Document Detail

Left ventricular function by echocardiography in children with fixed aortic stenosis.
MedLine Citation:
PMID:  983959     Owner:  NLM     Status:  MEDLINE    
Left ventricular function was evaluated echocardiographically within 24 hours of cardiac catheterization in 45 children with fixed aortic stenosis. Left ventricular systolic time intervals, mean velocity of circumferential fiber shortening, left ventricular end-diastolic volume and shortening fraction were evaluated. Some patients with severe aortic stenosis had a shortened preejection period, prolonged ejection time and increased mean velocity of circumferential fiber shortening in comparison with normal subjects, but these findings were not consistent within the group with severe aortic stenosis or apparent in patients with mild or moderate aortic stenosis. Left ventricular end-diastolic volume was smaller in children with severe obstruction than in normal children. Evaluation of the shortening fraction provided good separation of patients with significant obstruction from those with mild disease. Further, there was a linear correlation between the shortening fraction and the left ventricular-aortic gradient demonstrated at cardiac catheterization. This correlation was also of use in evaluating the response of patients to surgical relief of obstruction. Pre- and postoperative echocardiographic evaluation of the shortening fraction appears to provide a readily available noninvasive method of assessing the course and severity of obstruction in fixed aortic stenosis in children.
G L Johnson; R A Meyer; D C Schwartz; J Korfhagen; S Kaplan
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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:  38     ISSN:  0002-9149     ISO Abbreviation:  Am. J. Cardiol.     Publication Date:  1976 Nov 
Date Detail:
Created Date:  1977-01-03     Completed Date:  1977-01-03     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:  611-9     Citation Subset:  AIM; IM    
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MeSH Terms
Aortic Valve Insufficiency / physiopathology
Aortic Valve Stenosis / physiopathology*,  surgery
Blood Pressure
Cardiac Output
Cardiac Volume
Child, Preschool
Follow-Up Studies
Heart Rate
Heart Ventricles / physiopathology*
Myocardial Contraction
Postoperative Complications / physiopathology
Time Factors

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

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