Document Detail

Interference with cardiac pacemaker function.
MedLine Citation:
PMID:  1070234     Owner:  NLM     Status:  MEDLINE    
A survey is given of the factors affecting cardiac pacemaker function. Whereas it was earlier considered that external interference was a frequent cause of a pacemaker failure, more recent studies indicate that this is of minor importance. It would appear that failure of pacemaker function due to changes in the QRS-complex, i.e. voltage change, intraventricular conduction defects and frequency changes, intraventricular conduction defects and frequency changes, are more important. A lesser known cause of failure in demand function is the inhibition which arises from skeletal muscle postentials. This appears to be a major problem in some types of pacemaker. Manufacturing defects are unavoidable, and it can still be assumed that electronic component defects may develop in 1 of 1000 pulse generators. Cases with the problem of early run-away pacemaker are still being reported and two such cases are discussed. In one of the patients the run-away phenomenon was intermittent, and was accompanied by a variation in run-away frequency. This possibility should thus always be taken into consideration in a pacemaker patient presenting with snycope. In a patient with a QRS-inhibited pacemaker a double stimulation phenomanen has been observed.
O J Ohm
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Acta medica Scandinavica. Supplementum     Volume:  596     ISSN:  0365-463X     ISO Abbreviation:  Acta Med. Scand. Suppl.     Publication Date:  1976  
Date Detail:
Created Date:  1977-02-24     Completed Date:  1977-02-24     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0370331     Medline TA:  Acta Med Scand Suppl     Country:  SWEDEN    
Other Details:
Languages:  eng     Pagination:  87-95     Citation Subset:  IM    
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MeSH Terms
Electrodes, Implanted
Electromagnetic Phenomena*
Heart Conduction System / physiopathology
Pacemaker, Artificial* / instrumentation

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

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