Spontaneously appearing microbubbles associated with prosthetic cardiac valves detected by transesophageal echocardiography.


During transesophageal echocardiographic studies in patients with prosthetic cardiac valves, we have noticed the presence of bright, highly mobile echoes (termed microbubbles because of their similarity to saline contrast bubbles) that move rapidly away from the valve. These echoes are distinct from spontaneous echo contrast. The purpose of this study was… (More)


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