Document Detail

Effect of atrial and ventricular activation interval on hemodynamics during atrioventricular and ventriculoatrial pacing: determination from pressure-volume loops in dogs.
MedLine Citation:
PMID:  7728785     Owner:  NLM     Status:  MEDLINE    
To determine the effect of relative timing of atrial and ventricular activation on hemodynamic indices, we evaluated pressure-volume loops during pacing at 160 beats/min with various atrioventricular intervals in dogs. End-systolic pressure, end-diastolic volume, and stroke volume were reduced during pacing at atrioventricular intervals of 0 ms, compared with 80 ms. These changes were more significant during pacing at atrioventricular intervals of -50 and -100 ms than at 0 ms. During tachycardia, the abnormal timing of atrial contraction leads to unfavorable hemodynamic change and the degree of the changes are determined by the ventriculoatrial activation interval.
Y Matsui; T Iwasaka; M Karakawa; Y Takayama; H Takashima; H Taniguchi; T Tamura; S Kitashiro; T Sugiura; M Inada
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Cardiology     Volume:  86     ISSN:  0008-6312     ISO Abbreviation:  Cardiology     Publication Date:  1995  
Date Detail:
Created Date:  1995-06-01     Completed Date:  1995-06-01     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  1266406     Medline TA:  Cardiology     Country:  SWITZERLAND    
Other Details:
Languages:  eng     Pagination:  28-33     Citation Subset:  IM    
Second Department of Internal Medicine, Kansai Medical University, Osaka, Japan.
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MeSH Terms
Atrial Function / physiology*
Cardiac Pacing, Artificial
Heart Catheterization
Hemodynamics / physiology*
Tachycardia / physiopathology*
Ventricular Function / physiology*

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