Document Detail

Echocardiographic predictors of left atrial appendage spontaneous echocontrast in patients with stroke and atrial fibrillation.
MedLine Citation:
PMID:  16376767     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: The presence of spontaneous echocontrast (SEC) in the left atrium (LA) or LA appendage (LAA) has been associated with a higher risk of thromboembolism and cerebrovascular accidents. The purpose of this study was to define the new transesophageal echocardiographic predictors of SEC for patients with stroke and atrial fibrillation.
METHODS: We studied 47 patients with stroke and atrial fibrillation who were undergoing transesophageal echocardiography for the evaluation of source of cardiac emboli. Patients were divided into two groups based on the absence (group 1) or presence (group 2) of SEC in the LAA.
RESULTS: Compared with group 1, group 2 had larger LA, larger LAA minimum and maximum areas, and decreased LAA flow velocity, LAA wall velocity, LAA tissue intensity, and intensity ratio. In the stepwise discriminate analysis tissue intensity of LAA, minimum LAA area, LAA flow velocity, and LAA wall velocity were found as independent predictors of LAA SEC. LAA wall velocity had the greatest area under the receiver operating characteristic curve, indicating that the most powerful parameter for SEC is LAA wall velocity.
CONCLUSION: Decreased LAA flow velocity and LA wall velocity, increased LAA size, and less negative LAA tissue intensity are associated with SEC in patients with nonvalvular atrial fibrillation. Strain and strain measurements of LAA give no more benefit.
Necla Ozer; Harun Kiliç; Umut Arslan; Enver Atalar; Serdar Aksöyek; Kenan Ovünç; Hakan Ay; Ercan Oztürk; Ergun Karaagaoglu; Lale Tokgozoglu; Sirri S Kes
Related Documents :
9059247 - Blood flow velocity in the extraocular vessels in chronic smokers.
18192807 - Transthoracic doppler echocardiography for the assessment of left atrial appendage size...
1332397 - Estimation of blood flow in the carotid artery and intraorbital ophthalmic artery by co...
7755447 - The measurement of the calibers and blood-flow velocities of the arteries of the circle...
1906487 - Effects of bovine somatotropin on physiologic responses of lactating holstein and jerse...
7162337 - Effect of naloxone on neurologic deficit and cortical blood flow during focal cerebral ...
Publication Detail:
Type:  Controlled Clinical Trial; Journal Article    
Journal Detail:
Title:  Journal of the American Society of Echocardiography : official publication of the American Society of Echocardiography     Volume:  18     ISSN:  1097-6795     ISO Abbreviation:  J Am Soc Echocardiogr     Publication Date:  2005 Dec 
Date Detail:
Created Date:  2005-12-26     Completed Date:  2006-04-20     Revised Date:  2011-06-10    
Medline Journal Info:
Nlm Unique ID:  8801388     Medline TA:  J Am Soc Echocardiogr     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1362-5     Citation Subset:  IM    
Department of Cardiology, Hacettepe University, Ankara, Turkey.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Atrial Appendage / ultrasonography*
Atrial Fibrillation / complications,  ultrasonography*
Echocardiography, Transesophageal / methods*
Image Interpretation, Computer-Assisted / methods*
Reproducibility of Results
Risk Assessment / methods*
Risk Factors
Sensitivity and Specificity
Stroke / etiology,  ultrasonography*
Comment In:
J Am Soc Echocardiogr. 2011 May;24(5):520-5   [PMID:  21514502 ]

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

Previous Document:  Predictive value of biphasic response during dipyridamole echocardiography test in the low-risk grou...
Next Document:  Left atrial appendage flow velocity as a quantitative surrogate parameter for thromboembolic risk: d...