Document Detail


Myocardial fiber diameter and regional distribution in the ventricular wall of normal adult hearts, hypertensive hearts and hearts with hypertrophic cardiomyopathy.
MedLine Citation:
PMID:  6682019     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Myocardial fiber diameters were measured to determine their distribution throughout the ventricular wall in normal adult hearts, hypertensive hearts and hearts with hypertrophic cardiomyopathy (HCM). In normal adult hearts and hypertensive hearts, the diameter decreased from the inner to the outer third of the left ventricular free wall and from the left ventricular side to the right ventricular side of the septum. In HCM, these regional differences were preserved in the left ventricular free wall, but not in the septum. The diameter was greatest in the middle third of the septum, where myocardial fiber disarray was widely distributed. The diameters of the fibers in the right ventricular side of the septum were significantly larger than those of the fibers in the left ventricular side of the septum in HCM. This finding, in contrast to that in normal adult hearts or hypertensive hearts, was considered to be related to the inward convex curvature of the left ventricular chamber. Although there was no significant difference in the diameter of myocardial fibers in the left ventricular free wall between hypertensive hearts and hearts with HCM, the diameters of those in the right ventricular free wall, in the right ventricular side of the septum and in the middle third of the septum were significantly larger in HCM than in hypertensive hearts. We conclude that there is a transmural variation of myocardial fiber diameter in the left ventricular free wall and the ventricular septum, and such transmural variation in HCM is clearly different from that in hypertensive hearts.
Authors:
T Hoshino; H Fujiwara; C Kawai; Y Hamashima
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Circulation     Volume:  67     ISSN:  0009-7322     ISO Abbreviation:  Circulation     Publication Date:  1983 May 
Date Detail:
Created Date:  1983-05-27     Completed Date:  1983-05-27     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0147763     Medline TA:  Circulation     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1109-16     Citation Subset:  AIM; IM    
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MeSH Terms
Descriptor/Qualifier:
Adult
Aged
Cardiomyopathy, Hypertrophic / pathology*
Female
Heart / anatomy & histology*
Heart Diseases / pathology*
Heart Septum / pathology
Heart Ventricles / pathology*
Humans
Hypertension / pathology*
Male
Middle Aged
Myocardium / cytology,  pathology*
Organ Size

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


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