Pseudo SVT in the pacemaker patient.
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.
Modi
Simon
S
Liverpool Heart and Chest Hospital, Liverpool, United Kingdom. simodi@doctors.org.uk
Barker
Diane
D
Cooper
Robert
R
Patwala
Ash
A
Hall
Mark
M
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*