools for the estimation of total bleeding risk in clinical practice. The present review summarizes data on definition, risk prediction, prevention, and management of oral anticoagulation‑associated bleeding as reflected by the recent European Heart Rhythm Association consensus statement.