Early detection of abnormal left atrial function by speckle-tracking in hypertensive patients
10.3760/cma.j.issn.1004-4477.2012.08.007
- VernacularTitle:斑点追踪技术评价高血压患者左心房功能的早期改变
- Author:
Ying YANG
;
Guoxiang WU
;
Baowei ZHANG
;
Litong QI
;
Feng CHEN
;
Ronghui YU
;
Yong HUO
- Publication Type:Journal Article
- Keywords:
Echocardiography;
Hypertension;
Atrial function,left;
Speckle tracking imaging
- From:
Chinese Journal of Ultrasonography
2012;21(8):661-664
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the feasibility of speckle-tracking echocardiography in detecting left atrial (LA) function impairment in early hypertensive (HT) patients.Methods Echocardiography was performed in 154 HT patients with LA volume index ＜28 ml/m2 and 64 age/gender-matched control subjects.LA global longitudinal strain in late diastole (Sa),systole (Ss),and total strain (Stot =Sa + Ss),strain rate in late diastole (SRa),systole (SRs),and early diastole (SRe) were measured using off-line speckle-tracking analyzing software in apical 4 chamber view.Results Both parameters reflecting LA reservoir function [Stot (23.7 ± 6.0) ％ vs (25.7 ± 5.9) ％,p =0.03 and SRs ( 1.2 ± 0.3) s- 1 vs ( 1.3 ±0.3) s-1,P =0.03]and conduit function [Ss (12.0 ± 5.1)％ vs (14.0±5.7)％,P =0.02 and SRe (1.0 ± 0.4)s- 1 vs ( 1.2 ± 0.4)s- 1,p ＜0.001 ]decreased significantly in HT group than control,while LA pump function parameters (Sa and SRa) had no differences.Ss,Stot and SRe correlated significantly with HT and HT duration.Conclusions LA phasic function are impaired in HT patients with normal LA size.Speckle tracking echocardiography is a promising tool for the early detection of LA dysfunction.
