Assessment of left atrial function by speckle tracking imaging and real-time three-dimensional echocardiography in patients with essential hypertension
10.3760/cma.j.issn.1004-4477.2010.01.003
- VernacularTitle:二维斑点追踪显像和实时三维成像技术评价高血压病患者左心房功能
- Author:
Juan XIA
;
Ruiqiang GUO
;
Jinling CHEN
;
Qing ZHOU
- Publication Type:Journal Article
- Keywords:
Echocardiography;
Hypertension;
Atrial function,left;
Speckle tracking imaging
- From:
Chinese Journal of Ultrasonography
2010;19(1):8-11
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate left atrial(LA) function in essential hypertensive patients by speckle tracking imaging (STI) and real-time three-dimensional echocardiography (RT-3DE).Methods Thirty seven patients with essential hypertension were divided into normal geometric left ventricle(LV) group (LVN, n = 17) and remodeling geometrc LV group (LVR,n = 20).Twenty-six healthy participants were also include.The strain rate curve was auquired in each LA segment (anterior, posterior, lateral, inferior and septal) by STI. The LV mass, LA maximal, minimal and pre-systolic volume (LAVmax, LAVmin and LAVp), LA passive ejection fraction (LAPEF), LA active ejection fraction (LAAEF) were measured by RT-3DE. Results ①Compared with the control group, the mean peak systolic strain rate(mSR_S) in LVN group was lower(P <0.05), and the mSR_S, mean peak early diastolic strain rate(mSR_E) in LVR group were reduced (P <0.01, P<0.05), and the mean peak late diastolic strain rate (mSR_A) in LVR group was increased (P<0.01).②Compared with the control group,the LAVmax, LAVmin and LAV_P all increased in LVN and LVR group(P <0.05 or P <0, 01), the LAPEF was degraded (P<0.05),and the LAAEF was increased (P<0.05) in the LVR group.③A significant relation between mSR_E and LAPEF(r = 0.788, P <0.01), mSR_A and LAAEF(r = 0.804, P<0.01) could be found in the LVN and LVR group. Conclusions STI and RT-3DE may play important roles in the evaluation of left atrial function. The deformation ability of LA wall may decrease before left ventricular remodeling and it showed a significantly positive correlation with LA ejection function in patients with essential hypertension.
