Bioimpedance as a measure of fluids in patients with septic shock. A prospective observational study
Authors' conclusion
In patients with septic shock bioelectrical impedance analysis had no systematic errors or bias, but wide limits of agreement, indicating that the devices have a large and uncorrectable random error.
Study context
- Population
- Adult ICU patients with septic shock
- Participants
- 49 patients
- Exposure
- Agreement of bioelectrical impedance analysis measures: left vs right side, 1 h apart, and between two devices
- Outcome
- Validity of bioelectrical impedance analysis for fluid measures (Bland Altman 95% limits of agreement; correlation with clinical markers of fluids)
Methodological detailssingle-centre
- Single-centre
Main finding
As reported in the abstract
Fluid overload 1 h apart: most narrow 95% limits of agreement (L)
−2.4-2.9
Between devices: same wide limits of agreement; e.g. total body water 95% limits of agreement (L)
−14.8 −16.7
Observational data: associations, not effects.
Original publication
Bioimpedance as a measure of fluids in patients with septic shock. A prospective observational study. Acta Anaesthesiol Scand. Published 18 January 2023. doi:10.
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