期刊
JOURNAL OF THE AMERICAN SOCIETY OF ECHOCARDIOGRAPHY
卷 27, 期 5, 页码 463-478出版社
MOSBY-ELSEVIER
DOI: 10.1016/j.echo.2014.01.021
关键词
Echocardiography; Left atrial mechanics; Strain; Strain rate; Two-dimensional speckle-tracking; Tissue Doppler echocardiography
The importance of the left atrium in cardiovascular performance has long been acknowledged. Quantitative assessment of left atrial (LA) function is laborious, requiring invasive pressure-volume loops and thus precluding its routine clinical use. In recent years, novel postprocessing imaging methodologies have emerged, providing a complementary approach for the assessment of the left atrium. Atrial strain and strain rate obtained using either Doppler tissue imaging or two-dimensional speckle-tracking echocardiography have proved to be feasible and reproducible techniques to evaluate LA mechanics. It is essential to fully understand the clinical applications, advantages, and limitations of LA strain and strain rate analysis. Furthermore, the technique's prognostic value and utility in therapeutic decisions also need further elucidation. The aim of this review is to provide a critical appraisal of LA mechanics. The authors describe the fundamental concepts and methodology of LA strain and strain rate analysis, the reference values reported with different imaging techniques, and the clinical implications. (J Am Soc Echocardiogr 2014; 27: 463-78.)
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