Document Detail

The electromechanical effects of pacing at different sites within the right atrium.
MedLine Citation:
PMID:  12408264     Owner:  NLM     Status:  MEDLINE    
AIMS: To compare high right atrium (HRA) with right atrial appendage (RAA) pacing with respect to atrial electromechanical function. METHODS: Eleven patients undergoing elective electrophysiological studies were studied in order directly to compare atrial conduction acutely associated with HRA and RAA pacing. Twenty-five patients with chronically implanted, active fixation leads in the HRA were compared with an age and sex matched group of 25 patients with chronically implanted, passive fixation leads in the RAA. For both studies recordings were taken in sinus rhythm then repeated when paced. Measured time intervals were intra- and interatrial activation times. P wave duration and time to onset of atrial systolic blood flow. RESULTS: Right atrial pacing, when compared with sinus rhythm, significantly prolongs the interatrial activation time, the P wave duration and the time to onset of right and left atrial blood flow irrespective of site paced. Comparing the RAA group with the HRA group, there were no statistical differences for any of the measured parameters. CONCLUSION: High right atrial free wall or the right atrial appendage pacing, when compared with sinus rhythm, is significantly detrimental to atrial electromechanical function. There is, however, no demonstrable difference between the two sites.
M R D Belham; J Gill; M D Gammage; P M Holt
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Europace : European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology     Volume:  4     ISSN:  1099-5129     ISO Abbreviation:  Europace     Publication Date:  2002 Oct 
Date Detail:
Created Date:  2002-10-31     Completed Date:  2003-02-11     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  100883649     Medline TA:  Europace     Country:  England    
Other Details:
Languages:  eng     Pagination:  431-7     Citation Subset:  IM    
Department of Cardiology, Royal Shrewsbury Hospital, Shropshire, UK.
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MeSH Terms
Atrial Function, Right
Cardiac Pacing, Artificial / methods*
Electrophysiologic Techniques, Cardiac
Heart Atria
Heart Conduction System / physiology
Middle Aged

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