Normal 2-dimensional strain values of the left ventricle: A substudy of the normal echocardiographic measurements in Korean population study

Jae Hyeong Park, 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 Yo, Jung Hyun Cho, Hyung Kwan Kim, Goo Yeong Cho, Mi Rae Lee, Jin Sun Park, Chi Young Shim, Dae Hee Kim, Dae Hee ShinGil Ja Shin, Sung Hee Shin, Kye Hun Kim, Woo Shik Kim, Seung Woo Park

Research output: Contribution to journalArticle

17 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)285-293
Number of pages9
JournalJournal of Cardiovascular Ultrasound
Volume24
Issue number4
DOIs
Publication statusPublished - 2016 Dec

All Science Journal Classification (ASJC) codes

  • Radiology Nuclear Medicine and imaging
  • Cardiology and Cardiovascular Medicine

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