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Figure 2 Precardioversion (left) and postcardioversion (right) images of the left atrial appendage (LAA) using TEE. After DC cardioversion, left atrial appendage function diminishes and spontaneous echocardiographic contrast intensifies. DC = direct current; LA = left atrium; LV = left ventricle; TEE = transesophageal echocardiography. (Reprinted with permission from the American College of Cardiology, 1994.)