Document Detail


Prediction of aortic annulus diameter by two-dimensional echocardiography. Application in the preoperative selection and preparation of homograft aortic valves.
MedLine Citation:
PMID:  1934446     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The preoperative selection and preparation of an appropriately sized homograft aortic valve would allow delay of surgery if a suitable valve were unavailable, thus pre-emptying inventory limitations, and a decrease of ischemic time in cases of isolated aortic valve replacement. An accurate preoperative measurement of the aortic annulus diameter is the prerequisite for such selection. The aortic annulus diameter was measured retrospectively in a blinded fashion from the two-dimensional echocardiograms of 62 patients who underwent aortic valve replacement with mechanical or bioprosthetic valves. Measurements were obtained with electronic calipers by two observers. Confidence in the accuracy of the measurement obtained was ranked on a scale from 1 to 5. The mean difference between echocardiographic measurements and prosthetic valve sizes was 0.39 +/- 0.46 mm (mean +/- 2SD) for observer 1 and -0.26 +/- 1.44 mm for observer 2. Ninety-eight percent of observer 1 measurements and 80% of observer 2 measurements were within 1.5 mm of the prosthetic valve size (p less than 0.01 for differences between observers). Confidence scores were higher for observer 1 and for both observers were related to accuracy. The aortic annulus diameter of eight patients scheduled for homograft aortic valve replacement was measured prospectively with the same technique. There was an excellent agreement between the two-dimensional echocardiographic measurements and the surgical measurements. In the last 5 consecutive patients, the echocardiographic measurement was used for the preoperative selection and preparation of the appropriate valve. In conclusion, measurement of the aortic annulus diameter by two-dimensional echocardiography is feasible and clinically useful for the preoperative selection and preparation of homograft aortic valves.(ABSTRACT TRUNCATED AT 250 WORDS)
Authors:
M Moscucci; L Weinert; R B Karp; A Neumann
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Circulation     Volume:  84     ISSN:  0009-7322     ISO Abbreviation:  Circulation     Publication Date:  1991 Nov 
Date Detail:
Created Date:  1991-12-16     Completed Date:  1991-12-16     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  0147763     Medline TA:  Circulation     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  III76-80     Citation Subset:  AIM; IM    
Affiliation:
Department of Medicine, University of Chicago, IL.
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MeSH Terms
Descriptor/Qualifier:
Aortic Valve / transplantation,  ultrasonography*
Aortic Valve Insufficiency / surgery*
Aortic Valve Stenosis / surgery*
Bioprosthesis
Echocardiography*
Evaluation Studies as Topic
Heart Valve Prosthesis
Humans
Observer Variation
Transplantation, Homologous

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


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