Bioelectrical impedance analysis during deresuscitation: correlation and agreement with cumulative fluid balance in ICU patients
Authors' conclusion
BIA hydration-derived variables are significantly correlated with cumulative fluid balance but the large limits of agreements exclude interchangeability of the measures.
Study context
- Population
- Critically-ill adults with fluid overload and continuous RRT undergoing deresuscitation with net ultrafiltration61 couples of measurements analysed
- Participants
- 30 adults
- Exposure
- Bioelectrical impedance analysis (BIA)-derived hydration variables vs cumulative fluid balance
- Outcome
- Correlation and agreement between changes in cumulative fluid balance and BIA-derived hydration variables
- Follow-up
- Within 5 days following initiation of deresuscitation
Methodological detailshistorical cohort
- Historical cohort
Main finding
As reported in the abstract
Correlation with cumulative fluid balance
Total body water, Spearman rho
0.63
Extracellular water, Spearman rho
0.68
Intracellular water, Spearman rho
0.67
Observational data: associations, not effects.
Further findings
Cumulative fluid balance after deresuscitation
- Mean (± SD) cumulative fluid balance, L
- - 4.2 ± 3.8
- Significant decrease in extra- and intracellular water, independent of weight inputted in BIA device (P < 0.001)
Original publication
Bioelectrical impedance analysis during deresuscitation: correlation and agreement with cumulative fluid balance in ICU patients. J Clin Monit Comput. Published 5 October 2022. doi:10.
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