Relationship of left atrial size and phasic function in hypertension

Ying Yang; Baowei Zhang; Litong QI; Wei MA; Lei Meng; Yong Huo

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Relationship of left atrial size and phasic function in hypertension

VernacularTitle:高血压患者左心房大小与时相功能的关系
Author: Ying YANG ; Baowei ZHANG ; Litong QI ; Wei MA ; Lei MENG ; Yong HUO
Publication Type:Journal Article
Keywords: Echocardiography; Hypertension; Atrial function,left; Speckle tracking imaging
From: Chinese Journal of Ultrasonography 2013;22(12):1013-1016
CountryChina
Language:Chinese
Abstract: Objective To evaluate the relationship of left atrial (LA) size and phasic function in hypertension (HT).Methods Data of 589 HT patients in an urban community of Beijing was analyzed.LA global longitudinal strain in late diastole (Sa),early diastole (Se),and total strain (Stot =Sa + Se),strain rate in late diastole (SRa),systole (SRs),and early diastole (SRe) were measured using off-line speckletracking echocardiography analyzing software,and were compared among groups (normal,mild,moderate and severe enlargement) divided by LA volume index.Results LA reservoir parameters[Stot:(21.4 ± 5.8)％,(20.8±5.4)％,(19.7±4.5％),(17.8±7.4)％,P =0.012;SRs:(1.1±0.3)s-1,(1.0±0.3)s-1,(1.0 ±0.2)s-1,(0.9 ±0.3)s-1,P =0.001] and contraction parameters[Sa:(11.7±4.0)％,(11.1 ± 3.3)％,(9.9±2.6)％,(8.9±4.5)％,P＜0.001;SRa:(1.6±0.6)s-1,(1.4±0.4)s 1,(1.3±0.4)s-1,(1.1 ± 0.6)s 1,P ＜ 0.001] deteriorated from normal to severe enlarged LA groups,while conduit parameters (Se and SRe) had no difference (P ＞0.05).Conclusions LA enlargement in HT associated with deteriorated reservoir and contraction function and unaffected conduit function.