ventricular torsion
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Author(s):  
Daniel Alexander Castellanos ◽  
Kateřina Škardová ◽  
Abhijit Bhattaru ◽  
Ezgi Berberoglu ◽  
Gerald Greil ◽  
...  


Author(s):  
Daniel Alexander Castellanos ◽  
Kateřina Škardová ◽  
Abhijit Bhattaru ◽  
Ezgi Berberoglu ◽  
Gerald Greil ◽  
...  


2020 ◽  
Vol 13 (12) ◽  
pp. 2677-2678
Author(s):  
Gabrielle M. Colvert ◽  
Juan E. Ortuño ◽  
W. Patricia Bandettini ◽  
Marcus Y. Chen ◽  
María J. Ledesma-Carbayo ◽  
...  


2020 ◽  
Vol 14 (3) ◽  
pp. S53
Author(s):  
G. Colvert ◽  
J. Ortuño ◽  
M. Chen ◽  
M. Ledesma-Carbayo ◽  
E. McVeigh


PLoS ONE ◽  
2020 ◽  
Vol 15 (5) ◽  
pp. e0232544
Author(s):  
Ralf Kaiser ◽  
Dan Liu ◽  
Paula Arias-Loza ◽  
Kai Hu ◽  
Katharina Grotemeyer ◽  
...  


2019 ◽  
Vol 141 (6) ◽  
Author(s):  
Xiaoyan Zhang ◽  
Zhan-Qiu Liu ◽  
Dara Singh ◽  
David K. Powell ◽  
Charles S. Chung ◽  
...  

The present study assessed the acute effects of isoproterenol on left ventricular (LV) mechanics in healthy rats with the hypothesis that β-adrenergic stimulation influences the mechanics of different myocardial regions of the LV wall in different ways. To accomplish this, magnetic resonance images were obtained in the LV of healthy rats with or without isoproterenol infusion. The LV contours were divided into basal, midventricular, and apical regions. Additionally, the midventricular myocardium was divided into three transmural layers with each layer partitioned into four segments (i.e., septal, inferior, lateral, and anterior). Peak systolic strains and torsion were quantified for each region. Isoproterenol significantly increased peak systolic radial strain and circumferential-longitudinal (CL) shear strain, as well as ventricular torsion, throughout the basal, midventricle, and apical regions. In the midventricle, isoproterenol significantly increased peak systolic radial strain, and induced significant increases in peak systolic circumferential strain and longitudinal strain in the septum. Isoproterenol consistently increased peak systolic CL shear strain in all midventricular segments. Ventricular torsion was significantly increased in nearly all segments except the inferior subendocardium. The effects of isoproterenol on LV systolic mechanics (i.e., three-dimensional (3D) strains and torsion) in healthy rats depend on the region. This region dependency is also strain component-specific. These results provide insight into the regional response of LV mechanics to β-adrenergic stimulation in rats and could act as a baseline for future studies on subclinical abnormalities associated with the inotropic response in heart disease.



2019 ◽  
Vol 83 (3) ◽  
pp. 595-603 ◽  
Author(s):  
Mohamed Rady ◽  
Stefan Ulbrich ◽  
Felix Heidrich ◽  
Stefanie Jellinghaus ◽  
Karim Ibrahim ◽  
...  


2019 ◽  
Vol 1 (2) ◽  
pp. 78-86 ◽  
Author(s):  
Shingo Minatoguchi ◽  
Takashi Yoshizane ◽  
Ryuhei Tanaka ◽  
Makoto Iwama ◽  
Takatomo Watanabe ◽  
...  


2019 ◽  
Vol 09 (02) ◽  
pp. 109-121
Author(s):  
Walaa Farid ◽  
Rehab Yaseen ◽  
Amani Ouf


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