Ischemic cerebrovascular events in patients with Chagas cardiomyopathy: A prospective follow-up study

被引:45
作者
Nunes, Maria Carmo P. [1 ,2 ]
Barbosa, Marcia M. [2 ]
Ribeiro, Antonio Luiz P.
Barbosa, Felipe Batista L.
Rocha, Manoel O. C.
机构
[1] Univ Fed Minas Gerais, Dept Clin Med, Sch Med, BR-30130100 Belo Horizonte, MG, Brazil
[2] Hosp Socor, Ecoctr, Belo Horizonte, MG, Brazil
关键词
Ischemic cerebrovascular events; Chagas cardiomyopathy; Chagas disease; Stroke; Thromboembolism; VENTRICULAR DYSFUNCTION; STROKE; HEART; RISK; ECHOCARDIOGRAPHY; DISEASE; GUIDELINES; EMBOLISM; COHORT;
D O I
10.1016/j.jns.2008.12.015
中图分类号
R74 [神经病学与精神病学];
学科分类号
摘要
Background: Chagas disease cardiomyopathy is a common form of dilated cardiomyopathy worldwide, and an important cause of stroke in Latin America. The long-term cumulative Fisk of ischemic cerebrovascular event (ICE) and its relation to left ventricular (LV) dysfunction have not been determined. The aims of this study were to describe the incidence and to evaluate the effect of LV ejection fraction on the risk for ICE in patients with Chagas cardiomyopathy. Methods: A total of 213 consecutive patients with Chagas disease and LV systolic dysfunction, 131 males, mean age 48 +/- 12 years, were prospectively enrolled. The use of anticoagulation was based on clinical indications. The end point was ICE, which included fatal or nonfatal stroke and transient ischemic attack. Risk factors for events were assessed by Cox proportional-hazards analysis. Results: Mean follow-up was 36 months; 69 patients died and seven underwent cardiac transplantation. The overall incidence of ICE was 2.67 events per 100 patient/years. Independent risk factors for ICE included LV ejection fraction (HR 0.95, 95% CI 0.91 to 0.99, p=0.009) and left atrial volume corrected for body surface area (HR 1.04, 95% CI 1.01 to 1.07, p=0.007), which persisted after adjustment for anticoagulation use. Patients with ejection fractions <= 35% had a relative risk of events of 3.41, as compared with the other patients. The presence of apical aneurysm or thrombus, age, and history of previous stroke were not an independent long-term risk for ICE. Conclusions: In patients with Chagas cardiomyopathy, the annual incidence of ICE is low. Left ventricular ejection fraction and indexed left atrial volume appear to be independently associated with these events. (c) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码:96 / 101
页数:6
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