Normal 2-Dimensional Strain Values of the Left Ventricle: A Substudy of the Normal Echocardiographic Measurements in Korean Population Study.
10.4250/jcu.2016.24.4.285
- Author:
Jae Hyeong PARK
1
;
Ju Hee LEE
;
Sang Yeub LEE
;
Jin Oh CHOI
;
Mi Seung SHIN
;
Mi Jeong KIM
;
Hae Ok JUNG
;
Jeong Rang PARK
;
Il Suk SOHN
;
Hyungseop KIM
;
Seong Mi PARK
;
Nam Jin YOO
;
Jung Hyun CHOI
;
Hyung Kwan KIM
;
Goo Yeong CHO
;
Mi Rae LEE
;
Jin Sun PARK
;
Chi Young SHIM
;
Dae Hee KIM
;
Dae Hee SHIN
;
Gil Ja SHIN
;
Sung Hee SHIN
;
Kye Hun KIM
;
Woo Shik KIM
;
Seung Woo PARK
Author Information
1. Division of Cardiology, Department of Internal Medicine, Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon, Korea.
- Publication Type:Original Article
- Keywords:
Echocardiography;
Strain;
Normal population;
Reference value
- MeSH:
Echocardiography*;
Female;
Healthy Volunteers;
Heart Ventricles*;
Hospitals, University;
Humans;
Male;
Methods;
Multicenter Studies as Topic;
Reference Values;
Specialization
- From:Journal of Cardiovascular Ultrasound
2016;24(4):285-293
- CountryRepublic of Korea
- Language:English
-
Abstract:
BACKGROUND: It is important to understand the distribution of 2-dimensional strain values in normal population. We performed a multicenter trial to measure normal echocardiographic values in the Korean population. METHODS: This was a substudy of the Normal echOcardiogRaphic Measurements in KoreAn popuLation (NORMAL) study. Echocardiographic specialists measured frequently used echocardiographic indices in healthy people according to a standardized method at 23 different university hospitals. The strain values were analyzed from digitally stored images. RESULTS: Of a total of 1003 healthy participants in NORMAL study, 2-dimensional strain values were measured in 501 subjects (265 females, mean age 47 ± 15 years old) with echocardiographic images only by GE echocardiographic machines. Interventricular septal thickness, left ventricular (LV) posterior wall thickness, systolic and diastolic LV dimensions, and LV ejection fraction were 7.5 ± 1.0 mm, 7.4 ± 1.0 mm, 29.9 ± 2.8 mm, 48.9 ± 3.6 mm, and 62 ± 4%, respectively. LV longitudinal systolic strain (LS) values of apical 4-chamber (A4C) view, apical 3-chamber (A3C) view, apical 2-chamber (A2C) view, and LV global LS (LVGLS) were −20.1 ± 2.3, −19.9 ± 2.7, −21.2 ± 2.6, and −20.4 ± 2.2%, respectively. LV longitudinal systolic strain rate (LVLSR) values of the A4C view, A3C view, A2C view, and LV global LSR (LVGLSR) were −1.18 ± 0.18, −1.20 ± 0.21, −1.25 ± 0.21, and −1.21 ± 0.21(−s), respectively. Females had lower LVGLS (−21.2 ± 2.2% vs. −19.5 ± 1.9%, p < 0.001) and LVGLSR (−1.25 ± 0.18(−s) vs. −1.17 ± 0.15(−s), p < 0.001) values than males. CONCLUSION: We measured LV longitudinal strain and strain rate values in the normal Korean population. Since considerable gender differences were observed, normal echocardiographic cutoff values should be differentially applied based on sex.
