Reviewing left atrial function with two-dimension strain-speckle tracking imaging in patients with hypertension
NIU Hai-yan
GAO Yu
HOU Xin-yan
HUANG Xiao-ling
WANG Jian-hua
Abstract：Objective To review the left atrial function by using two-dimension strain-speckle tracking imaging (2D-STI) in patients with hypertension. Methods The patients [n=85, male 44, female 41, aged from 36 to 68 and average age=(53.7±9.6)] were chosen from May 2007 to Aug. 2012, and divided into LVN group (n=45) and LVH group (n=39) according to left ventricular mass index (LVMI). Other 30 cases with physical examinations were chosen as control group. The routine echocardiogram was used for detecting LVEDd, IVST, PWT, E/A, LAVmax and LAVmin, and calculating left myocardial mass, LVMI, LAVI and LATEF. 2D-STI was used for obtaining longitudinal strain curve of left atrium, recording peak strain and strain rate of different segment systolic phases of atrial wall (SSL and SRs), SRe and Sra, and calculating the mean (m). Results Compared with control group and LVN group, LAVI increased in LVH group [(22.8±7.3) ml/m2 vs. (32.6±6.1) ml/m2] and [(26.7±6.2) ml/m2 vs. (32.6±6.1) ml/m2, all P<0.05]. Compared with LVN group, LVMI [(135.3±18.7) g/m2 vs. (98.9±13.8) g/m2] increased in LVH group (P<0.05). Compared with control group, mSRs [(1.6±0.5)/s vs. (1.8±0.6)/s] increased in LVN group [(1.6±0.5)/s vs. (1.8±0.6)/s], and decreased in LVH group [(1.6±0.5)/s vs. (1.0±0.4)/s], mSRe decreased in LVN group [(-1.9± 0.5)/s vs. (-1.4±0.4)/s] and LVH group [(-1.9±0.5)/s vs. (-0.9±0.4)/s], and mSRa increased in LVN group [(-1.3 ±0.4)/s vs. (-1.7±0.5)/s] and LVH group [(-1.3±0.4)/s vs. (-2.0±0.5)/s, all P<0.05]. Compared with LVN group, mSRs [(1.8±0.6)/s vs. (1.0±0.4)/s] and mSRe [(-1.4±0.4)/s vs. (-0.9±0.4)/s] decreased, and mSRa [(-1.7±0.5)/s vs. (-2.0±0.5)/s] increased in LVH group (all P<0.05). Conclusion The patients with hypertension have decreased left atrial piping function and increased sub-pumping function, and those with left atrial hypertrophy have decreased left atrial conserving function. STI can quantitatively review the integrate function of left atrium without invasion in patients with hypertension.
Keywords：EchocardiographyHypertensionAtrial functionStrain
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( 80-83 )