The Prognostic Value of Left Atrial Reservoir Functional Indices Measured by Three-Dimensional Speckle-Tracking Echocardiography for Major Cardiovascular Events

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  • Tsujiuchi Miki
    Division of Cardiology, Department of Internal Medicine, Showa University Fujigaoka Hospital
  • Ebato Mio
    Division of Cardiology, Department of Internal Medicine, Showa University Fujigaoka Hospital
  • Maezawa Hideyuki
    Division of Cardiology, Department of Internal Medicine, Showa University Fujigaoka Hospital
  • Ikeda Naoko
    Cardiovascular Center, Showa University Koto Toyosu Hospital
  • Mizukami Takuya
    Division of Cardiology, Department of Internal Medicine, Showa University Fujigaoka Hospital
  • Nagumo Sakura
    Division of Cardiology, Department of Internal Medicine, Showa University Fujigaoka Hospital
  • Iso Yoshitaka
    Showa University Research Institute for Sports and Exercise
  • Yamauchi Takenori
    Department of Hygiene, Public Health, and Preventive Medicine, Showa University School of Medicine
  • Suzuki Hiroshi
    Division of Cardiology, Department of Internal Medicine, Showa University Fujigaoka Hospital

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<p>Background:Left atrial (LA) volume and left ventricular longitudinal strain (LVLS) have significant prognostic values for major cardiovascular events (MACEs). Prognostic values of LA reservoir functional indices measured by 3-dimensional (3D) speckle-tracking echocardiography (STE) were evaluated.</p><p>Methods and Results:A total of 264 patients, who underwent 2-dimensional (2D) echocardiography and 3DSTE for various underlying heart diseases, were followed up to record MACE. After a mean follow up of 547±435 days, 30 patients developed MACE: 7 cardiac deaths, 6 strokes, 1 non-fatal myocardial infarction, and 22 admissions for heart failure (5 of these had cardiac death after discharge, whereas 1 sustained stroke after discharge). Receiver operating characteristic curve analysis was performed to determine the optimal cut-off levels of 4 LA functional indices: LA emptying fraction (LAEmpF), LA longitudinal strain (LALS), LA circumferential strain (LACS), and LA area change ratio (LAAC), using 3DSTE. Among these factors, 2DLVLS, 3DLAEmpF, and 3DLALS demonstrated a higher hazard ratio (>5.0) than other variables. The 3DLAEmpF and 3DLALS had a higher average treatment effect (ATE) and ATE on the treated (ATT), respectively, than the other indices after propensity score matching. Addition of 3DLAEmpF to the base model using clinical variables and LV ejection fraction or 2DLVLS demonstrated higher prognostic power.</p><p>Conclusions:LAEmpF calculated using 3DSTE possessed additive prognostic values for the prediction of MACE.</p>

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  • Circulation Journal

    Circulation Journal 85 (5), 631-639, 2021-04-23

    一般社団法人 日本循環器学会

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