Document Detail

The course of the conduction system in single ventricle with inverted (L-) loop and inverted (L-) transposition.
MedLine Citation:
PMID:  1116258     Owner:  NLM     Status:  MEDLINE    
The conduction systems of three hearts with single ventricle and inverted (L-) loop and inverted (L-) transposition were studied by serial section. The course of the conduction system was similar in all three hearts. The regular (posterior) atrioventricular (A-V) node was rudimentary and did not form the bundle of His. An accessory (anterior) A-V node was present in the roof of the right atrium. This node pierced the connective tissue adjacent to the right side of the pulmonary annulus to form the bundle of His. The bundle proceeded into the main ventricular chamber lying on the septum between this chamber and the small outlet chamber. It bifurcated a varying distance from the defect in this septum. The right bundle branch proceeded through the septal wall to the trabeculae of the outlet chamber. The left bundle branch proceeded to caudad on the anterior wall of the main ventricular chamber. An unusual feature in one case was the splitting of the anterior node into two parts, one forming the bundle of His, and the other giving off Mahaim fibers to the ventricular myocardium. The surgical importance of avoiding the right side of the pulmonary annulus and the region adjoining the defect is stressed.
S Bharati; M Lev
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Circulation     Volume:  51     ISSN:  0009-7322     ISO Abbreviation:  Circulation     Publication Date:  1975 Apr 
Date Detail:
Created Date:  1975-05-27     Completed Date:  1975-05-27     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0147763     Medline TA:  Circulation     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  723-30     Citation Subset:  AIM; IM    
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MeSH Terms
Atrioventricular Node / pathology
Bundle of His / pathology
Heart Conduction System / pathology*
Heart Defects, Congenital / pathology*
Heart Ventricles / abnormalities
Infant, Newborn
Transposition of Great Vessels / pathology*

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

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