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Pericardial Effusion as a Consequence of Acute Myocardial Infarction
1Cardiocenter, Department of Medicine II, University Hospital Kralovske Vinohrady, Srobárova 50, 100 34 Praha 10, Czech Republic.
Abstract:
Pericarditis is a common complication of acute myocardial infarction (MI). Its incidence during the first few days after acute MI is 24%-43% when echocardiographic criteria are used, whereas the frequency of clinical pericarditis is much less (from 5% for all acute MIs to 21% for anterior Q wave MIs). Clinical, electrocardiographic findings are discussed. Effusions are mostly small, and the resolution is frequently slow, lasting 1-18 months. Tamponade is extremely rare in the absence of cardiac rupture. Q wave MIs (especially anterior) are more frequently accompanied by pericardial effusion. The prognostic significance of echocardiographically proved pericarditis is questionable.
Insights
Pericarditis frequently complicates acute myocardial infarction (MI), with echocardiography detecting it in up to 43% of cases. Clinical diagnosis is less common, and pericardial effusion rarely leads to serious complications.
Area of Science:
- Cardiology
- Internal Medicine
Background:
- Pericarditis is a known complication following acute myocardial infarction (MI).
- Echocardiographic detection of pericarditis post-MI is more frequent than clinical diagnosis.
Purpose of the Study:
- To review the incidence, clinical presentation, and prognostic significance of pericarditis after acute myocardial infarction.
Main Methods:
- Review of clinical and electrocardiographic findings.
- Analysis of echocardiographic data regarding pericardial effusion.
- Discussion of incidence rates based on diagnostic criteria.
Main Results:
- Echocardiographically detected pericarditis occurs in 24%-43% of acute MI cases within days.
- Clinically diagnosed pericarditis is less frequent, ranging from 5% to 21% for specific MI types.
- Pericardial effusions are typically small, resolve slowly (1-18 months), and tamponade is rare without cardiac rupture.
- Anterior Q wave MIs are more often associated with pericardial effusion.
Conclusions:
- Pericarditis is a common echocardiographic finding after acute MI.
- The prognostic impact of echocardiographically identified pericarditis remains uncertain.
- Clinical pericarditis is less prevalent, and serious complications like tamponade are infrequent.