Document Detail


Correlation between LV regional strain and LV dyssynchrony assessed by 2D STE in patients with different levels of diastolic dysfunction.
MedLine Citation:
PMID:  21039818     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
BACKGROUNDS: Little is known about left ventricular (LV) circumferential, radial, and longitudinal functions in patients with diastolic dysfunction (DD). The aims of this study were: (1) to characterize circumferential, radial, and longitudinal strain and (2) to use 2D speckle tracking echocardiography (STE) to evaluate LV dyssynchrony in different DD grades.
METHODS AND RESULTS: We studied 128 subjects (90 with DD, 38 healthy controls). DD was divided into three groups according to grade (group 1; mild, group 2; moderate, and group 3; severe). Regional strains were measured by 2D STE. Global LV CS was significantly lower in group 3 (-17.4 ± 5.2) compared with healthy controls (-21.2 ± 3.6), group 1 (-20.7 ± 3.9), and group 2 (-20.2 ± 4.0) (P < 0.0001 for each comparison). Global LV RS and LS were significantly lower in all three groups than in controls.
CONCLUSION: LV, LS, and RS were lower in patients with mild to severe DD than in healthy controls. However, LV CS was similar to normal control values in patients with mild to moderate DD but was lower in patients with severe DD. Circumferential segmental LV motion is likely to compensate for impaired longitudinal and radial LV motion in patients with DD. LV dyssynchrony also occurred significantly more frequently in patients with DD with normal EF than in healthy controls. These results suggest that, in patients with DD and normal EF, contraction of the myocardium is not synchronized and that LV dyssynchrony plays a role in producing diastolic heart failure.
Authors:
Sung-Ji Park; Jae K Oh
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Publication Detail:
Type:  Journal Article     Date:  2010-10-29
Journal Detail:
Title:  Echocardiography (Mount Kisco, N.Y.)     Volume:  27     ISSN:  1540-8175     ISO Abbreviation:  Echocardiography     Publication Date:  2010 Nov 
Date Detail:
Created Date:  2010-11-24     Completed Date:  2011-04-07     Revised Date:  2014-07-30    
Medline Journal Info:
Nlm Unique ID:  8511187     Medline TA:  Echocardiography     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1194-204     Citation Subset:  IM    
Copyright Information:
© 2010, Wiley Periodicals, Inc.
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MeSH Terms
Descriptor/Qualifier:
Algorithms*
Echocardiography, Doppler / methods*
Elastic Modulus
Elasticity Imaging Techniques / methods*
Female
Humans
Image Enhancement / methods
Image Interpretation, Computer-Assisted / methods*
Male
Middle Aged
Reproducibility of Results
Sensitivity and Specificity
Statistics as Topic
Ventricular Dysfunction, Left / physiopathology*,  ultrasonography*

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


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