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Normal Reference Values for Left Atrial Strain and Its Determinants from a Large Korean Multicenter Registry

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Author(s)
Byung Joo SunJae-Hyeong ParkMinyeong LeeJin-Oh ChoiJu-Hee LeeMi-Seung ShinMi-Jeong KimHae Ok JungJeong Rang ParkIl Suk SohnHyungseop KimHyung-Kwan KimGoo-Yeong ChoJin-Sun ParkChi Young ShimSung Hee ShinKye Hun KimWoo-Shik KimSeung Woo Park
Keimyung Author(s)
Kim, Hyung Seop
Department
Dept. of Internal Medicine (내과학)
Dept. of Thoracic & Cardiovascular Surgery (흉부외과학)
Journal Title
Journal of Cardiovascular Imaging
Issued Date
2020
Volume
28
Issue
3
Keyword
LA functionLA strainSpeckle-tracking echocardiography
Abstract
BACKGROUND:
Left atrial (LA) strain is a novel parameter of LA function. However, its reference value has not been established, and the determining factors for LA strain remain elusive. We aimed to present LA strain with reservoir, conduit, and contractile components and associated parameters in a large-sized group of healthy individuals.

METHODS:
The present study was from a prospective multicenter registry in South Korea. Subjects who had no history of cardiovascular disease with adequate images were eligible for inclusion. LA reservoir, conduit, and contractile strains (LASRES, LASCD and LASCT, respectively) were measured. Left ventricular global longitudinal strain (LV GLS) and early and late diastolic strain rates (DSRe and DSRa, respectively) were also evaluated.

RESULTS:
Among a total of 324 subjects (mean age: 49 ± 16 years, 167 females), the mean LASRES, LASCD, and LASCT values were 35.9% ± 10.6%, 21.9% ± 9.3%, and 13.9% ± 3.6%, respectively. Mean LV GLS was -20.4% ± 2.2%, and mean DSRe and DSRa were 1.6 ± 0.4 s-1 and 0.8 ± 0.3 s-1, respectively. With aging, LASRES and LASCD showed significant decreases. Factors showing independent associations with LASRES were age (B = -0.425, p < 0.001), DSRe (B = 4.706, p = 0.001), and LV GLS (B = -1.081, p < 0.001). Age (B = -0.319, p < 0.001), DSRe (B = 4.140, p = 0.002), DSRa (B = -3.409, p = 0.018), and LV GLS (B = -0.783, p < 0.001) showed associations with LASCD. With LASCT, only DSRa showed a correlation (R = 0.277, p < 0.001).

CONCLUSIONS:
We presented LA strain in a large-sized group of healthy subjects. Age is a significant determinant of LA function. Associations of LA strain with diastolic strain rates and LV GLS reflect cardiac mechanics.
Keimyung Author(s)(Kor)
김형섭
Publisher
School of Medicine (의과대학)
Citation
Byung Joo Sun et al. (2020). Normal Reference Values for Left Atrial Strain and Its Determinants from a Large Korean Multicenter Registry. Journal of Cardiovascular Imaging, 28(3), 186–198. doi: 10.4250/jcvi.2020.0043
Type
Article
ISSN
2586-7296
Source
https://e-jcvi.org/search.php?where=aview&id=10.4250/jcvi.2020.0043&code=3059JCVI&vmode=FULL
DOI
10.4250/jcvi.2020.0043
URI
https://kumel.medlib.dsmc.or.kr/handle/2015.oak/42847
Appears in Collections:
1. School of Medicine (의과대학) > Dept. of Internal Medicine (내과학)
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