Left atrial appendage function in patients with atrial fibrillation：tissue velocity imaging
JIA Yanyan
ZHOU Qing
SONG Hongning
GUO Ruiqiang
Abstract：Objective To observe the evaluation effect of echocardiography and tissue velocity imaging (TVI) tech-nology for assessing left atrial and left atrial appendage function of atrial fibrillation patients.Methods Twenty-nine patients with atrial fibrillation collected from July 2013 to March 2015, they were divided into paroxysmal atrial fibrillation (PAF, 15 patients), persistent atrial fibrillation (PeAF, 14 patients), and 15 patients with esophageal echocardiography with sinus rhythm as controls.Using three-level TVI technique to measure the tissue velocity parameters of 4 segments of the left atrium, the tissue velocity parameters of 8 segments of the left ventricle were measured by TVI technique.Results For the left atrial volume, control group<PAF group <PeAF group, left ventricular ejection fraction were control group>PAF group >PeAF group,there were significant differences( P <0.05),myocardial systolic velocity and diastolic velocity of the left atrium were control group>PAF group >PeAF group( P <0.05).Compared with the control group, the PAF group and PeAF group’s diastolic peak velocity’s differences were statistically significant ( P <0.05), but PAF group and PeAF group’ s diastolic peak velocity differences had no statistical significance( P >0.05).Left atrial appendage average systolic blood peak velocity and left atrial volume showed a negative correlation ( r =-0.696, P <0.01), and left atrial ejection fraction, average sys-tolic peak velocity, mean diastolic peak velocity of early stage were positively correlated ( r =0.787, r =0.805, r =0.679, all P <0.01).Conclusion Patients with atrial fibrillation’s left atrium and left atrial appendage function decreased and PAF patients more obviously, the level of left atrial function can predict left atrial appendage’ s systolic function, TVI can better as-sess left atrial and left atrial appendage function.
Keywords：EchocardiographyTissue velocity imagingAtrial fibrillationLeft atrial functionLeft atrial appendage function
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 1107-1110 )