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- W2351820006 abstract "【Objective】Using two-dimensional speckle tracking echocardiography, the changes in the left ventricular longitudinal strain(LS) and the longitudinal strain rate(LSR) were measured, in patients with aortic valve stenosis(AS)and preserved left ventricular ejection fraction(LVEF), before and after the aortic valve replacement(AVR). The clinical value of such measurements was discussed.【Methods】Forty- eight patients with AS underwent AVR were examined by conventional ultrasonography and two- dimensional speckle tracking(STE), their LS and LSR values were recorded 6 months pre and post AVR, respectively. The results were compared with those from 30 control cases.【Results】Compared with the control group, the left ventricular end systolic diameter(LVESD), end diastolic diameter(LVEDD), and EF values in AS patients had no significant difference before AVR(P0.05). However, the LS and LSR values in AS patients were decreased significantly(P0.01). Six months after AVR, the LS and LSR values in the AS group were significantly increased(P0.01), although the values were still significantly lower than those in the control group(P0.05).【Conclusions】In AS patients undergone AVR, STE can evaluate left ventricular systolic functions more accurately than conventional ultrasonography. In the follow up study of recovery in left ventricular systolic functions, STE also has important clinical values." @default.
- W2351820006 created "2016-06-24" @default.
- W2351820006 creator A5058915835 @default.
- W2351820006 date "2015-01-01" @default.
- W2351820006 modified "2023-09-25" @default.
- W2351820006 title "Application of two dimensional speckle tracking echocardiography in the study of left ventricular systolic functions during aortic valve replacement for aortic stenosis" @default.
- W2351820006 hasPublicationYear "2015" @default.
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