Pacemaker-mediated tachycardia with varying cycle length: what is the mechanism?
As new algorithms are being developed to promote intrinsic atrioventricular conduction in preventing the deleterious effects of right ventricular pacing, more complex rhythm strips can be encountered. In our patient with a dual-chamber implantable cardioverter-defibrillator, such an algorithm resulted in a pacemaker-mediated tachycardia with several changes in cycle length.
Verrijcken
Anton
A
Department of Cardiology, University Hospitals Leuven, Herestraat 49, 3000 Leuven, Belgium.
Huybrechts
Wim
W
Willems
Rik
R
D002304:Cardiac Pacing, Artificial / Q000009:adverse effects*; D005260:Female; D006801:Humans; D008875:Middle Aged; D010138:Pacemaker, Artificial / Q000009:adverse effects*; D017180:Tachycardia, Ventricular / Q000175:diagnosis / Q000209:etiology* / Q000517:prevention & control*