Myocardial strain measurement with 2-dimensional speckle-tracking echocardiography: definition of normal range.
Thomas H. Marwick,Rodel Leano,Joseph Brown,Jing Ping Sun,Rainer Hoffmann,Peter Lysyansky,Michael Becker,James D. Thomas +7 more
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TLDR
This multicenter study of nearly 250 volunteers without evidence of cardiovascular disease showed an average LV peak systolic strain of -18.6 +/- 0.1% and there was significant segmental variation of regional strain to necessitate the use of site-specific normal ranges.Abstract:
The interpretation of wall motion is an important component of echocardiography but remains a source of variation between observers. It has been believed that automated quantification of left ventricular (LV) systolic function by measurement of LV systolic strain from speckle-tracking echocardiography might be helpful. This multicenter study of nearly 250 volunteers without evidence of cardiovascular disease showed an average LV peak systolic strain of −18.6 ± 0.1%. Although strain was influenced by weight, blood pressure, and heart rate, these features accounted for only 16% of variance. However, there was significant segmental variation of regional strain to necessitate the use of site-specific normal ranges.read more
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Cardiac function in 10-year-old twins following different fetal therapies for twin-twin transfusion syndrome.
Helena M. Gardiner,H. Matsui,M. Roughton,Stephen E. Greenwald,Anke Diemert,Myles J.O. Taylor,Kurt Hecher +6 more
TL;DR: To compare cardiac function at 10 years of age in four groups of monochorionic diamniotic twin pairs, twins that had had twin–twin transfusion syndrome (TTTS) managed by amnioreduction or laser photocoagulation are compared.
Journal ArticleDOI
Evaluation of left ventricular global functions with speckle tracking echocardiography in patients recovered from COVID-19.
TL;DR: In this paper, the authors evaluated by global longitudinal strain whether there is subclinical myocardial deformation after COVID-19 infection and found that the deformation rate was higher in those who developed myocardious injury during hospitalization.
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Global longitudinal strain: a useful everyday measurement?
TL;DR: Analysis by direct comparison, intra-class correlation (ICC), coefficient of variation (CV) and Bland–Altman plots demonstrated that GLS is a more reproducible measurement than 2DEF, important to prevent clinical decisions being erroneously based on variation in operator measurement.
Journal ArticleDOI
Effects of Sedentary Aging and Lifelong Exercise on Left Ventricular Systolic Function.
Erin J. Howden,Graeme Carrick-Ranson,Satyam Sarma,Michinari Hieda,Naoki Fujimoto,Benjamin D. Levine +5 more
TL;DR: Sedentary aging leads to a reduction in systolic LS, which is attenuated by committed lifelong exercise due to improved LV diastolic filling, which was independent of aging and lifelong exercise.
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Reversibility of left ventricular mechanical dysfunction in patients with hypertensive heart disease.
Susan Cheng,Amil M. Shah,Juan Pablo Albisu,Akshay S. Desai,Robert Hilkert,Joseph L. Izzo,Suzanne Oparil,Bertram Pitt,Scott D. Solomon +8 more
TL;DR: In patients with hypertensive heart disease and normal left ventricular ejection fraction, abnormalities inleft ventricular mechanical systolic function can be ameliorated in the setting of targeted antihypertensive treatment.
References
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Two-dimensional strain-a novel software for real-time quantitative echocardiographic assessment of myocardial function.
Marina Leitman,P. Lysyansky,Stanislav Sidenko,Vladimir Shir,Eli Peleg,Michal Binenbaum,Edo Kaluski,Ricardo Krakover,Zvi Vered +8 more
TL;DR: In this paper, the authors assess the feasibility of 2D strain, a software for real-time quantitative echocardiographic assessment of myocardial function, which is based on the estimation that a discrete set of tissue velocities are present per each of many small elements on the ultrasound image.
Journal ArticleDOI
Quantitative assessment of intrinsic regional myocardial deformation by Doppler strain rate echocardiography in humans. Validation against three-dimensional tagged magnetic resonance imaging
TL;DR: The present study demonstrates the ability of Doppler echocardiography to measure myocardial strains in a clinical setting and may represent a new powerful method for quantifying left ventricular function noninvasively in humans.
Journal ArticleDOI
Can natural strain and strain rate quantify regional myocardial deformation? A study in healthy subjects
Mirosław Kowalski,Tomasz Kukulski,Fadi Jamal,Jan D'hooge,Frank Weidemann,Frank Rademakers,Bart Bijnens,Liv Hatle,George R. Sutherland +8 more
TL;DR: SR/epsilon imaging appears to be a robust technique for quantifying regional myocardial deformation, and values describing radial deformation were higher than the corresponding SR/ep silon values obtained for longitudinal deformation.
Journal ArticleDOI
Noninvasive quantification of regional myocardial function using Doppler-derived velocity, displacement, strain rate, and strain in healthy volunteers: effects of aging
Jing Ping Sun,Zoran B. Popović,Neil L. Greenberg,Xiao Fang Xu,Craig R. Asher,William J. Stewart,James D. Thomas +6 more
TL;DR: Although myocardial velocities and strain rate showed significant dependence on age, displacement and peak systolic strain measures were less affected, and Doppler tissue echocardiography measurements showed a strong dependence on wall segment position.
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