Echocardiography in pericardial effusion.

Echocardiography has become established as the procedure of choice for the detection, confirmation and serial follow-up of patients with pericardial effusion. In this article the technic and pitfalls of recording, and the criteria and their sensitivity for the diagnosis of pericardial effusion are reviewed. In addition, echographic findings in special instances, such as accumulation of pericardial effusion behind the left atrium, the swinging heart syndrome and cardiac tamponade, are discussed.