Mitral annulus motion compared with wall motion scoring index in the assessment of left ventricular ejection fraction
| Autor: | Egil Henriksen, Göran Nilsson, Tommy Jonason, Ingemar Lönnberg, Ivar Ringqvist, Kenneth Pehrsson, Pär Hedberg |
|---|---|
| Rok vydání: | 2003 |
| Předmět: |
Male
medicine.medical_specialty Population Geometry Internal medicine medicine Humans Radiology Nuclear Medicine and imaging Sinus rhythm Mitral annulus Wall motion education Aged education.field_of_study Ejection fraction Receiver operating characteristic business.industry Stroke Volume Stroke volume Myocardial Contraction Confidence interval Cross-Sectional Studies Echocardiography Cardiology Mitral Valve Female Cardiology and Cardiovascular Medicine business |
| Zdroj: | Journal of the American Society of Echocardiography. 16:622-629 |
| ISSN: | 0894-7317 |
| DOI: | 10.1016/s0894-7317(03)00115-9 |
| Popis: | The biplane disc summation method is the recommended echocardiographic procedure to determine left ventricular (LV) ejection fraction (EF). Assessment of mitral annulus motion (MAM) or wall motion scoring index (WMI) has been reported to be less dependent on image quality compared with the recommended method, and proposed as a surrogate to the disc summation method in calculation of LVEF. We aimed to compare MAM and WMI in the echocardiographic assessment of LVEF. In a randomly selected population-based sample of 75-year-old men and women in sinus rhythm (n = 409) MAM, as measured by M-mode, was compared with WMI, calculated as the mean value of wall motion scoring in 9 LV segments. LVEF, as measured by the biplane disc summation method was used as reference. The limits of agreement (mean difference +/- 1.96 SD) between LVEF and corresponding MAM values were -18 to +13 LVEF%, and between LVEF and corresponding WMI values were -12 to +13 LVEF%. The areas under the receiver operating characteristic curves for MAM and WMI to predict a LVEF < 50% were 0.892 and 0.998, respectively (95% confidence interval of the difference 0.062-0.149). The corresponding areas for MAM and WMI to predict a LVEF < 40% were 0.955 and 0.998, respectively (95% confidence interval of the difference 0.017-0.069). In conclusion, the ability of WMI to estimate LVEF was more favorable than MAM in this population-based sample of 75-year-old participants. The findings suggest that the WMI is preferable to MAM in estimating LVEF. |
| Databáze: | OpenAIRE |
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