Is this pacemaker working properly? Prolongation of the atrial escape interval following activation of the ventricular safety pacing algorithm in a dual-chamber implantable cardioverter defibrillator with atrial-based, lower rate timing.
With the introduction of various new pacing features and algorithms, 12-lead electrocardiogram analysis of paced rhythms can be a challenging undertaking. An incorrect interpretation may lead to an inappropriate medical decision in the care of such patients. The authors present an interesting paced 12-lead electrocardiogram that posed a diagnostic challenge.
Johri
Amer M
AM
Arrhythmia Service, Kingston General Hospital, Queen's University, Kingston, Canada.
Baranchuk
Adrian
A
Simpson
Christopher S
CS
Redfearn
Damian P
DP
Abdollah
Hoshiar
H
D000368:Aged; D000465:Algorithms; D016275:Atrial Function / Q000502:physiology; D002304:Cardiac Pacing, Artificial / Q000379:methods*; D017147:Defibrillators, Implantable; D004554:Electric Countershock / Q000295:instrumentation*; D004562:Electrocardiography; D004867:Equipment Design; D005260:Female; D005500:Follow-Up Studies; D006325:Heart Atria / Q000503:physiopathology*; D006333:Heart Failure / Q000150:complications* / Q000503:physiopathology / Q000628:therapy; D006339:Heart Rate; D006801:Humans; D010138:Pacemaker, Artificial; D017180:Tachycardia, Ventricular / Q000150:complications / Q000503:physiopathology / Q000628:therapy*