[Arrhythmia induction during atrial pacing with atrial floating electrodes].
Atrial pacing with floating electrodes primarily designed for single lead VDD systems has disadvantages attributable to the floatability of the electrodes. Body and breathing movements cause changes in the position of the atrial dipole that can lead to failure of atrial capture and sensing, and even alternation of the stimulated chamber. We report the induction of typical intranodal tachycardia episodes related to intermittent failure of atrial capture in a patient with an implanted single lead DDD pacing system. Such systems pose a substantial risk of potentially arrhythmogenic asynchronous pacing.
Izquierdo
Ricardo
R
Servicio de Cardiología, Hospital Xeral-Calde, Lugo, España.
Pelegrín
Juana
J
Sánchez
Antonio
A
Lacambra
Isaac
I
Carmona
Amalio
A
Rodrigo
Gonzalo
G
D000368:Aged; D000369:Aged, 80 and over; D001145:Arrhythmias, Cardiac / Q000209:etiology* / Q000628:therapy; D016280:Atrial Function, Right / Q000502:physiology; D002304:Cardiac Pacing, Artificial / Q000379:methods; D004562:Electrocardiography; D004566:Electrodes / Q000009:adverse effects*; D004567:Electrodes, Implanted; D022062:Electrophysiologic Techniques, Cardiac / Q000379:methods; D006801:Humans; D008297:Male; D010138:Pacemaker, Artificial / Q000009:adverse effects*