Left Ventricular Dimension and Ejection Fraction Values by Echocardiography in Adolescents: An Epidemiology Study in Bali, Indonesia
Author : L. O. S. Suastika, I. B. R. Wibhuti, K. B. Nadha, M. Chowdhury, J. Chowdhury, K. Olejnik, E. Bouman,
Upload Date : 19-04-2018
Background: Echocardiographic reference ranges of left ventricular (LV) dimension and LV ejection fraction (LVEF) in adolescents is currently not available in Indonesia. The purpose of this study was to establish values of LV dimension and LVEF in adolescents in Bali and to evaluate their correlation to several clinical parameters.
Methods: We performed a cross-sectional study involving junior high school students in Karangasem, Bali, Indonesia. The end-diastolic LV internal dimension (LVIDd), LV posterior wall thickness (LVPWd) and interventricular septum (IVSd) values were determined by 2D echocardiographic examination using Terason uSmart 3200t ultrasound tablets. Demographics and socioeconomic variables were documented and followed by physical examinations.
Results: We evaluated 213 children aged 12-17 years old (mean age 13.9±0.9 years, 53.5% female), 82.6% were deemed to be living in low or moderate socioeconomic conditions. IVSd, LVPWd, LVIDd and LVEF values in male and female were 0.40-1.50 cm (0.69±0.15 cm) and 0.40-0.90 cm (0.57±0.11 cm), 0.50-1.23 cm (0.76±0.13 cm) and 0.40-0.90 cm (0.60±0.09 cm), 2.71-5.00 cm (4.05±0.47 cm) and 0.70-5.16 cm (3.98±0.52 cm), 60.00-69.00% (64.89±1.57%) and 52.00-79.00% (63.54±4.59%), respectively. Boys had significantly higher IVSd (P<0.001), LVPWd (P<0.001) and LVEF (P=0.004) compared to girls. There was no gender difference in LVIDd. Both gender showed positive correlation of IVSd, LVPWd and LVIDd to body weight, body mass index and systolic blood pressure. LVEF had no correlation to any clinical parameters. IVSd, LVPWd and LVIDd values in our study were lower in all BSA groups compared to published references.
Conclusion: These are the first echocardiographic data of LV dimension and LVEF in adolescents in Bali, Indonesia. It can be used as normal reference tool for further studies. In adolescents, gender should be taken in the consideration while echocardiographic measurements are analyzed.
KEYWORDS : adolescent echocardiography values, left ventricular dimension, left ventricular ejection fraction