Document Detail

Influence of alterations in heart rate on echocardiographic measurements in the dog.
MedLine Citation:
PMID:  3377317     Owner:  NLM     Status:  MEDLINE    
M-mode echocardiograms were recorded from 10 conscious, clinically normal dogs at various heart rates during atrial pacing. Heart rate was recorded as cycle length (seconds), and measurements were made only during sustained 1:1 atrial-to-ventricular conduction. In all dogs studied, there was a significant (P less than 0.01) positive correlation of left ventricular internal chamber dimension in diastole and systole to cycle length. Also, there was positive correlation between these left ventricular dimensions and the square root of cycle length, which predicted a plateau in dimensional changes as cycle length increased. Echocardiographic shortening fraction and left ventricular and septal wall thickness measurements did not change consistently during pacing. We concluded that left ventricular chamber dimensions in the dog may be significantly affected by alterations in heart rate.
G Jacobs; K Mahjoob
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  American journal of veterinary research     Volume:  49     ISSN:  0002-9645     ISO Abbreviation:  Am. J. Vet. Res.     Publication Date:  1988 Apr 
Date Detail:
Created Date:  1988-07-05     Completed Date:  1988-07-05     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0375011     Medline TA:  Am J Vet Res     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  548-52     Citation Subset:  IM    
Department of Small Animal Medicine, College of Veterinary Medicine, University of Georgia, Athens 30602.
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MeSH Terms
Dogs / physiology*
Echocardiography / veterinary*
Heart / anatomy & histology*,  physiology
Heart Rate*

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

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