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[The pathophysiological basis of the destabilization of the clinical course in ischemic heart disease]
Insights
Unstable angina (UA) and myocardial infarction (MI) are distinct acute ischemic heart diseases (IHD). Platelet activation is key in UA, but MI risk rises with impaired anticoagulation and fibrinolysis.
Area of Science:
- Cardiovascular Medicine
- Hematology
- Pathophysiology
Context:
- Acute coronary events, including unstable angina (UA) and myocardial infarction (MI), are critical manifestations of ischemic heart disease (IHD).
- Understanding the distinct roles of the coagulative blood system in initiating these events is crucial for effective management.
- Previous research has explored various etiological factors, but a clear differentiation based on coagulation dynamics is needed.
Purpose:
- To investigate the specific role of the coagulative blood system in the initiation of acute coronary events.
- To differentiate the pathophysiological mechanisms underlying unstable angina and myocardial infarction.
- To identify key hemostatic markers for early diagnosis and treatment stratification.
Summary:
- Unstable angina (UA) and myocardial infarction (MI) represent distinct forms of acute ischemic heart disease (IHD) with unique pathophysiological features.
- Increased platelet functional activity is a common characteristic of UA, potentially serving as a primary pathogenic factor rather than a precursor to MI.
- A high risk of MI development is associated with platelet activation combined with impaired anticoagulative and fibrinolytic blood systems, indicating a disrupted hemostatic balance.
Impact:
- These findings underscore the importance of differentiating UA and MI at initial diagnosis based on coagulative potential.
- Tailoring treatment strategies according to the specific coagulative profile of patients can optimize outcomes.
- Highlights the need for comprehensive assessment of blood coagulation, anticoagulation, and fibrinolysis in acute cardiac events.
Abstract:
The role of the coagulative blood system in initiation of acute coronary events was investigated on patients with different clinical forms of ischemic heart disease (IHD). The obtained results indicate that unstable angina (UA) and myocardial infarction (MI) are two independent forms of the acute IHD with distinct qualitative peculiarities. The most common feature of UA was an increase in the functional activity of platelets both in cases proceeded in MI and in uncomplicated cases. It means that these changes may be treated as the main pathogenic factor if UA but not as a mechanism of its transformation to MI. But high degree of the risk of MI development appears if these changes are combined with preceding significant disturbances in the haemostatic balance as a result of inhibition of the activity of anticoagulative and fibrinolytic blood systems. These data show that differentiation of the diagnosis between UA and MI in its initial stage and the choice of the treatment principles should be based on the careful investigation of the coagulative potential of blood and of its most important components.