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Acute pericarditis is an inflammation of the pericardium that is most commonly caused by infection or myocardial infarction, or occurs following cardiac surgery. The condition typically presents with fever, pleuritic chest pain, and a pericardial friction rub heard on auscultation. The diagnosis is established based on clinical findings, although diffuse ST segment elevations on ECG and imaging may support the diagnosis. Acute pericarditis is usually self-limiting within 2–6 weeks and is therefore managed symptomatically. Constrictive pericarditis occurs as a complication of acute pericarditis and is characterized by thickening and rigidity of the pericardium, resulting in both backward and forward failure. Accordingly, patients present with fatigue, jugular vein distention, peripheral edema, and a characteristic pericardial knock on auscultation, caused by a sudden stop in ventricular diastolic filling. Diagnostic imaging shows typical pericardial thickening on chest x-ray and reduced blood flow on echocardiography. Management consists of treatment of heart failure (e.g., diuretics) and pericardiectomy.




Tuberculosis is the most common cause of constrictive pericarditis in developing countries.


Clinical features

Acute pericarditis

Constrictive pericarditis



Acute pericarditis

The diagnosis is based primarily on a history of pleuritic chest pain and a friction rub heard on auscultation. It is supported by the following findings:

Constrictive pericarditis



Acute pericarditis

Acute pericarditis is often self-limiting and resolves within approx. 2–6 weeks.

Constrictive pericarditis


Acute management checklist



We list the most important complications. The selection is not exhaustive.

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last updated 04/02/2020
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