Document Detail

Pacemaker-induced change in prosthetic valvular sounds.
MedLine Citation:
PMID:  1261315     Owner:  NLM     Status:  MEDLINE    
Variable intensity and timing of valvular sounds were noted in two patients with permanent pacemakers and prosthetic valves. In the first patient, who had a mitral and a tricuspid prosthesis, valvular opening sounds became widely separated with a change from nodal to ventricular paced rhythm. In a second patient, who had a mitral prosthesis in sinus rhythm with first-degree atrioventricular block, a very quiet closing sound increased markedly in intensity with the onset of ventricular pacing. The mechanism for these changes is described using a technique which at brief intervals throughout the cardiac cycle permitted documentation of simultaneously recorded phonocardiogram, electrocardiogram, and pulse tracings with a visible image of the prosthesis. In the usual patient with a prosthetic valve auscultatory changes should arouse a suspicion of malfunction; however, in the relatively uncommon patient with a prosthesis and an artificial pacemaker, it should be recognized that auscultatory changes may well have a physiologic explanation.
D F Brown; G Prescott
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Publication Detail:
Type:  Case Reports; Journal Article    
Journal Detail:
Title:  Chest     Volume:  69     ISSN:  0012-3692     ISO Abbreviation:  Chest     Publication Date:  1976 Apr 
Date Detail:
Created Date:  1976-07-06     Completed Date:  1976-07-06     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0231335     Medline TA:  Chest     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  490-4     Citation Subset:  AIM; IM    
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MeSH Terms
Heart Auscultation*
Heart Sounds*
Heart Valve Prosthesis*
Middle Aged
Mitral Valve / surgery
Pacemaker, Artificial*
Tricuspid Valve / surgery

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

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