As reported in an article (titled - assessment of right atrial and right ventricular size in children after percutaneous closure of secundum atrial septal defect with amplatzer septal occluder), forty-two (42) children were treated with percutaneous closure of asd ii ranging from 11mm to 30 mm, in a study.It was reported that in one patient, the device was unstable and required repositioning.Another patient developed symptomatic atrial fibrillation 3 weeks after the procedure.Additional information was requested but has not been obtained.
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