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Evaluation of Fluid Overload by Bioelectrical Impedance Vectorial Analysis
Published on: August 17, 2022
The bioelectrical impedance vector migration in healthy infants.
Carianne L'Abée1, Petra H Poorts-Borger, Erna H G M Gorter
1Department of Pediatrics, University Medical Center Groningen, University of Groningen, The Netherlands. c.abee@bkk.umcg.nl
Clinical Nutrition (Edinburgh, Scotland)
|August 29, 2009
Summary
Bioelectrical impedance vector analysis reveals significant changes in infant body composition during the first year of life. New reference intervals for two-month-old infants provide valuable insights for monitoring healthy growth and preventing childhood obesity.
Area of Science:
- Pediatric physiology
- Biomedical engineering
- Body composition analysis
Background:
- Early detection of excess body fat in children is crucial for preventing obesity.
- Bioelectrical impedance vector analysis (BIVA) offers insights into body hydration and soft tissue mass.
Purpose of the Study:
- To investigate bioelectrical impedance vector analysis in healthy infants.
- To establish reference intervals for BIVA parameters in infants.
Main Methods:
- Utilized 50kHz frequency bioelectrical impedance analysis for repeated measurements of reactance and resistance in 113 infants (51 boys, 62 girls).
- Performed bivariate vector analysis, standardizing resistance (R) and reactance (Xc) by height (H).
- Plotted 95% confidence intervals and 50%, 75%, and 95% tolerance intervals for impedance vectors across different infant age groups.
Main Results:
- Observed significant vector migration during infancy, with notable changes in Xc/H (8.50 ohm/m) and R/H (-95.68 ohm/m) between two months and 8–12 months (p=0.0001).
- Presented bivariate reference tolerance intervals for impedance vectors specific to healthy two-month-old infants.
Conclusions:
- Demonstrated significant impedance vector migration throughout the first year of life in healthy infants.
- Developed new reference tolerance intervals for the second month of life, aiding in infant body composition assessment.
