Myocardial Systolic Strain in Normal Children Using a Tissue Tracking System

Sakata, Miho; Mori, Kazuhiro; Hayabuchi, Yasunobu; Suzuki, Mitsujiro; Nakagawa, Ryuji; Kubo, Shoji; Baba, Hirotaka

doi:10.2303/jecho.4.19

Cited by 2 publications

(1 citation statement)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A strain analysis of the regional function based on two-dimensional speckle tracking echocardiography has recently been developed, which offers a unique opportunity to gather information on regional deformation from a single gray-scale in the longitudinal and radial direction [9][10][11]. Little has been reported on the segmental myocardial strain of DMD patients.…”

Section: Introductionmentioning

confidence: 99%

Segmental Myocardial Strain of the Left Ventricle in Patients With Duchenne Muscular Dystrophy Using Two-Dimensional Speckle Tracking Echocardiography

et al. 2008

Self Cite

View full text Add to dashboard Cite

Background. Myocardial fibrosis occurs in the subepicardial myocardium of the left ventricular posterior wall in patients with Duchenne Muscular Dystrophy (DMD). The aim of this study was to clarify how these regional myocardial lesions might influence the focal cardiac movement using two-dimensional speckle tracking echocardiography and to investigate whether this new method is useful for the early detection of cardiac involvement in DMD patients. Methods and Results.Twelve DMD patients with a normal fractional shortening (FS) of the left ventricle and twelve healthy age-matched control subjects were enrolled in this study. The segmental radial strain of the left ventricle was recorded using the two-dimensional tissue tracking echocardiography, and the systolic maximal strain was measured.Thereafter, the peak systolic maximal strain was separately measured in the inner-half and outer-half of the left ventricular posterior wall. In DMD patients, the systolic maximal radial strain of the septum, posterior, and inferior walls were significantly lower than those in normal subjects. In particular, the systolic maximal radial strain of the posterior wall in the DMD patients was the most significantly decreased (P<0.0001). Six of the DMD patients had postsystolic shortening in the inner-half, and four of the DMD patients had systolic thinning in the outer-half of the posterior wall. Conclusions.Even if the FS is normal, the left ventricular posterior wall of DMD patients often showed an abnormal strain pattern. A segmental myocardial strain analysis might be useful for the early detection of cardiac involvement in DMD patients. (J Echocardiogr 2008; 4: 100-108)

show abstract

Section: Introductionmentioning

confidence: 99%

Segmental Myocardial Strain of the Left Ventricle in Patients With Duchenne Muscular Dystrophy Using Two-Dimensional Speckle Tracking Echocardiography

et al. 2008

Self Cite

View full text Add to dashboard Cite

show abstract

Assessment of Left Ventricular Dyssynchrony in Myocardial Infarction Using 2D Speckle Tracking Imaging

et al. 2008

View full text Add to dashboard Cite

Background. The assessment of left ventricular (LV) dyssynchrony is increasingly important in clinical cardiology.Methods. The aim of this study was to evaluate LV dyssynchrony in patients with myocardial infarction (MI) using 2D speckle tracking imaging. Basal, middle and apical 2D LV short-axis images were acquired in 41 patients with MI and in 15 age-matched controls. Using 2D strain software, radial strain, circumferential strain, time interval from the R wave on the electrocardiogram to peak radial strain (Trs), and time to peak circumferential strain (Tcs) were measured in 6 segments at each level. To assess LV dyssynchrony, the following dyssynchrony indices were calculated: Trs(cs)-18SD: the standard deviation (SD) of Trs(cs) in all 18 segments, Trs(cs)-12SD: the SD of Trs(cs) in 6 basal and 6 mid segments, Trs(cs)-6SD: the SD of Trs(cs) in 6 basal segments.Results. Trs(cs)-18SD was significantly prolonged in the MI group when compared to age-matched controls. Trs(cs)-

show abstract

Myocardial Systolic Strain in Normal Children Using a Tissue Tracking System

Cited by 2 publications

References 14 publications

Segmental Myocardial Strain of the Left Ventricle in Patients With Duchenne Muscular Dystrophy Using Two-Dimensional Speckle Tracking Echocardiography

Segmental Myocardial Strain of the Left Ventricle in Patients With Duchenne Muscular Dystrophy Using Two-Dimensional Speckle Tracking Echocardiography

Assessment of Left Ventricular Dyssynchrony in Myocardial Infarction Using 2D Speckle Tracking Imaging

Contact Info

Product

Resources

About