scholarly journals Selective echocardiographic analysis of epicardial and endocardial left ventricular rotational mechanics in an animal model of pericardial adhesions

2009 ◽  
Vol 10 (3) ◽  
pp. 357-362 ◽  
Author(s):  
M. S. Alharthi ◽  
P. Jiamsripong ◽  
A. Calleja ◽  
P. P. Sengupta ◽  
E. M. McMahon ◽  
...  
Keyword(s):  
Animal Model ◽  
Left Ventricular ◽  
Rotational Mechanics ◽  
Pericardial Adhesions

Quantification of Left Ventricular Twisting Mechanics by Velocity Vector Imaging in an Animal Model of Pericardial Adhesions

2009 ◽  
Vol 35 (12) ◽  
pp. 1963-1972 ◽  
Author(s):  
Panupong Jiamsripong ◽  
Mohsen S. Alharthi ◽  
Anna M. Calleja ◽  
Eileen M. McMahon ◽  
Farouk Mookadam ◽  
...  
Keyword(s):  
Animal Model ◽  
Velocity Vector ◽  
Left Ventricular ◽  
Velocity Vector Imaging ◽  
Pericardial Adhesions

scholarly journals Association of neonatal hypoxia with lasting changes in left ventricular gene expression: An animal model

2009 ◽  
Vol 138 (3) ◽  
pp. 538-546.e1 ◽  
Author(s):  
Danny Del Duca ◽  
Guoruey Wong ◽  
Phan Trieu ◽  
Demetra Rodaros ◽  
Athanasios Kouremenos ◽  
...  
Keyword(s):  
Gene Expression ◽  
Animal Model ◽  
Left Ventricular ◽  
Neonatal Hypoxia

scholarly journals Maturational patterns of left ventricular rotational mechanics in pre-term infants through 1 year of age

2020 ◽  
Vol 30 (9) ◽  
pp. 1238-1246
Author(s):  
Gloria C. Lehmann ◽  
Philip T. Levy ◽  
Meghna D. Patel ◽  
Timothy Sekarski ◽  
HongJie Gu ◽  
...  
Keyword(s):  
Repeated Measures ◽  
Neonatal Period ◽  
Ductus Arteriosus ◽  
Left Ventricular ◽  
Term Infants ◽  
Apical Rotation ◽  
Cardiopulmonary Complications ◽  
Rotational Mechanics ◽  
The Impact ◽  
Over Time

AbstractBackground:Pre-mature birth impacts left ventricular development, predisposing this population to long-term cardiovascular risk. The aims of this study were to investigate maturational changes in rotational properties from the neonatal period through 1 year of age and to discern the impact of cardiopulmonary complications of pre-maturity on these measures.Methods:Pre-term infants (<29 weeks at birth, n = 117) were prospectively enrolled and followed to 1-year corrected age. Left ventricular basal and apical rotation, twist, and torsion were measured by two-dimensional speckle-tracking echocardiography and analysed at 32 and 36 weeks post-menstrual age and 1-year corrected age. A mixed random effects model with repeated measures analysis was used to compare rotational mechanics over time. Torsion was compared in infants with and without complications of cardiopulmonary diseases of pre-maturity, specifically bronchopulmonary dysplasia, pulmonary hypertension, and patent ductus arteriosus.Results:Torsion decreased from 32 weeks post-menstrual age to 1-year corrected age in all pre-term infants (p < 0.001). The decline from 32 to 36 weeks post-menstrual age was more pronounced in infants with cardiopulmonary complications, but was similar to healthy pre-term infants from 36 weeks post-menstrual age to 1-year corrected age. The decline was due to directional and magnitude changes in apical rotation over time (p < 0.05).Conclusion:This study tracks maturational patterns of rotational mechanics in pre-term infants and reveals torsion declines from the neonatal period through 1 year. Cardiopulmonary diseases of pre-maturity may negatively impact rotational mechanics during the neonatal period, but the myocardium recovers by 1-year corrected age.

Large animal model of left ventricular aneurysm

1989 ◽  
Vol 48 (6) ◽  
pp. 838-845 ◽  
Author(s):  
Lawrence J. Markovitz ◽  
Edward B. Savage ◽  
Mark B. Ratcliffe ◽  
Joseph E. Bavaria ◽  
Gerhard Kreiner ◽  
...  
Keyword(s):  
Animal Model ◽  
Left Ventricular ◽  
Large Animal Model ◽  
Left Ventricular Aneurysm ◽  
Large Animal ◽  
Ventricular Aneurysm

scholarly journals Left Ventricular Rotational Mechanics in Children After Heart Transplantation

2016 ◽  
Vol 9 (9) ◽  
Author(s):  
Hythem M. Nawaytou ◽  
Putri Yubbu ◽  
Andrea E. Montero ◽  
Deipanjan Nandi ◽  
Matthew J. O’Connor ◽  
...  
Keyword(s):  
Heart Transplantation ◽  
Left Ventricular ◽  
Rotational Mechanics
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