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The differences in left atrial function between ischemic and idiopathic dilated cardiomyopathy patients: A two‐dimensional speckle tracking imaging study
Author(s) -
Cao Sheng,
Zhou Qing,
Chen Jinling,
Hu Bo,
Guo Ruiqiang
Publication year - 2016
Publication title -
journal of clinical ultrasound
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.272
H-Index - 61
eISSN - 1097-0096
pISSN - 0091-2751
DOI - 10.1002/jcu.22352
Subject(s) - medicine , cardiology , ejection fraction , dilated cardiomyopathy , diastole , ventricle , systole , speckle tracking echocardiography , stroke volume , cardiac imaging , strain rate , cardiomyopathy , strain rate imaging , cardiac cycle , heart failure , blood pressure , materials science , metallurgy
Purpose To evaluate left atrial (LA) function in patients with ischemic (ICM) or idiopathic dilated (DCM) cardiomyopathy via two‐dimensional speckle‐tracking imaging. Methods We measured the LA maximum volume, minimum volume, and volume before the atrial systole, and calculated total emptying volume, expansion index, active emptying volume, and fraction. We measured strain and strain rate during systole and late diastole using two‐dimensional speckle‐tracking imaging, and analyzed correlations between variables. Results We found no significant differences in LA size, left ventricle (LV) end‐diastole diameter, LV ejection fraction (EF), E/A, E/e′, deceleration time of the E wave, and effective mitral regurgitant orifice area between the DCM and the ICM group. However, the LA expansion index, active EF, systolic and late diastolic strain, and strain rate were lower in the ICM group ( p < 0.05). The expansion index and active EF were positively correlated with the systolic strain rate and the absolute value of the late diastolic strain rate, respectively. Conclusions LA basic echocardiographic variables did not reflect the differences between ICM and DCM patients, but the systolic and late diastolic strain, as well as the strain rate, were lower in DCM patients. Two‐dimensional speckle‐tracking imaging is a promising method to differentiate these patients. © 2016 Wiley Periodicals, Inc. J Clin Ultrasound 44 :437–445, 2016;