Title: Assessment of left atrial function with two-dimensional speckle trackng imaging in patients with coronary artery diseases
Abstract: Objective To observe the clinical value of evaluation on the function of the left atrial with two-dimensional speckle tracking imaging(2D-STI) in patients with coronary artery diseases(CAD).Methods For CAD group(n=28) and control group(n=30),the maximal and minimum left atrial volume(LAVmax and LAVmin) were measured,and left atrial passive ejection fraction(LAPEF) and left atrial active ejection fraction(LAAEF) were calculated using Simpson's method.The sampling volume was placed on the left lateral atrial wall and interatrial septum 6—8 mm away from the annulus of mitral valve to obtain the strain rate curve.Peak strain rate indices(SRs,SRe and SRa) were measured with 2D-STI,and the mean peak strain rates(mSRs,mSRe and mSRa) were calculated.Results Compared with those of the control group,LAVmax,LAVmin,LAVP and LAAEF of CAD group significantly increased(all P0.05),while LAPEF of CAD group significantly decreased(P0.05).The mSRs and mSRe of left ventricular in CAD group were lower than those in control group(both P0.05),while mSRa increased compared with that in control group(P0.05).Coefficients of variation were 6.22%—7.91%(inter-examiner) and 5.31%—7.42%(intra-examiner).Conclusion 2D-STI can be used to evaluate the left atrium function of patients with CAD.
Publication Year: 2011
Publication Date: 2011-01-01
Language: en
Type: article
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