It was reported the physician selected a 30mm gore cardioform septal occluder to close a 13mm x 17mm atrial septal defect with a deficient anterior rim.The device was placed with confirmed capture of all rims, but a trivial anterior residual shunt was seen on color flow.The physician locked the device and the shunt appeared smaller.The device appeared stable and the retrieval cord was removed, following which, the occluder prolapsed into the right atrium and under the tricuspid valve.Valve function was not affected and the patient remained stable; however, the device was not amenable to percutaneous retrieval.The occluder was then surgically removed and the defect was closed with a patch.The patient was doing well following the procedure.
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