title: A case of congenital junctional ectopic tachycardia: diagnosis and successful radiofrequency catheter ablation in infancy.
abstract: It is difficult to make a definitive diagnosis of congenital junctional ectopic tachycardia (JET) in utero. We report a case in which congenial JET was suspected by fetal M-mode echocardiography. Fetal M-mode tracing of the atria and ventricle clearly showed a gradual acceleration of ventricular activity at the beginning of tachycardia, the warming-up sign of ectopic tachycardia, which was followed by simultaneous contractions of atrium and ventricle. This report also describes successful emergent radiofrequency catheter ablation of congenital JET in infancy with preservation of normal AV nodal conduction for this patient.
authors.affiliation: Department of Pediatrics, Seoul National University Children's Hospital, Seoul, South Korea. eunjbae@plaza.snu.ac.kr
authors.forename: Eun-Jung
authors.initials: EJ
authors.lastname: Bae
authors.forename: Soo-Jung
authors.initials: SJ
authors.lastname: Kang
authors.forename: Chung-Il
authors.initials: CI
authors.lastname: Noh
authors.forename: Jung-Yun
authors.initials: JY
authors.lastname: Choi
authors.forename: Yong-Soo
authors.initials: YS
authors.lastname: Yun
mesh_terms: D000328:Adult; D017115:Catheter Ablation; D003937:Diagnosis, Differential; D004452:Echocardiography; D004562:Electrocardiography; D005260:Female; D006801:Humans; D008297:Male; D011247:Pregnancy; D011296:Prenatal Diagnosis; D013613:Tachycardia, Ectopic Junctional / Q000151:congenital* / Q000000981:diagnostic imaging / Q000601:surgery