title: Paroxysmal supraventricular tachycardia with persistent ventriculoatrial block.
abstract: We report the case of a 64-year-old patient with paroxysmal supraventricular tachycardia and persistent VA block. Induction and maintenance of tachycardia occurred without apparent activation of the atria. Diagnostic characteristics were most compatible with AV nodal reentrant tachycardia (AVNRT). Automatic junctional tachycardia and orthodromic nodoventricular or nodofascicular reentry tachycardia were considered in the differential diagnosis. Upper common pathway block during AVNRT may be explained by either intra-atrial conduction block or purely intranodal confined AVNRT. The arrhythmia was cured by a typical posteroseptal ablation approach guided by slow pathway potentials.
authors.affiliation: Department of Cardiology, Landeskliniken Salzburg, Salzburg, Austria. B.Strohmer@lks.at
authors.forename: Bernhard
authors.initials: B
authors.lastname: Strohmer
authors.forename: Christiana
authors.initials: C
authors.lastname: Schernthaner
authors.forename: Maximilian
authors.initials: M
authors.lastname: Pichler
mesh_terms: D002304:Cardiac Pacing, Artificial; D017115:Catheter Ablation; D003937:Diagnosis, Differential; D015716:Electrocardiography, Ambulatory; D022062:Electrophysiologic Techniques, Cardiac; D005260:Female; D006327:Heart Block / Q000175:diagnosis* / Q000503:physiopathology / Q000628:therapy; D006329:Heart Conduction System / Q000503:physiopathology / Q000601:surgery; D006801:Humans; D008875:Middle Aged; D012008:Recurrence; D013614:Tachycardia, Paroxysmal / Q000175:diagnosis* / Q000503:physiopathology / Q000628:therapy; D013617:Tachycardia, Supraventricular / Q000175:diagnosis* / Q000503:physiopathology / Q000628:therapy