Early detection of abnormal left atrial function by speckle-tracking in hypertensive patients / 中华超声影像学杂志
Chinese Journal of Ultrasonography
;
(12): 661-664, 2012.
Article
in Chinese
| WPRIM
| ID: wpr-427632
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.
Full text:
Available
Index:
WPRIM (Western Pacific)
Type of study:
Diagnostic study
/
Screening study
Language:
Chinese
Journal:
Chinese Journal of Ultrasonography
Year:
2012
Type:
Article
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