The Value of Aneurysm Volume and Myocardial Strain Rate for Evaluating Cardiac Function of Ischemia-Related Left Ventricular Aneurysm in a Rabbit Model Using Real Time Three-Dimensional Echocardiographic Imaging Combined with Speckle Tracking Imaging

2013 ◽  
Vol 30 (7) ◽  
pp. 837-842 ◽  
Author(s):  
Hong Zhai ◽  
Yuming Mu ◽  
Lina Guan ◽  
Yanhong Li
Keyword(s):  
Cardiac Function ◽  
Speckle Tracking ◽  
Myocardial Strain ◽  
Rabbit Model ◽  
Three Dimensional ◽  
Left Ventricular ◽  
Left Ventricular Aneurysm ◽  
Speckle Tracking Imaging ◽  
Ventricular Aneurysm ◽  
Aneurysm Volume

GW24-e1717 Assessment on the changes of myocardial strain rate and aneurysm volume of left ventricular aneurysm in a rabbit model

Heart ◽  
2013 ◽  
Vol 99 (Suppl 3) ◽  
pp. A261.2-A261 ◽  
Author(s):  
Mu YuMing ◽  
Zhai Hong ◽  
Guliqiman Hhuojiaabudula ◽  
Wang Chunmei ◽  
Han Wei ◽  
...  
Keyword(s):  
Strain Rate ◽  
Myocardial Strain ◽  
Rabbit Model ◽  
Left Ventricular ◽  
Left Ventricular Aneurysm ◽  
Ventricular Aneurysm ◽  
Aneurysm Volume

scholarly journals Case Study: Using 3D Speckle Tracking Echocardiography for Left Ventricular Aneurysm Diagnosis

2020 ◽  
pp. 90-95
Author(s):  
O. A. Mazur ◽  
L. M. Hrubyak ◽  
O. V. Kupchynskyi ◽  
N. V. Bankovska
Keyword(s):  
Coronary Artery ◽  
Coronary Angiography ◽  
Speckle Tracking ◽  
Speckle Tracking Echocardiography ◽  
Left Ventricular ◽  
Left Ventricular Geometry ◽  
Left Ventricular Aneurysm ◽  
Apical Region ◽  
Ventricular Aneurysm

Nowadays magnetic resonance imaging (MRI) is a gold standard for diagnosing abnormalities of left ventricular geometry and function, however, it is not universally accessible. Furthermore, MRI is not compatible with pacemakers and similar devices. 3D speckle tracking echocardiography (3D STE) is a cutting-edge echocardiography imaging technique for myocardial deformation assessment. As such, 3D STE looks very promising for diagnosing structural complications of myocardial infarction (MI) and choosing the optimal surgical techniques. In this case study, we used 3D STE to assess left ventricular function in a patient with left ventricular aneurysm. The patient was admitted to National Amosov Institute of Cardiovascular Surgery three weeks after having a second MI (the first MI was reported 4 years ago). His coronary angiography showed diffuse coronary artery disease. 2D echocardiography (performed on Toshiba Artida) results: end-diastolic volume (EDV) 206 ml, end-systolic volume (ESV) 141 ml, ejection fraction (EF) (Simpson’s method) 31%. An object sized 2.2*1.6 cm was discovered in the apical region (left ventricular thrombus). 3D STE results: EDV 209 ml, ESV 182 ml, EF 13%. Global area strain (GAS) was considerably decreased (–13.7 %) showing the pattern of ischemic cardiomyopathy with multivessel disease. Due to several reasons, it was impossible to obtain an MRI scan, so a CT coronary angiography was performed (Toshiba Aquilion One). The results of multi-slice computed tomography (MSCT) were consistent with those of echocardiography. According to the results, the initial plan to resect the apical akinesia region was ruled out. The patient underwent coronary artery bypass grafting (CABG) (4 shunts), the removal of thrombi from the left ventricle (additional fresh thrombi were discovered during the surgical intervention), and left ventricular aneurysm repair under cardiopulmonary bypass. Post-treatment 3D STE results: EDV dropped to 135 ml, EF rose from 13% to 32%. GAS increased up to –20.4 %, while the strains of all segments increased to subnormal levels. The overall dynamics was positive, and the patient was discharged to undergo postoperative rehabilitation. The case shows that 3D STE data is consistent with CT data in patients with abnormal ventricular remodeling. 3D STE is a good method for differentiation between akinetic scar tissue and a dyskinetic left ventricular aneurysm.

Abstract 14632: Effect of Obesity on Myocardial Strain Determined by Speckle Tracking Imaging

Circulation ◽  
2015 ◽  
Vol 132 (suppl_3) ◽  
Author(s):  
Meihua Zhu ◽  
Cole Streiff ◽  
Tao He ◽  
Muhammad Ashraf ◽  
Jiahui Zhang ◽  
...  
Keyword(s):  
Speckle Tracking ◽  
Myocardial Dysfunction ◽  
Global Longitudinal Strain ◽  
Myocardial Strain ◽  
Left Ventricular ◽  
Control Group ◽  
Speckle Tracking Imaging ◽  
Initial Weight ◽  
Newborn Mice ◽  
2D Speckle Tracking

Introduction: Obesity may affect cardiac function, which is hard to detect by traditional echocardiography in the early stages. Speckle tracking imaging (STI) is sensitive to subtle myocardial dysfunction. The aim of this study was to determine the influence of obesity on left ventricular (LV) myocardial function in diet-induced obesity (DIO) mice using two-dimensional (2D) speckle tracking echocardiography (STE). Hypothesis: 2D STE is useful to detect obesity-caused myocardial dysfunction. Methods: Twenty newborn mice were divided into two groups: a DIO group (high-fat diet) and a control group (regular-fat diet). 2D image loops were acquired at the end of each month for 6 months. Global longitudinal strain (GLS) and global circumferential strain (GCS) were analyzed at feeding periods over 3 months and 6 months, and compared between the two groups. Results: The control group gained 64% of its initial weight, while the DIO group gained 82% of its initial weight at the 3 month feeding period; and the two groups gained 88% (control) and 125% (DIO) respectively at 6 months. STE analysis revealed an insignificant decrease in strain values in the DIO mice after 3 months; however, after 6 months, the DIO group demonstrated a significant decrease in strain values (P<0.05) despite normal ejection fractions in both groups. Conclusions: 2D STE is highly feasible to detect the myocardial dysfunction caused by obesity in earlier stage. These strain values appear to be related to the severity of obesity.

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