Results 251 to 260 of about 1,622,476 (293)

Left Ventricular Hypertrophy With Strain and Aortic Stenosis

Circulation, 2014
Background— ECG left ventricular hypertrophy with strain is associated with an adverse prognosis in aortic stenosis. We investigated the mechanisms and outcomes associated with ECG strain. Methods and Results— One hundred and two patients (age, 70 years [range, 63–75 ...
David E Newby, Tanner Mills, Marc R Dweck   +2 more
exaly   +4 more sources

Right ventricular strain in Anderson-Fabry disease

International Journal of Cardiology, 2021
2D speckle tracking echocardiography (2DSTE) is superior to standard echocardiography in the assessment of subtle right ventricle (RV) systolic dysfunction. In this study we aimed to: 1) test the hypothesis that 2DSTE may unveil subtle RV systolic dysfunction in patients with Fabry disease; 2) investigate whether the physiologic difference between the ...
Lillo R., Graziani F., Panaioli E., Mencarelli E., Pieroni M., Camporeale A., Manna R., Sicignano L. L., Verrecchia E., Lombardo A., Lanza G. A., Crea F.   +11 more
openaire   +3 more sources

CMR Feature Tracking Left Ventricular Strain-Rate Predicts Ventricular Tachyarrhythmia, but Not Deterioration of Ventricular Function in Patients With Repaired Tetralogy of Fallot [PDF]

International Journal of Cardiology, 2019
Background: Myocardial strain has been shown to predict outcome in various cardiovascular diseases, including congenital heart diseases. The aim of this study was to evaluate the predictive value of cardiac magnetic resonance (CMR) feature-tracking ...
Quint A J Hagdorn, Sophie L Meyer
exaly   +2 more sources

Ventricular Strain and Ventricular Hypertrophy

New England Journal of Medicine, 1949
WHEN medical terminology was less precise the expression "strained heart" was employed at times to describe obscurely but ominously diseased hearts.
openaire   +2 more sources

Determinants of left ventricular shear strain

American Journal of Physiology-Heart and Circulatory Physiology, 2009
Mathematical models of cardiac mechanics can potentially be used to relate abnormal cardiac deformation, as measured noninvasively by ultrasound strain rate imaging or magnetic resonance tagging (MRT), to the underlying pathology. However, with current models, the correct prediction of wall shear strain has proven to be difficult, even for the normal ...
Bovendeerd, P.H.M., Kroon, J.W., Delhaas, T.   +2 more
openaire   +2 more sources

Right ventricular function by strain echocardiography

Current Opinion in Cardiology, 2010
Right ventricular (RV) function is an independent determinant of prognosis in a number of pathologies, but its accurate quantification by echocardiography remains a challenge. With the evolving clinical utility of RV strain and strain imaging, several studies have used it to investigate normal and pathologic conditions.
Andre, La Gerche, Ruxandra, Jurcut, Jens-Uwe, Voigt   +2 more
openaire   +2 more sources

Residual Strain in Ischemic Ventricular Myocardium

Journal of Biomechanical Engineering, 1998
Structural remodeling during acute myocardial infarction affects ventricular wall stress and strain. To see whether acute myocardial infarction alters residual stress and strain in the left ventricle (LV), we measured opening angles in rat hearts after 30 minutes of left coronary artery occlusion.
S R, Summerour, J L, Emery, B, Fazeli, J H, Omens, A D, McCulloch   +4 more
openaire   +2 more sources

Patterns of Left Ventricular Longitudinal Strain and Strain Rate in Olympic Athletes

Journal of the American Society of Echocardiography, 2015
Two-dimensional speckle-tracking echocardiography is an emerging modality for the assessment of systolic and diastolic myocardial deformation in a broad variety of clinical scenarios. However, normal values and physiologic limits of left ventricular strain and strain rate in trained athletes are largely undefined.Two hundred consecutive Olympic ...
Stefano Caselli, Dalma Montesanti, Camillo Autore, Fernando M. Di Paolo, Cataldo Pisicchio, Maria Rosaria Squeo, Beatrice Musumeci, Antonio Spataro, Natesa G. Pandian, and Antonio Pelliccia   +9 more
openaire   +3 more sources

Strain Softening in Rat Left Ventricular Myocardium

Journal of Biomechanical Engineering, 1994
We investigated whether strain softening (or the Mullins effect) may explain the reduced left ventricular stiffness previously associated with the strain-history-dependent preconditioning phenomenon. Passive pressure–volume relations were measured in the isolated, arrested rat heart during LV balloon inflation and deflation cycles.
J L, Emery, J H, Omens, A D, McCulloch
openaire   +2 more sources

Vendor-Neutral Right Ventricular Strain Measurement

Journal of Cardiothoracic and Vascular Anesthesia, 2018
To test the feasibility and reliability of using a vendor-neutral platform to evaluate right ventricular (RV) strain. Reliability was determined by comparing intra- and inter-observer variability between RV strain assessments. The secondary objective was to assess strain's correlation with conventional RV functional parameters to evaluate its ...
Zhifeng, Gao, Jeffrey, Bortman, Faraz, Mahmood, John, Mitchell, Feroze, Mahmood, Robina, Matyal   +5 more
openaire   +2 more sources