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Lack of Association between Stroke and Left Atrial Out-Pouching Structures: Results of a Case-Control Study

Authors
 Ji Young Ko  ;  Young Dae Kim  ;  Yoo Jin Hong  ;  Hye-Jeong Lee  ;  Jin Hur  ;  Byoung Wook Choi  ;  Ji Hoe Heo  ;  Young Jin Kim 
Citation
 PLoS One, Vol.8(10) : e76617, 2013 
Journal Title
 PLoS One 
ISSN
 1932-6203 
Issue Date
2013
Abstract
BACKGROUND AND PURPOSE: Clinical significance of out-pouching structures of the left atrium (LA) as potential embolic sources remains unclear. We sought to evaluate the association between stroke and LA out-pouching structures. METHODS: A case-control study was conducted to assess the prevalence of LA out-pouching structures in subjects with and without stroke. Case subjects were 270 stroke patients who had undergone cardiac CT. Control subjects were 270 age- and sex-matched patients without a history of stroke and who had undergone cardiac CT. Presence of LA out-pouching structures was determined by ECG-gated cardiac CT. The location of out-pouching structures was categorized as near Bachmann bundle, anterior, inferoseptal, inferior, and lateral. The prevalence, number and location of out-pouching structures and clinical characteristics were compared between the two groups. RESULTS: One hundred sixty eight out-pouching structures were identified in 139 stroke patients (51%), while a total of 169 out-pouching structures were found in 155 control patients (57%) (p=0.1949). The prevalence of LA out-pouching structures with different locations was not significantly different between the stroke group and control group. In the stroke group, the prevalence of out-pouching structures was not significantly different by subtypes of ischemic stroke and the prevalence of LA out-pouching structures was not different between patients with atrial fibrillation (AF) and without AF. CONCLUSION: The left atrial out-pouching structures are commonly seen in a population with and without stroke with similar prevalence. Our study suggests that LA out-pouching structures are not significant risk factors of stroke.
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DOI
10.1371/journal.pone.0076617
Appears in Collections:
1. Journal Papers (연구논문) > 1. College of Medicine (의과대학) > Dept. of Neurology (신경과학교실)
1. Journal Papers (연구논문) > 1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실)
Yonsei Authors
고지영(Ko, Ji Young)
김영대(Kim, Young Dae)
김영진(Kim, Young Jin) ORCID logo https://orcid.org/0000-0002-6235-6550
이혜정(Lee, Hye Jeong) ORCID logo https://orcid.org/0000-0003-4349-9174
최병욱(Choi, Byoung Wook) ORCID logo https://orcid.org/0000-0002-8873-5444
허지회(Heo, Ji Hoe) ORCID logo https://orcid.org/0000-0001-9898-3321
허진(Hur, Jin) ORCID logo https://orcid.org/0000-0002-8651-6571
홍유진(Hong, Yoo Jin) ORCID logo https://orcid.org/0000-0002-7276-0944
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URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/87970
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