title: Pseudo SVT in the pacemaker patient.
abstract: This is an interesting report of a supraventricular tachycardia in a paced patient with intermittent atrioventricular nodal block. Only electrophysiology testing revealed the correct diagnosis. Images explain how pacemaker timing cycles and refractory periods can confuse an otherwise straightforward diagnosis.
authors.affiliation: Liverpool Heart and Chest Hospital, Liverpool, United Kingdom. simodi@doctors.org.uk
authors.forename: Simon
authors.initials: S
authors.lastname: Modi
authors.forename: Diane
authors.initials: D
authors.lastname: Barker
authors.forename: Robert
authors.initials: R
authors.lastname: Cooper
authors.forename: Ash
authors.initials: A
authors.lastname: Patwala
authors.forename: Mark
authors.initials: M
authors.lastname: Hall
mesh_terms: D000328:Adult; D054537:Atrioventricular Block / Q000175:diagnosis* / Q000517:prevention & control*; D003937:Diagnosis, Differential; D022062:Electrophysiologic Techniques, Cardiac / Q000379:methods*; D005260:Female; D006801:Humans; D010138:Pacemaker, Artificial; D013617:Tachycardia, Supraventricular / Q000175:diagnosis* / Q000517:prevention & control*