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Left ventricular thrombus and myocardial infarction
Insights
Left ventricular thrombus (LVT) is more common in anterior myocardial infarction and with impaired left ventricular function. Early anticoagulant therapy may benefit these high-risk patients.
Area of Science:
- Cardiology
- Diagnostic Imaging
Background:
- Left ventricular thrombus (LVT) is a potential complication of myocardial infarction (MI).
- Identifying patients at higher risk for LVT is crucial for timely intervention.
Purpose of the Study:
- To investigate the relationship between echocardiographic findings of LVT and the clinical course of myocardial infarction.
- To identify predictors of LVT in patients with MI.
Main Methods:
- Two-Dimensional Echocardiography (TDE) was used to detect LVT in 143 patients with transmural MI (82 anterior, 61 inferior).
- Patients were followed for three months.
- Clinical data, including ventricular arrhythmias and stress test performance, were analyzed.
Main Results:
- LVT incidence was significantly higher in anterior MI compared to inferior MI (p < 0.05).
- LVT occurrence was strongly associated with left ventricular akinesis or dyskinesis detected by TDE (p < 0.01).
- No significant relationship was found between LVT and severe ventricular arrhythmias or abnormal stress test results.
Conclusions:
- Anterior MI site, elevated CPK and CPK-MB levels, and severe left ventricular kinetic abnormalities are predictors of LVT.
- These findings help identify a subset of MI patients who may benefit from early anticoagulant therapy.
Abstract:
The aim of our study was to determine whether a relationship existed between echocardiographic evidence of left ventricular thrombus (LVT) and clinical course of myocardial infarction. We followed 143 patients who had had typical myocardial transmural infarction (82 with "anterior") and 61 with "inferior" myocardial infarction) over a three month period. Incidence of LVT, detected by Two-Dimensional Echocardiography (TDE) was significantly greater in subjects affected by "anterior" myocardial infarction (p less than 0.05). Furthermore, the occurrence of LVT was more frequent in the presence of left ventricular a-, dys-kinesis detected by TDE (p less than 0.01). No significant relationship was demonstrated either with the occurrence of severe ventricular arrhythmias (Lown 3-4-5) or with an abnormal stressing test performance. Thus certain clinical and laboratory features such as anterior site of infarction, higher serum level of CPK and CPK-MB and severe alterations of left ventricular kinesis proved to be useful in identifying a subset of patients most likely to have LVT who may benefit from early anticoagulant therapy.