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《Chinese Journal of Medical Imaging Technology》 2011-08
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Assessment of left atrial function in patients with paroxysmal atrial fibrillation with speckle tracking imaging

WANG Chun-mei,SHI Qi,MU Yu-ming,LI Yan-hong,JING Li-hua(Department of Echocardiography,Ultrasound Medical Center,the First Affiliated Hospital of Xinjiang Medical University,Urumqi 830011,China)  
Objective To evaluate left atrial(LA) function in paroxysmal atrial fibrillation(PAF) patients with two-dimensional speckle tracking imaging(STI) technology.Methods Thirty patients with PAF(PAF group) and 30 healthy subjects(control group) were enrolled in this study.The left atrial diameter(LAD),E peak(E),A peak(A),E/A,pulmonary venous flow during systole(PVs),pulmonary venous flow during diastole(PVd),S/D,maximal reversal flow velocity during atrial contraction(PVa),the LA maximal,minimal and pre-systolic volume(LAVmax,LAVmin and LAVp),LA passive ejection fraction(LAPEF),LA active ejection fraction(LAAEF) were measured and calculated.The strain rate curve was acquired in each LA segment(anterior,posterior,lateral,inferior and septal) with STI.The peak strain rate of systolic,early and late diastolic(SRs,SRe,SRa) of left atrial wall and calculated the average strain rate(mSRs,mSRe,mSRa) were measured.Results Compared to control group,LAD,LAVmax,LAVp,LAVmin increased(P0.05),and LAAEF,LAPEF decreased(P0.05) in PAF group;E,E/A increased and A,PVs,PVd,S/D decreased in PAF group(P0.05).Compared with control group,SRs,SRe and SRa decreased in each wall of LA in PAF group(P0.05).In control group,there was negative correlation between SRs and SRe,as well as SRs and SRa(r=-0.347,-0.384,both P0.05).In PAF group,no correlation was found among SRs,SRe and SRa(P0.05),whereas positive correlation between mSRa and LAAEF was detected(r=0.78,P0.01).Conclusion The strain rate of each wall of LA decreased,the mutual compensatory function of the pump function,conduit function and reservoir function weakened or disappeared in PAF patients.
【CateGory Index】: R541.75
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【Citations】
Chinese Journal Full-text Database 2 Hits
1 ZHU Wen-hui,TANG Shui-juan,XIAO Ji-dong,HE Wei,LI Rui-zhen(Department of Ultrasound,the Third Xiangya Hospital,Central South University,Changsha 410013,China);Structure and function of left atrium before and after circumferential electrical isolation of pulmonary veins for paroxysm atrial fibrillation[J];Chinese Journal of Medical Imaging Technology;2007-11
2 REN Wei-dong1, LIU Shuang2, MA Chun-yan2, YAN Nan3, LI Xiu-yun1, XIAO Yang-jie1(1.Department of Ultrasound, Shengjing Hospital of China Medical University, Shenyang 110004, China; 2.Department of Cardiovascular Function, the First Hospital of China Medical University, Shenyang 110001, China; 3.Department of Ultrasound, Dazhong Hospital, Shenyang 110000, China);Evaluation of impact of cardiac resynchronization therapy on left atrial function with two-dimensional speckle tracking echocardiography[J];Chinese Journal of Medical Imaging Technology;2010-09
【Co-citations】
Chinese Journal Full-text Database 2 Hits
1 XU Hai-ying1,YE Xue-cun2(1.Department of Medicine,Graduate College,Nanchang University,Nanchang 330006,China;2.Department of Diagnostic Ultrasound,People's Hospital of Jiangxi Province,Nanchang 330006,China);Interrelationship between the structure,function of left atrial appendage and thrombosis in patients with atrial fibrillation[J];Chinese Journal of Medical Imaging Technology;2010-11
2 YE Xiao-guang,TANG Li,MA Chun-yan,HAN Shu,CHENG Yan-bin,YANG Jun(Department of Cardiovascular Function,the First Hosptial of China Medical University, Shenyang 110001,China);Speckle tracking imaging in evaluation on left ventricular twist and untwist in patients with uremia and patients with primary hypertension[J];Chinese Journal of Medical Imaging Technology;2011-03
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1 YANG Yanzong, DENG Hua, LIU Shaowen, et al. Department of Cardiology, First Affiliated Hospital of Dalian Medical University, Dalian 116011, China;Electrical isolation of cardiac muscle sleeves by radiofrequency ablation to control atrial fibrillation[J];Hainan Medical Journal;2002-12
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