Atrophic degeneration and loss of myocytes of residual left ventricular myocardium after Dor operation for ischemic cardiomyopathy associated with left ventricular remodeling

2003 ◽  
Vol 51 (11) ◽  
pp. 634-637 ◽  
Author(s):  
Kiyokazu Kokaji ◽  
Masahiko Okamoto ◽  
Kentaroh Hotoda
2021 ◽  
Vol 6 (1) ◽  
pp. 153-159
Author(s):  
I. M. Fushtey ◽  
◽  
E. V. Sid’ ◽  
V. О. Ivashchuk

The purpose of the study was to determine the peculiarity of left ventricular remodeling among patients with hypertension developing acute myocardial infarction. Material and methods. The results of the study are based on the data of a comprehensive examination of 477 patients with coronary artery disease: 280 patients with STEMI (ST-segment elevation myocardial infarction), 91 patients with NSTEMI (non ST-segment elevation myocardial infarction) and the control group consisted of 76 patients with exertional angina (II and III functional class for 38 people). The examination of patients was carried out in the period from 2015 to January 2018 on the basis of the Regional Medical Center for Cardiovascular Diseases of the Zaporozhye Regional Council. All patients (n=477) were comparable in age, social status and gender. The proportion of patients with hypertension was comparable between the groups and amounted to 255 (91.1%) patients with STEMI, 86 (94.5%) with NSTEMI, and 71 (93.4%) patients with stable coronary artery disease. Results and discussion. The development of left ventricular hypertrophy is a long-term process in hypertensive patients. At first, there is a change in the geometry of the left ventricle, since during systole the ventricle tends to take a spherical shape. Further, dilatation of cavities, hypertrophy and an increase in the mass of the left ventricular myocardium, replacement of the myocardium with fibrous tissue develop. Whereas in patients with acute myocardial infarction, due to acute myocardial ischemia, thickening of the myocardial wall is associated with interstitial edema occurs rather quickly. These important factors make it difficult to compare different studies and to reliably identify patients with true left ventricular hypertrophy. Therefore, left ventricular myocardium mass index should be determined as early as possible in patients with hypertension after the development of acute myocardial infarction, in order to interpret the obtained data. Сonclusion. Ischemic heart disease is often associated with essential hypertension, more than 90% of patients with acute myocardial infarction developed essential hypertension. It was determined that eccentric and concentric left ventricular hypertrophy prevailed among those examined on the first day of hospitalization and was due to the presence of hypertension


1997 ◽  
Vol 43 (6) ◽  
pp. 990-995 ◽  
Author(s):  
Vincent Ricchiuti ◽  
Jianyi Zhang ◽  
Fred S Apple

Abstract Cardiac troponin T (cTnT) and troponin I (cTnI) have been suggested as new, more specific markers of myocardial cellular damage. The objective of this study was to examine how the distributions of cTnI and cTnT were affected in postinfarction left ventricular remodeled (LVR) myocardium. At 2 months postinfarct in a porcine heart failure model, both Western blot and biochemical assay analyses were performed on left ventricular myocardium remote from the infarct zone in ligation animals (n = 8). Results were compared with data from the left ventricular myocardium from similar sized healthy (control) pigs (n = 7). Autoradiograms from Western blot analysis showed that the protein mass for cTnI and cTnT in LVR hearts decreased 80% (P <0.001) and 40% (P <0.02), respectively, when compared with nondiseased tissue. Similarly, the concentrations for cTnI and cTnT in LVR hearts decreased 42% (P <0.05) and 70% (P <0.001), respectively, compared with nondiseased normal tissue. The clinical assumption is that the appearance of cTnI and cTnT in the blood is proportional to chronic loss of cTnI and cTnT from injured myocardium associated with left ventricular remodeling.


2007 ◽  
Vol 6 (1) ◽  
pp. 129-138
Author(s):  
T. A. Kalitvyanskaya ◽  
Ye. V. Yusoubova ◽  
V. A. Kazakov ◽  
I. V. Soukhodolo ◽  
V. M. Shipoulin

The aim of the study was performing clinical-economic analysis of the assessment methods of morphologic-functional status of left ventricular myocardium in ischemic cardiomyopathy patients. The assessment of expenses of morphologic study methods of before operation and intra-operation diagnosis of myocardial dysfunction irreversibility stage was done. Method of minimizing ex-penses was chosen to analyze these two approaches. Comparative analysis of morphologic methods showed that the most economi-cally profitable is before operation method. The economic assessment was performed for optimization of morphologic studies in the work of cardiovascular surgery department of the Institute of Cardiology, TSC RAMS (Tomsk). The necessity of myocardial dys-function state analysis is due to the selection of optimal approach to surgical treatment of ischemic cardiomyopathy patients or re-vealing contraindications to it.


2016 ◽  
Vol 22 (9) ◽  
pp. S218
Author(s):  
Shota Yamana ◽  
Takayuki Tsuji ◽  
Hajime Nakaoka ◽  
Yasuhiro Kaetsu ◽  
Hiroaki Nakamura ◽  
...  

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