title: Junctional ectopic tachycardia in late period after early postoperative complete atrioventricular block: Messenger of return to normal sinus rhythm? : Explanation with four case series.
abstract: Junctional ectopic tachycardia(JET) is a rare childhood arrhythmia originating from the area adjacent to the atrioventricular(AV) node. It often occurs after surgical procedures like repair of Tetralogy of Fallot, atrioventricular septal defect and ventricular septal defect, which are all performed in that area. While AV block (AVB) can occur after JET, it is very rare for late JET occurring after early postoperative AVB to be followed by normal sinus rhythm (NSR). There is no information in the literature related to the pathophysiology of this phenomenon. In this text, we present 4 patients who developed complete AV block(CAVB) in the early postoperative period (within the first 24h) after JET in late period (>72h) and returned to NSR with first-degree AV block and then NSR during follow-up. Based on these cases, we hypothesize that there is a link between late JET after early postoperative CAVB and return to NSR.
authors.affiliation: Department of Pediatric Cardiology/Electrophysiology, İstanbul Mehmet Akif Ersoy, Thoracic and Cardiovascular Surgery Center and Research Hospital, Istanbul, Turkey. Electronic address: isaozyilmaz@gmail.com.
authors.forename: Isa
authors.initials: I
authors.lastname: Ozyilmaz
authors.affiliation: Department of Pediatric Cardiology/Electrophysiology, İstanbul Mehmet Akif Ersoy, Thoracic and Cardiovascular Surgery Center and Research Hospital, Istanbul, Turkey.
authors.forename: Yakup
authors.initials: Y
authors.lastname: Ergul
authors.affiliation: Department of Cardiology, İstanbul Mehmet Akif Ersoy, Thoracic and Cardiovascular Surgery Center and Research Hospital, Istanbul, Turkey.
authors.forename: Sinem
authors.initials: S
authors.lastname: Ozyilmaz
authors.affiliation: Department of Pediatric Cardiology, İstanbul Mehmet Akif Ersoy, Thoracic and Cardiovascular Surgery Center and Research Hospital, Istanbul, Turkey.
authors.forename: Alper
authors.initials: A
authors.lastname: Guzeltas
mesh_terms: D054537:Atrioventricular Block / Q000175:diagnosis* / Q000209:etiology* / Q000628:therapy; D006348:Cardiac Surgical Procedures / Q000009:adverse effects*; D002648:Child; D003937:Diagnosis, Differential; D004562:Electrocardiography / Q000379:methods; D005260:Female; D006330:Heart Defects, Congenital / Q000150:complications / Q000601:surgery*; D006801:Humans; D007223:Infant; D008297:Male; D013613:Tachycardia, Ectopic Junctional / Q000175:diagnosis* / Q000209:etiology* / Q000628:therapy
keywords: Early period; Junctional ectopic tachycardia; Late period; Normal sinus rhythm; Postoperative complete atrioventricular block