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[Contralateral asynergy after myocardial infarct]
P Widimský1, P Gregor, V Cervenka
1II. interní klinika 3. lékarské fakulty Univerzity Karlovy, Praha.
Insights
Contralateral asynergy, a condition affecting another coronary vessel post-myocardial infarction, develops in about 9% of patients. This often occurs asymptomatically, indicating broader coronary circulation issues.
Area of Science:
- Cardiology
- Echocardiography
- Coronary Artery Disease
Background:
- Myocardial infarction (MI) can lead to long-term complications.
- Assessing post-MI cardiac function is crucial for patient management.
- Contralateral asynergy, affecting a different coronary artery territory, is a potential complication.
Purpose of the Study:
- To determine the incidence of contralateral asynergy after myocardial infarction.
- To identify clinical symptoms associated with contralateral asynergy development.
- To understand the implications of contralateral asynergy in coronary circulation.
Main Methods:
- Longitudinal echocardiographic follow-up of 208 patients post-myocardial infarction over 1-5 years.
- Assessment for the development of contralateral asynergy.
- Correlation of asynergy findings with clinical symptoms and coronary artery status.
Main Results:
- Contralateral asynergy was identified in 19 out of 208 patients (9.1%) during follow-up.
- The development of contralateral asynergy was asymptomatic in 12 patients.
- Significant stenosis or occlusion of the supplying coronary artery was noted in 18 patients with contralateral asynergy.
Conclusions:
- Contralateral asynergy develops in approximately 9% of patients following myocardial infarction.
- The onset of contralateral asynergy is typically asymptomatic.
- Echocardiographic detection of contralateral asynergy suggests multifocal coronary artery disease.
Abstract:
The purpose of the work was to assess whether during several years of echocardiographic follow-up of patients after myocardial infarction later contralateral asynergy develops (i.e. asynergy of another coronary vessel than that which supplies the area of the infarction) and what are the clinical symptoms associated with its development. In a group of 208 patients followed-up for 1-5 years contralateral asynergy was found in 19 patients (i.e. 9.1%). In 12 patients the development of contralateral asynergy was asymptomatic, in 18 patients significant stenosis or occlusion of the coronary artery which supplied the area of the contralateral asynergy was present. It can thus be concluded from the results that contralateral asynergy develops after myocardial infarction in cca 9% patients and usually its development is asymptomatic. The finding of contralateral asynergy on echocardiographic examination indicates multiple affection of the coronary circulation.