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[The pathogenesis of heart rupture in myocardial infarct]
Insights
Cardiorrhexis in myocardial infarction (MI) patients results from a maladaptation syndrome. High ST segment elevation on ECG and arterial hypoxemia indicate a high risk of cardiorrhexis.
Area of Science:
- Cardiology
- Pathophysiology
- Biochemistry
Background:
- Myocardial infarction (MI) is a leading cause of mortality.
- Cardiorrhexis, a rare but fatal complication of MI, requires better understanding of its pathogenesis.
- Identifying predictive markers for cardiorrhexis is crucial for patient management.
Purpose of the Study:
- To investigate the pathogenetic mechanisms of cardiorrhexis in patients with anterior transmural MI.
- To identify biochemical and physiological indicators associated with cardiorrhexis development.
- To propose a pathogenetic model for cardiorrhexis in MI.
Main Methods:
- Analysis of 166 patients with primary anterior transmural MI.
- Biochemical analysis of blood components, including stress reaction markers, lipid peroxidation products, and adaptogens.
- Electrocardiogram (ECG) monitoring for ST segment elevation.
- Assessment of arterial blood gases for hypoxemia.
Main Results:
- MI patients with cardiorrhexis exhibited elevated stress reaction components and lipid peroxidation products.
- A decrease in adaptogen content was observed in patients with cardiorrhexis.
- High ST segment elevation on ECG and pronounced arterial hypoxemia were significant indicators of cardiorrhexis risk.
Conclusions:
- Cardiorrhexis in MI pathogenesis is linked to a maladaptation syndrome due to overwhelmed compensatory mechanisms.
- Biochemical and physiological markers, specifically ST segment elevation and hypoxemia, can predict cardiorrhexis risk.
- A proposed pathogenetic scheme clarifies the development of cardiorrhexis in MI patients.
Abstract:
Examination of 166 patients with primary transmural myocardial infarction (MI) of the anterior site has shown that the blood of MI patients (n = 34) complicated by cardiorrhexis manifests the maximal increase of the stress reaction components, lipid peroxidation products and an appreciable lowering of the content of adaptogens. It is emphasized that the development of the maladaptation syndrome underlies the pathogenesis of cardiorrhexis during MI as the result of the failure of the compensatory-adaptive potentialities of the body in response to the excessive stress reaction. It has been discovered that the high rise of the ST segment on the ECG and pronounced arterial hypoxemia are informative indicators mirroring the high probability of cardiorrhexis occurrence in MI patients. A scheme of cardiorrhexis pathogenesis in MI patients is offered.