Document Detail

Importance of maintained atrio-ventricular synchrony in patients with pacemakers.
MedLine Citation:
PMID:  7821326     Owner:  NLM     Status:  MEDLINE    
The effect of atrial contraction on cardiac function is reviewed in patients with dual chamber and rate-responsive ventricular pacemakers. The question posed was is there any haemodynamic, clinical or prognostic advantage of AV synchrony in dual chamber pacemakers in comparison to rate-responsive ventricular pacemakers? Optimal AV delay in dual chamber pacing favours cardiac performance at rest, while during exercise the increase in heart rate rather than AV synchrony influences cardiac performance and working capacity. However, there is little information on the benefit of maintained AV synchrony in patients' daily activities. Patients with pacemakers which maintain AV synchrony seem to have less morbidity and mortality than patients with ventricular stimulation alone, and there are comparable rates of complication in carriers of single and dual chamber pacemakers, the former showing problems with the pacemaker syndrome and the latter with atrial sensing and pacemaker-induced tachycardias. The disadvantage of dual chamber pacemakers are higher costs and time-consuming controls.
J Frielingsdorf; A E Gerber; O M Hess
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.; Review    
Journal Detail:
Title:  European heart journal     Volume:  15     ISSN:  0195-668X     ISO Abbreviation:  Eur. Heart J.     Publication Date:  1994 Oct 
Date Detail:
Created Date:  1995-02-10     Completed Date:  1995-02-10     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  8006263     Medline TA:  Eur Heart J     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  1431-40     Citation Subset:  IM    
Cardiology Division, University Hospital, Zürich, Switzerland.
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MeSH Terms
Activities of Daily Living
Arrhythmias, Cardiac / therapy*
Cardiac Pacing, Artificial / methods*
Costs and Cost Analysis
Equipment Design
Exercise Tolerance / physiology
Hemodynamics / physiology*
Pacemaker, Artificial* / economics
Quality of Life

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

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