Evaluation of left atrial function in patients with dilated cardiomyopathy by echocardiography
10.3760/cma.j.issn.1004-4477.2011.10.005
- VernacularTitle:超声心动图评价扩张型心肌病患者左心房功能及其临床意义
- Author:
Tian WU
;
Ruiqiang GUO
;
Jinling CHEN
;
Qing ZHOU
- Publication Type:Journal Article
- Keywords:
Echocardiography;
Cardiomyopathy,dilated;
Atrial function,left
- From:
Chinese Journal of Ultrasonography
2011;20(10):842-845
- CountryChina
- Language:Chinese
-
Abstract:
ObjectiveTo evaluate left atrial function in patients with dilated cardiomyopathy (DCM)by echocardiography.MethodsThere were 31 patients with DCM and 30 controls in this study.Left atrial diameter (LAD),left ventricular diameter (LVD) were measured by M-mode in parasternal long-axis view.Mitral flow parameters including peak velocities during early diastole (E) and late diastole (A) were measured by pulsed-wave Doppler echocardiography,and the E/A ratio was calculated.Left ventricular ejection fraction (LVEF) was measured with Simpson′s method on the 2-chamber (Ap2c) and 4-chamber (Ap4c) views.Strain rate (SR) imaging was performed on all cases.Peak SR was measured at each segment (septal,lateral,posterior,anterior,and inferior walls) and mean peak systolic left atrial SR (mLASRs),mean peak early diastolic left atrial SR (mLASRe) and mean peak atrial systolic left atrial SR (mLASRa) were calculated by averaging the data in all segments.ResultsCompared with controls,LAD and LVD were significantly increased ( P ＜0.01 ),the E/A ratio had no significant changes ( P ＞0.05).LVEF and left atrial fractional shortening (LAFS) turned lower,mLASRs,mLASRe,and mLASRa of DCM decreased significantly ( P ＜ 0.05).mLASRa of DCM correlated positively with LAFS ( r =0.79,P ＜ 0.01 ).ConclusionsThe left atrial function of DCM decreased,including the reservoir,conduit and pump function.Echocardiography could evaluate the left atrial function of DCM quantitatively.
