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Normal references of right ventricular strain values by two-dimensional strain echocardiography according to the age and gender

  • Jae-Hyeong Park
  • Jin-Oh Choi
  • Seung Woo Park
  • Goo-Yeong Cho
  • Jin Kyung Oh
  • Jae-Hwan Lee
  • In-Whan Seong
Original Paper

Abstract

Right ventricular (RV) strain values by 2-dimensional strain echocardiography (STE) can be used as objective markers of RV systolic function. However, there is little data about normal reference RV strain values according to age and gender. We measured normal RV strain values by STE. RV strain values were analyzed from the digitally stored echocardiographic images from NORMAL (Normal echOcardiogRaphic diMensions and functions in KoreAn popuLation) study for the measurement of normal echocardiographic values performed in 23 Korean university hospitals. We enrolled total 1003 healthy persons in the NORMAL study. Of them, we analyzed 2-dimensional RV strain values in 493 subjects (261 females, mean 47 ± 15 years old) only with echocardiographic images by GE machines. Their LV systolic and diastolic functions were normal. RV fractional area change was 48 ± 6% and tricuspid annular plane systolic excursion was 23 ± 3 mm. Total RV global longitudinal peak systolic strain (RVGLStotal) was −21.5 ± 3.2%. Females had higher absolute RVGLStotal (−22.3 ± 3.3 vs −20.7 ± 2.9%, p < 0.001) than males. Younger (<50 years old) females had higher absolute RVGLStotal (−22.9 ± 3.2 vs −20.5 ± 2.8%, p < 0.001) than age matched males. RVGLStotal in females gradually increased according to age (p for trend = 0.002) and becomes almost similar in age ≥50 years. However, this trend was not seen in males (p for trend = 0.287), and younger males had similar RVGLStotal value to that of older males (age ≥50 years, −20.5 ± 2.8 vs −20.9 ± 3.1%, p = 0.224). We calculated normal RVGLS values in normal population. Females have higher absolute strain values than males, especially in younger age groups (<50 years old).

Keywords

Echocardiography Strain Normal population Reference value 

Notes

Compliance with ethical standards

Conflict of interest

The authors have nothing to declare.

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Copyright information

© Springer Science+Business Media B.V. 2017

Authors and Affiliations

  1. 1.Division of Cardiology, Department of Internal Medicine, Chungnam National University HospitalChungnam National University School of MedicineDaejeonSouth Korea
  2. 2.Division of Cardiology, Department of Medicine, Samsung Medical CenterSungkyunkwan University School of MedicineSeoulSouth Korea
  3. 3.Division of Cardiology, Department of Internal Medicine, Seoul National University and Cardiovascular CenterSeoul National University Bundang HospitalSeongnamSouth Korea

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