| Elongation as a new shape index for the left ventricle. | |
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MedLine Citation:
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PMID: 12537409 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVES: This study was done to quantify the shape of the left ventricle (LV). It was proposed that the shape of the LV is intimately related to its performance and that its elongation (ELO) is a sensitive measure of this performance. The performance was tested against classical cardiovascular parameters. METHODS: Using echocardiography and Simpson's rule, the endocardial surface area of the LV was calculated noninvasively with a simple experimental-mathematical model at enddiastole and endsystole. ELO as shape index was derived from the endocardial surface area of the LV with a simple formula. The endocardial surface area of the LV and ELO were determined in volunteers, in patients with mild heart failure and in patients with severe heart failure. RESULTS: The normal value of endocardial surface area of LV at enddiastole is 138.3 cm2 while the normal value at endsystole is 99 cm2. The endocardial surface area of the LV is significantly bigger in patients with mild heart failure than in volunteers (p < 0.01) while the parameters ELO, ejection fraction and Doppler measurements are similar. The normal values of ELO at diastole and systole are 12 and 25 respectively. The value of ELO at endsystole is lower only in patients with severe heart failure. This means a more spherical shape and poor systolic function of the LV. CONCLUSION: ELO is usefull as quantitative and qualitative index of left ventricular shape. ELO could be integrated and applied with new diagnostic tools such three-dimensional and contrast echocardiography. |
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Authors:
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B Knap; G Juznic; A F Bren; G Drzewiecki; A Noordergraaf |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: The international journal of cardiovascular imaging Volume: 18 ISSN: 1569-5794 ISO Abbreviation: Int J Cardiovasc Imaging Publication Date: 2002 Dec |
Date Detail:
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Created Date: 2003-01-22 Completed Date: 2003-04-22 Revised Date: 2007-11-15 |
Medline Journal Info:
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Nlm Unique ID: 100969716 Medline TA: Int J Cardiovasc Imaging Country: United States |
Other Details:
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Languages: eng Pagination: 421-30 Citation Subset: IM |
Affiliation:
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Department of Internal Medicine, Centre for Dialysis, Clinical Centre, Ljubljana, Slovenia. bojan.knap@mf.uni-lj.si |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Case-Control Studies Echocardiography* Female Heart Failure / physiopathology*, ultrasonography* Heart Ventricles / anatomy & histology*, physiopathology* Humans Male Middle Aged Ventricular Dysfunction, Left / physiopathology*, ultrasonography* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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