Thrombotic layers and/or atrial thrombi were detected by transesophageal echocardiography as a usual finding after transcatheter closure of atrial septal defects with the ASDOS device. The size of the thrombotic structures regularly decreased within 6 months without any clinical signs of embolization.

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http://dx.doi.org/10.1016/s0002-9149(99)00296-9DOI Listing

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