KMID : 0390620100180010001
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Journal of Cardiovascular Ultrasound 2010 Volume.18 No. 1 p.1 ~ p.5
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Usefulness of Mitral Annular Systolic Velocity in the Detection of Left Ventricular Systolic Dysfunction: Comparison with Three Dimensional Echocardiographic Data
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Park Yun-Seon
Park Jae-Hyeong Ahn Kye-Taek Jang Won-Il Park Hyung-Seo Kim Jun-Hyung Lee Jae-Hwan Choi Si-Wan Jung Jin-Ok Seong In-Whan
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Abstract
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Background: Although the modified Simpson¡¯s method is widely used for the assessment of left ventricular ejection fraction (LVEF), it has limitations including relatively high inter- and intra-observer variability and time consuming nature. We want to evaluate whether assessing mitral annular systolic velocity (S¡¯ velocity) by tissue Doppler imaging (TDI) can be used to evaluate LV systolic function with comparing LVEF by three dimensional echocardiography (3DE).
Methods: We examined 3DE and TDI studies of patients between January and August 2008. 3DE LVEF was measured by offline commercial computer software EchoPac PC¢ç (GE, Andover, MA, USA). S¡¯ velocity was obtained from the medial side with apical four chamber view by pulsed-wave Doppler with TDI.
Results: We included 125 patients (78 males (62.4%), mean age: 57.5¡¾13.0 years). The mean S¡¯ velocity was 7.7¡¾1.9cm/s and the mean LVEF was 57.2¡¾10.4%. The S¡¯ velocity measured by TDI showed a linear correlation with LVEF measured by 3DE (r=0.688, p£¼0.001). Study patients were divided into two groups according to the presence of LV systolic dysfunction: Group I (normal LVEF), n=102 and Group II (LVEF £¼50%), n=23. For prediction of significant LV systolic dysfunction by the receiver operating characteristic curve according to S¡¯ velocity, the optimal cutoff value was 6.8 cm/s. At this cutoff value, the sensitivity and specificity were 94.1% and 87%, respectively.
Conclusion: In this study, S¡¯ velocity measured by TDI showed a significant correlation with three dimensional LVEF and can be used to detect patients with LV systolic dysfunction.
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KEYWORD
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Left ventricular function, Mitral annulus systolic velocity, Tissue Doppler imaging, Three-dimensional echocardiography
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