Document Detail

Changing experience with dual chamber (DDD) pacemakers.
MedLine Citation:
PMID:  6470336     Owner:  NLM     Status:  MEDLINE    
Dual chamber (DDD) or "universal" pacemakers have had a significant impact on the advancement of artificial pacemakers by providing a more physiologic approach to cardiac pacing. However, with the early generation of DDD pacemakers (pacemakers that sense and pace in both the atrium and the ventricle), a significant number of patients experienced pacemaker-mediated tachycardia because intact ventriculoatrial conduction was sensed in the atrium and a reentrant tachycardia was induced. Newer generation DDD pacemakers have provided longer atrial refractory periods, which should correct this problem. In this study the first and second years of a 2 year experience with DDD pacemakers were compared to determine if the newer generation devices have allowed maintenance of pacing in the DDD mode as opposed to reprogramming to some alternate mode because of pacemaker-mediated tachycardia or other pacing problems. The results showed a significant decrease in pacemaker-mediated tachycardia during the second year and continuation of pacing in the DDD mode in a higher percent of patients. This improvement is attributed to improvement in the pulse generator as well as better patient selection.
D L Hayes; D R Holmes; R E Vlietstra; M J Osborn
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of the American College of Cardiology     Volume:  4     ISSN:  0735-1097     ISO Abbreviation:  J. Am. Coll. Cardiol.     Publication Date:  1984 Sep 
Date Detail:
Created Date:  1984-09-26     Completed Date:  1984-09-26     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  8301365     Medline TA:  J Am Coll Cardiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  556-9     Citation Subset:  IM    
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MeSH Terms
Equipment Design
Equipment Failure
Follow-Up Studies
Heart Block / therapy*
Middle Aged
Pacemaker, Artificial* / adverse effects
Tachycardia / etiology

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