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[Myocardial pathomorphology in exotoxic shock]
Insights
This study examined heart tissue from patients who died from acute poisoning. It found general shock-related damage and specific changes linked to the type of toxin, impacting heart muscle cells.
Area of Science:
- Cardiovascular Pathology
- Toxicology
- Electron Microscopy
Context:
- Acute poisoning is a significant cause of mortality.
- Understanding the cardiac manifestations of poisoning is crucial for diagnosis and treatment.
- Previous studies have focused on systemic effects, with less detail on specific myocardial alterations.
Purpose:
- To investigate the morphological changes in the myocardium of patients who died from acute poisoning.
- To differentiate general shock-induced cardiac damage from toxin-specific myocardial lesions.
Summary:
- Morphological and electron microscopic analyses of hearts from 49 acute poisoning fatalities revealed common shock-related myocardial alterations.
- These include microcirculatory damage, blood flow issues, and interstitial edema, leading to cardiomyocyte metabolic dysfunction, dystrophy, and necrosis.
- Specific findings varied by toxin: acetic acid caused fatty degeneration, dichlorethane induced contractural lesions, and cardiotoxic agents resulted in sarcoplasmic edema with organelle disarray.
Impact:
- Provides detailed insights into the cardiac pathology associated with various acute poisoning types.
- Highlights the importance of considering specific myocardial changes in diagnosing and managing poisoning cases.
- Contributes to the understanding of shock-induced cardiovascular damage and its etiological variations.
Abstract:
Morphological, including electron microscopic, examinations of the hearts from 49 patients dying in the stage of shock after acute poisoning revealed general structural alterations in the myocardium typical of shock of any etiology as well as some specific features of the heart involvement related to the kinds of toxicity. The general alterations include damage of microcirculation vessels, rheological blood disorders, interstitial edema, leading to disorders in cardiomyocyte metabolism and development in some of them of dystrophic and necrotic lesions. In acetic acid poisoning, fatty degeneration of cardiomyocytes is more marked; dichlorethane poisoning is characterized by contractural lesions, and that with cardiotoxic substances by diffuse edema of sarcoplasm with "disconnected" organelles.