Assessement of left ventricular systolic strain in patients with mitral valve replacement by speckle tracking echocardiography
10.3760/cma.j.issn.1004-4477.2009.06.003
- VernacularTitle:超声斑点追踪技术对二尖瓣置换术后左心室收缩期应变的初步评估
- Author:
Guixia ZHENG
;
Guoqing DU
;
Jiawei TIAN
;
Chunping NING
;
Xiuting FU
- Publication Type:Journal Article
- Keywords:
Echocardiography;
Mitral valve stenosis;
Heart valve prosthesis implantation;
Ventricular function,left;
Speckle tracking imaging
- From:
Chinese Journal of Ultrasonography
2009;18(6):467-470
- CountryChina
- Language:Chinese
-
Abstract:
Objective To assess left ventricular systolic strain in patients with mitral valve replacement (MVR) by speckle tracking echocardiography. Methods Two-dimensional images were acquired from the apical four-chamber view, two-chamber view and long-axis of the left ventricular view in 30 MVR patients (MVR group) and 30 healthy subjects matched by age and gender(control group), and then were analysed off line to evaluate left ventricular systolic strain. The maximum systolic longitudinal strain(LS) of myocardial segments and global longitudinal strain(GLS) were measured in apical views. Left ventricular ejection fraction(LVEF) was calculated using Simpson's method. The correlation between GLS and LVEF was analyzed using Pearson's method. Results Compared with the control group, LS of corresponding segment and GLS in MVR group decreased significantly (P < 0.01), but there were no statistical differences within MVR group(P>0.05). There was a good linear positive correlation between GLS and LVEF in patients (r = 0.710, P <0.01). Conclusions Speckle tracking eehoeardiography is available for measuring left ventricular systolic strain and estimating global systolic function in patients with MVR. Bull's-eye strain map, created by speckle tracking imaging, can achieve an accurate real-time segmental wall motion analysis.
