Methodological comparison of left atrium classification according to the latest echocardiographic data from Chinese adults
10.3760/cma.j.issn.1004-4477.2019.01.002
- VernacularTitle:依国人最新超声心动图数据判定左心房大小的方法学比较
- Author:
Wenying JIN
1
;
Xinran SHI
;
Chao YU
;
Hong CHEN
;
Tiangang ZHU
Author Information
1. 北京大学人民医院心脏中心急性心肌梗死早期预警和干预北京市重点实验室 100044
- Keywords:
Echocardiography;
Left atrial diameter;
Left atrial volume
- From:
Chinese Journal of Ultrasonography
2019;28(1):7-11
- CountryChina
- Language:Chinese
-
Abstract:
Objective To analyze and compare the classification of left atrial size by different echocardiographic measurements based on the latest large sample of normal Chinese adults'echocardiographic data . Methods The echocardiography data of 1067 unselected adult outpatients were retrospectively analyzed . The outpatients were divided into normal or enlarged groups according to the left atrialantero-posteriordiameter(LAD)andleftatrialvolume(LAV),respectively.Results ①LADand LAV enlargement were found in 299 (28 .0％ ) patients and 449 (42 .1％ ) patients of the total population , respectively . ②There was a good positive linear correlation between LAD and LAV ( r = 0 .642 , P =0 .000) ,but the agreement for the classification of left atrial size by LAD and LAV was not ideal ( Kappa =0 .392 , P = 0 .000) . The majority of the patients ( 74 .6％ ) with abnormal LAD had abnormal LAV . Conversely ,among the patients with abnormal LAV ( 50 .3％ ) had normal LAD . ③ The sensitivity and specificity of judging left atrial enlargement were 76 .8％ and 66 .8％ for LAD>3 .7 cm in male ,and 74 .9％and 70 .6％ for LAD>3 .4 cm in female ,respectively . The sensitivity and specificity of judging severely left atrial enlargement were 75 .5％ and 78 .7％ for LAD>4 .0 cm in male ,and 84 .2％ and 75 .8％ for LAD>3 .7 cm in female ,respectively . Conclusions The agreement of the classification of left atrial size by LAD and LAV is limited . LAD-based assessment may result in an underestimation of left atrial size . When LAD is larger than 4 .0 cm for male or 3 .7 cm for female ,the accuracy of LAD in the diagnosis of left atrial enlargement is better .
