title: HIS bundle electrocardiogram in children with secundum atrial septal defects and patent ductus arteriosus.
mesh_terms: D002036:Bundle of His / Q000503:physiopathology*; D002648:Child; D002675:Child, Preschool; D004374:Ductus Arteriosus, Patent / Q000503:physiopathology*; D004562:Electrocardiography; D005260:Female; D006329:Heart Conduction System / Q000503:physiopathology*; D006344:Heart Septal Defects, Atrial / Q000503:physiopathology*; D006801:Humans; D008297:Male