Document Detail

Reversible end-of-life indicator leading to erroneous pacemaker replacement-pitfalls of telemetry.
MedLine Citation:
PMID:  6209633     Owner:  NLM     Status:  MEDLINE    
In several modern pacemakers, end-of-life (EOL) is indicated by a single-step rate drop, which is initiated by a voltage-sensitive electronic switch. This switch may also be activated by other causes, such as very short voltage drops, low temperatures, and electrocautery. We report a case in which a Cordis 233 F Sequicor II pulse generator was operating at 51.6 bpm in VOO mode at the time of implantation. As telemetry seemed to indicate that back-up pacing (the EOL indicator in this model) was "off," it was erroneously assumed that the pacemaker was not working properly. The unit was replaced by another impulse generator. At laboratory testing, the pacemaker was within specifications, when back-up pacing was separately programmed off. In conclusion, physicians should be aware of the new phenomenon of reversible EOL indicators, and that they may not rely on telemetry in this respect. Future pacemakers should incorporate a telemetry message which prevents similar misunderstandings.
W Scheibelhofer; J Kaliman; H Mayr; H Müller; A Laczkovics; F Kaindl
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Publication Detail:
Type:  Case Reports; Journal Article    
Journal Detail:
Title:  Pacing and clinical electrophysiology : PACE     Volume:  7     ISSN:  0147-8389     ISO Abbreviation:  Pacing Clin Electrophysiol     Publication Date:  1984 Nov 
Date Detail:
Created Date:  1985-01-03     Completed Date:  1985-01-03     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  7803944     Medline TA:  Pacing Clin Electrophysiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  952-4     Citation Subset:  IM    
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MeSH Terms
Equipment Design
Pacemaker, Artificial*
Sick Sinus Syndrome / therapy
Telemetry / adverse effects*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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