Pediatric Reference Values and Z Score Equations for Left Ventricular Systolic Strain Measured by Two-Dimensional Speckle-Tracking Echocardiography

Dallaire, Frédéric; Slorach, Cameron; Bradley, Timothy J.; Wang, Hui; Sarkola, Taisto; Friedberg, Mark K.; Jaeggi, Edgar; Dragulescu, Andréea; Mahmud, Farid H; Daneman, Denis; Mertens, Luc

doi:10.1016/j.echo.2016.03.018

Cited by 54 publications

(48 citation statements)

References 25 publications

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“…STE has been recently started to use widely for children, but there are few studies evaluating the normal limits and z scores of the strain values in children . Studies evaluating myocardial function in BTM patients with STE are scarce in literature .…”

Section: Discussionmentioning

confidence: 99%

Assessment of left ventricular functions and myocardial iron load with tissue Doppler and speckle tracking echocardiography and T2* MRI in patients with β‐thalassemia major

et al. 2017

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Section: Discussionmentioning

confidence: 99%

Assessment of left ventricular functions and myocardial iron load with tissue Doppler and speckle tracking echocardiography and T2* MRI in patients with β‐thalassemia major

et al. 2017

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“…Inter Dallaire et al found a weak but statistically significant relation between body surface area and age with most circumferential strain parameterslower strain with increasing age or body surface area. 11 In a meta-analysis study no association was found between age and circumferential strain. 12 We found a weak, but statistically significant relation between age and global left ventricular longitudinal peak systolic strain, with slightly decreasing strain values with increasing age.…”

Section: Intra-observermentioning

confidence: 95%

“…Reference value studies for myocardial deformation parameters in children are relatively scarce. Reference values on segmental and global values of two-dimensional longitudinal, radial, and circumferential strain of the left ventricle have been published using the General Electric platform, 10,11,22,23 p < 0.001 for comparison with all other segment, paired sample t-test; 2 1 < 0.01 versus lateral; 3 p < 0.001 versus posterior, 4 p = 0.001 versusinferior; 5 p < 0.001 versus inferior and septal; 6 p < 0.001 versus inferior and septal; 7 p = 0.01 versus septal.…”

Section: Reference Value Studies On Myocardial Deformationmentioning

confidence: 99%

Reference values for two-dimensional myocardial strain echocardiography of the left ventricle in healthy children

et al. 2019

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BackgroundMyocardial deformation by speckle tracking echocardiography provides additional information on left ventricular function. Values of myocardial deformation (strain and strain rate) depend on the type of ultrasound machine and software that is used. Normative values for QLAB (Philips) are scarce, especially for children. It is important to evaluate the influence of age and body size on myocardial deformation parameters, since anthropometrics strongly influence many standard echocardiographic parameters. The aim of this study was to provide comprehensive normal values for myocardial deformation of the left ventricle using a Philips platform and to evaluate the association with anthropometric and standard echocardiographic parameters.MethodsHealthy children between 1 and 18 years of age were prospectively examined using a standard echocardiographic protocol. Short-axis and apical four-chamber, two-chamber, and three-chamber views were used to measure peak systolic circumferential and longitudinal strain and systolic and early diastolic strain rate of the left ventricle using dedicated software.ResultsA total of 103 children were included with a mean age of 10.8 and inter-quartile range 7.3–14.3 years. Global circumferential strain values (±SD) were −24.2±3.5% at basal, −25.8±3.5% at papillary muscle, and −31.9±6.2% at apex levels. Global left ventricular longitudinal strain values were −20.6±2.6% in apical four-chamber view, −20.9±2.7% in apical two-chamber, and −21.0 ±2.7% in apical three-chamber. Age was associated with longitudinal strain, longitudinal systolic and early diastolic strain rate, but not with circumferential strain.ConclusionsNormal values for left ventricular deformation parameters in children are obtained using a Philips platform. Age partly explains normal variation of strain and strain rate.

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“…Then, Z-score normalization [13] for all samples was performed, and the expressions of genes in the samples were subject to standardized normal distribution with mean value = 0 and the variance = 1.…”

Section: Methodsmentioning

confidence: 99%

Possible pathways used to predict different stages of lung adenocarcinoma

Chen

Duan²,

Yang³

et al. 2017

Medicine

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Pediatric Reference Values and Z Score Equations for Left Ventricular Systolic Strain Measured by Two-Dimensional Speckle-Tracking Echocardiography

Cited by 54 publications

References 25 publications

Assessment of left ventricular functions and myocardial iron load with tissue Doppler and speckle tracking echocardiography and T2* MRI in patients with β‐thalassemia major

Assessment of left ventricular functions and myocardial iron load with tissue Doppler and speckle tracking echocardiography and T2* MRI in patients with β‐thalassemia major

Reference values for two-dimensional myocardial strain echocardiography of the left ventricle in healthy children

Possible pathways used to predict different stages of lung adenocarcinoma

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