期刊
JOURNAL OF THE AMERICAN COLLEGE OF CARDIOLOGY
卷 60, 期 20, 页码 2074-2081出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jacc.2012.07.047
关键词
global longitudinal strain; heart failure; prognosis.
资金
- American Society of Echocardiography Outcomes Research Award
- GlaxoSmithKline Pharmaceuticals
- Medtronic, Inc.
- St. Jude Medical
- Abbott Laboratories
Objectives This study sought to examine the ability of left ventricular (LV) global longitudinal strain (GLS) to assess disease severity in patients with chronic systolic heart failure (HF). Background Left ventricular GLS is a sensitive measure of LV mechanics. Its relationship with standard clinical markers and long-term adverse events in chronic systolic HF is not well established. Methods In 194 chronic systolic HF patients, we performed comprehensive echocardiography with assessment of GLS by velocity vector imaging averaged from apical 4-chamber and 2-chamber views. Death, cardiac transplantation, and HF hospitalization were tracked for 5 years. Results In our study cohort (age 57 +/- 14 years, left ventricular ejection fraction [LVEF] 26 +/- 6%, median N-terminal proB-type natriuretic peptide [NT-proBNP] 1,158 pg/ml), the mean GLS was -7.1 +/- 3.3%. The GLS worsened with increasing New York Heart Association functional class (rank-sum p < 0.0001) and higher NT-proBNP (r = 0.42, p < 0.0001). The GLS correlated with LV cardiac structure (LV mass index: r = 0.35, p < 0.0001; LV end-diastolic volume index: r = 0.43, p < 0.0001) and LVEF (r = -0.66, p < 0.0001). A lower magnitude of GLS was associated with worsening LV diastolic function (E/e' septal: r = 0.33, p < 0.0001), right ventricular (RV) systolic function (RV s': r = -0.30, p < 0.0001), and RV diastolic function (RV e'/a': r = 0.16, p = 0.033). GLS predicted long-term adverse events (hazard ratio: 1.55, 95% confidence interval: 1.21 to 2.00; p < 0.001). Worsening strain (GLS >= -6.95%) predicted adverse events after adjustment for age, sex, ischemic etiology, E/e' septal, and NT-proBNP (hazard ratio: 2.04, 95% confidence interval: 1.09 to 3.94; p = 0.025) and age, sex, ischemic etiology, and LVEF (hazard ratio: 2.15, 95% confidence interval: 1.19 to 4.02; p = 0.011). Conclusions In chronic systolic HF, worsening LV GLS is associated with more severe LV diastolic dysfunction and RV systolic and diastolic dysfunction, and provides incremental prognostic value to LVEF. (J Am Coll Cardiol 2012;60:2074-81) (C) 2012 by the American College of Cardiology Foundation
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据