The correlation between epicardial fat thickness and longitudinal left atrial reservoir strain in patients with type 2 diabetes mellitus and controls

The Ultrasound Journal - Tập 15 - Trang 1-8 - 2023
Maryam Nabati1, Farideh Moradgholi2, Mahmood Moosazadeh3, Homa Parsaee4
1Professor of Cardiology, Fellowship of Echocardiography, Department of Cardiology, Faculty of Medicine, Cardiovascular Research Center, Fatemeh Zahra Teaching Hospital, Mazandaran University of Medical Sciences, Sari, Iran
2Student Research Committee, Faculty of Medicine, Cardiovascular Research Center, Mazandaran University of Medical Sciences, Sari, Iran
3Professor of Cardiology Fellowship of Echocardiography Department of Cardiology Faculty of Medicine, Cardiovascular Research Center Mazandaran University of Medical Sciences, Sari, Iran
4Student Research Committee, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran

Tóm tắt

Diabetes mellitus (DM) has been documented among the strongest risk factors for developing heart failure with preserved ejection fraction (HFpEF). The earliest imaging changes in patients with DM are the left atrial (LA) functional and volumetric changes. The aim of this study was to determine the correlation between epicardial fat thickness (EFT) and longitudinal LA reservoir strain (LARS) in patients with type 2 DM (T2DM), as compared with non-diabetic controls. The study samples in this case-control study comprised of consecutive patients with T2DM (n=64) and matched non-diabetic controls (n=30). An echocardiography was performed on all patients and EFT, volumetric and longitudinal LARS, left ventricular (LV) global longitudinal strain (LVGLS), pulsed-wave Doppler-derived transmitral early (E wave) and late (A wave) diastolic velocities, and tissue-Doppler-derived mitral annular early diastolic (e′) and peak systolic (s') velocities were obtained. The study results demonstrated that the patients with T2DM had thicker EFT (5.96±2.13 vs. 4.10±3.11 mm) and increased LA volume index (LAVI) (43.05± 44.40 vs. 29.10±11.34 ml/m2) in comparison with the non-diabetic ones (p-value: 0.005 and 0.022, respectively). On the other hand, a direct association was observed between EFT and the E/e′ ratio, and an inverse correlation was established between EFT and LARS in patients with T2DM (r=0.299, p-value=0.020 and r=− 0.256, p-value=0.043, respectively). However, regression analysis showed only LV mass index (LVMI) (β=0.012, 95% CI 0.006–0.019, p-value<0.001), LAVI (β=− 0.034, 95% CI − 0.05–0.017, p-value<0.001), and EFT (β=− 0.143, 95% CI − 0.264–− 0.021, p-value=0.021) were independently correlated with LARS. LARS is considered as an important early marker of subclinical cardiac dysfunction. Thickened epicardial fat may be an independent risk factor for decreased LA reservoir strain. Diabetics are especially considered as a high risk group due to having an increased epicardial adipose tissue thickness.

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The Ultrasound Journal

Tập 15

1-8

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