Incomplete Ligation of the Left Atrial Appendage: Diagnosis by Transesophageal Echocardiography

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Abstract
Ligation of the left atrial appendage during mitral valve surgery is routinely performed to decrease the incidence of future thromboembolic events. Complete obliteration of the appendage cavity is the surgical aim, but this has been difficult to verify by objective means. In this paper, we report 2 cases of incomplete left atrial appendage ligation detected incidentally by transesophageal echocardiography and speculate on the clinical relevance of this finding.

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