title: Ultrasound speckle tracking imaging contributes to early diagnosis of impaired left ventricular systolic function in patients with type 2 diabetes mellitus.
abstract: To investigate the value of ultrasound speckle tracking imaging (STI) in the assessment of the short-axis and long-axis systolic function of the left ventricle (LV) in patients with type 2 diabetes mellitus (DM), 100 subjects with normal ejection fraction were studied, including 41 patients with DM only (DM group), 22 patients with both DM and left ventricular hypertrophy (DH group), and 37 healthy subjects (control group). Left ventricle systolic function in the long axis defined as longitudinal strain, and that in the short axis defined as radial strain, apical and basal LV rotations, and LV twist were assessed respectively. The results showed that average peak strain in the long axis at basal, middle and apical levels, and global peak strain were significantly decreased in the patient groups when compared with the control group (P<0.001 for each). The parameters in DH group were significantly lower than those in DM group (P<0.01 for each). There were no significant differences in average radial peak strain in the short axis at different levels, and global peak strain among the three groups (P>0.05). Apical and basal LV rotations, and LV twist were greater in the patient groups than in the control group (P<0.01 for each). Basal LV rotation and LV twist were greater in DH group than those in DM group (P<0.01). It was concluded that STI may be used to identify early abnormalities in patients with type 2 DM that have normal left ventricular systolic function.
authors.affiliation: Department of Ultrasound, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology; Hubei Provincial Key Laboratory of Molecular Imaging, Wuhan, 430022, China. mahong91@163.com
authors.forename: Hong
authors.initials: H
authors.lastname: Ma
authors.forename: Mingxing
authors.initials: M
authors.lastname: Xie
authors.forename: Jing
authors.initials: J
authors.lastname: Wang
authors.forename: Qing
authors.initials: Q
authors.lastname: Lü
authors.forename: Xinfang
authors.initials: X
authors.lastname: Wang
authors.forename: Xiaofang
authors.initials: X
authors.lastname: Lu
authors.forename: Yali
authors.initials: Y
authors.lastname: Yang
authors.forename: Lijun
authors.initials: L
authors.lastname: Hu
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D016022:Case-Control Studies; D003924:Diabetes Mellitus, Type 2 / Q000150:complications* / Q000000981:diagnostic imaging; D042241:Early Diagnosis; D015150:Echocardiography, Doppler / Q000379:methods; D005260:Female; D006801:Humans; D017379:Hypertrophy, Left Ventricular / Q000000981:diagnostic imaging* / Q000209:etiology; D008297:Male; D008875:Middle Aged; D013318:Stroke Volume / Q000502:physiology; D013599:Systole; D018487:Ventricular Dysfunction, Left / Q000000981:diagnostic imaging* / Q000209:etiology; D016277:Ventricular Function, Left / Q000502:physiology