Document Detail

Atrial defect size after Blalock-Hanlon atrioseptectomy.
MedLine Citation:
PMID:  900039     Owner:  NLM     Status:  MEDLINE    
In transposition of the great arteries, a Blalock-Hanlon closed atrial septectomy is performed to improve intracardiac mixing at the atrial level. Although the Blalock-Hanlon septectomy is a common surgical procedure in cyanotic congenital heart disease, it has not been adequately assessed pathologically. In 14 heart specimens from patients (aged 3 days to 19 years) with transposition of the great arteries and Blalock-Hanlon septectomy, the margins of the septectomy, fossa ovalis and atrial septum were identified. The total area of the septum and its defects was calculated using planimetry. The ratio of defect size to atrial septal area was expressed as percent communication, which ranged from 5 to 39 (mean 18) percent in eight specimens with intact limbus of the foramen ovale and 26 to 57 (mean 42) percent in six specimens in which the limbus had been excised. The finding that specimens in which the Blalock-Hanlon defect extended into the fossa ovalis had the largest total communication emphasizes that to obtain optimal bidirectional atrial mixing the surgeon should extend the Blalock-Hanlon procedure across the limbus into the foramen ovale.
E B Clark; L J Sweeney; G C Rosenquist
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  The American journal of cardiology     Volume:  40     ISSN:  0002-9149     ISO Abbreviation:  Am. J. Cardiol.     Publication Date:  1977 Sep 
Date Detail:
Created Date:  1977-10-20     Completed Date:  1977-10-20     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0207277     Medline TA:  Am J Cardiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  405-8     Citation Subset:  AIM; IM    
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MeSH Terms
Child, Preschool
Heart Atria / surgery*
Heart Septum / surgery*
Infant, Newborn
Transposition of Great Vessels / surgery*

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

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