Document Detail


Systolic time intervals and heart sounds in left bundle branch block.
MedLine Citation:
PMID:  1078320     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Systolic time intervals and heart sounds were studied in twenty patients with left bundle branch block. A definite cause for the organic heart disease was not ascertained. Abnormal duration of the electromechanical systole (Q-A2), due to a prolongation both of the preejection period (PEP) and of the Q-M1 intervals, was found to exist in all. Prolongation of Q-M1 was due to lengthening either of the electromechanical interval (EMI) or of the pre-isovolumetric contraction time (PICT). Isovolumetric contraction time (ICT) was prolonged in thirteen patients only. There was a good correlation between LVET/ICT ratio and the duration of ICT intervals. Six patients showed a first heart sound of normal intensity and duration. There was no correlation between the duration of the systolic time intervals and the characteristics of the first and second heart sounds.
Authors:
E Macieira-Coelho; A Lema-Santos; H B Machado; L L Faleiro
Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Angiology     Volume:  27     ISSN:  0003-3197     ISO Abbreviation:  Angiology     Publication Date:    1976 Jul-Aug
Date Detail:
Created Date:  1988-04-18     Completed Date:  1988-04-18     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0203706     Medline TA:  Angiology     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  447-54     Citation Subset:  IM    
Affiliation:
Department of Therapeutics, Hospital de Santa Maria, Lisbon, Portugal.
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MeSH Terms
Descriptor/Qualifier:
Aged
Aged, 80 and over
Bundle-Branch Block / physiopathology*
Electrocardiography
Heart Auscultation*
Heart Sounds*
Humans
Kinetocardiography
Middle Aged
Myocardial Contraction*
Phonocardiography
Stroke Volume
Systole*

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


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