We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Paradoxical Atrial Undersensing: Noise Rate Reversion or Amplifier Ringing?
- Authors
VAN GELDER, BERRY M.; VAN DEN BROEK, WALDY; BRACKE, FRANK A.; MEIJER, ALBERT
- Abstract
Atrial tachy-arrhythmias may give rise to mode switching or noise rate reversion in dual-chamber pacemakers. In case of high amplitude of the atrial electrogram during tachycardia, a paradoxical behavior of atrial sensitivity programming can be observed. Two patients with implanted dual-chamber pacemakers showed intermittent and complete loss of atrial sensing during atrial tachycardia during device programming to a higher atrial sensitivity setting. This phenomenon is caused by amplifier ringing and can be considered as a state of amplifier saturation, which disables atrial sensing in spite of the high amplitude of the atrial signal. In patients with high amplitude of the atrial electrogram during atrial tachycardia, a paradoxical behavior of sensitivity programming resulting in atrial undersensing can be observed.
- Subjects
CARDIAC pacemakers; CARDIAC patients; TACHYCARDIA; ATRIAL arrhythmias; MEDICAL equipment; HEART diseases
- Publication
Journal of Cardiovascular Electrophysiology, 2006, Vol 17, Issue 12, p1371
- ISSN
1045-3873
- Publication type
Article
- DOI
10.1111/j.1540-8167.2006.00597.x