Acute pericarditis: ECG and echocardiographic findings
THE CONTEXT
The diagnosis of acute pericarditis can often be made from clinical features and the electrocardiogram (ECG). Echocardiography assesses for an associated effusion.
ECG findings
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ST segments: ST elevation has upward concavity over the affected area and may be widespread.
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PR interval: PR interval depression is a very specific indicator of acute pericarditis.
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Later changes: T-wave inversion may develop, particularly when there is a degree of myocarditis.
Echocardiography and follow-up
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Initial findings: Echocardiography may be normal or may reveal a pericardial effusion.
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Monitoring: Regular echocardiographic monitoring is recommended when an effusion is present.