ヤザキ　キヨウイチロウ   Yazaki Kiyouichirou   矢崎　恭一郎    所属   医学部 医学科（東京女子医科大学病院）    職種   助教
論文種別	原著
言語種別	英語
査読の有無	査読あり
表題	Usefulness of Preprocedural Left Ventricular End-Systolic Volume Index and Early Diastolic Mitral Annular Velocity in Predicting Improvement in Left Ventricular Ejection Fraction Following Atrial Fibrillation Ablation in Patients With Impaired Left Ventricular Systolic Function.
掲載誌名	正式名：The American journal of cardiology 略　 称：Am J Cardiol ISSNコード：00029149/18791913
掲載区分	国外
出版社	Elsevier Inc.
巻・号・頁	125(5),pp.759-766
著者・共著者	YAZAKI Kyoichiro†, EJIMA Koichiro*, KANAI Miwa, KATAOKA Shohei, HIGUCHI Satoshi, YAGISHITA Daigo, SHODA Morio, HAGIWARA Nobuhisa
担当区分	筆頭著者
発行年月	2020/03
概要	Catheter ablation of atrial fibrillation (AF) is known to facilitate reverse remodeling of the left ventricle. However, factors that can improve the left ventricular (LV) systolic function remain elusive. In this study, we investigated factors related to LV ejection fraction (LVEF) improvement following AF ablation in patients with systolic dysfunction. A total of 140 patients with impaired LVEF (<50%) who underwent AF ablation were retrospectively evaluated. The primary outcome was LVEF improvement. A total of 68, 9, and 15 patients achieved LVEF improvement at 3, 6, and 12 months after AF ablation, respectively. Five patients achieved late LVEF improvement. The overall LVEF improvement rate was 69%. In the receiver operating characteristic curve analysis, the LV end-systolic volume (LVESVI) and early diastolic mitral annular velocity (e') had larger areas under the curve (0.79 and 0.75, respectively) than other echocardiographic parameters, and the most optimal cutoff values of LVESVI and e' were 49.8 ml/m2 and 5.4 cm/s, respectively. Moreover, preprocedural LVESVI ≤49.8 ml/m2 and e' ≥5.4 independently predicted the outcome after adjusting for confounders (hazard ratio 1.74; 95% confidence interval 1.06 to 2.95; p = 0.03; hazard ratio, 1.99; 95% confidence interval 1.13 to 3.64; p = 0.01). LVEF improvement was achieved in 69% of patients who underwent AF ablation, including 4% with late improvement. Lower LVESVI and higher e' could independently predict LVEF improvement.
DOI	10.1016/j.amjcard.2019.11.031
PMID	31889522