On (b)(6) 2020, an amplatzer duct occluder ii (adoii) was selected for implant first.However, the adoii did not fit well in the patient's defect, although there was no problem with the adoii itself.A 5/4mm amplatzer duct occluder (ado) was selected next, using a 180/60 5f amplatzer torqvue delivery system.However, the ado deformed and got stuck within the sheath; the ado was not able to be deployed from the delivery system.The delivery system was replaced with another one, but still the ado could not be deployed.The ado was replaced with another ado, and the procedure was completed with no consequence to the patient.
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