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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The Global Longitudinal Strain in Renal Transplant Recipients and Immunosuppressive Regimen.
Marta Obremska,Maciej Szymczak,Krzysztof Letachowicz,Dorota Zyśko,Maria Boratyńska,Marceli Łukaszewski,Magdalena Krajewska +6 more
TL;DR: The frequency of impaired GLS in RTr was similar regardless of the type of the immunosuppressive regimen and was associated with duration of HD before KTx.
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Evaluation of left cardiac chamber function with cardiac magnetic resonance and association with outcome in patients with systemic sclerosis
Steele C Butcher,J. L. Vos,Federico Fortuni,Xavier Galloo,Sophie I E Liem,Jeroen J. Bax,Victoria Delgado,Madelon C. Vonk,Sander I. van Leuven,Miranda M. Snoeren,S. El Messaoudi,Jeska K de Vries-Bouwstra,Robert J. Nijveldt,Nina Ajmone Marsan +13 more
TL;DR: In this paper , the authors investigated whether lower values of feature-tracking cardiovascular magnetic resonance (CMR)-derived left atrial reservoir strain (LARS) and impaired left ventricular (LV) global longitudinal strain (GLS) were associated with the presence of symptoms and long-term prognosis in patients with SSc.
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Essential Hypertension Worsens Left Ventricular Contractility in Systemic Sclerosis.
Valentina Mercurio,Alicia M. Hinze,Laura K. Hummers,Fredrick M. Wigley,Ami A. Shah,Monica Mukherjee +5 more
TL;DR: In this paper, the effects of essential hypertension (HTN) on left ventricular (LV) contractility in patients with SSc using echocardiographic speckle-derived global longitudinal strain (GLS).
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Speckle Tracking Imaging in Patients with Pulmonary Hypertension.
Omar Prieto,Tomás F. Cianciulli,Alejandro Stewart-Harris,Andrea Rodriguez,María C. Saccheri,Jorge A. Lax,Lucía Kazelian,Laura Vanina Argento,Gerardo Manuel Marambio,Juan Gagliardi +9 more
TL;DR: This study showed impaired LV contractility in patients with PH assessed by speckle tracking strain, and RV free wall longitudinal strain does not correlate with any of the measurements of RV systolic function obtained by 2D echocardiography.
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Impact of active fluid management on cardiac hemodynamic and mechanics in patients on maintenance hemodialysis
TL;DR: Active fluid management, guided by bioimpedance spectroscopy had positive impact on cardiac hemodynamics and mechanics in study patients and could improve clinical decisions regarding their optimal weight and further clinical course.
References
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Journal ArticleDOI
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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