Bioimpedance Spectroscopy Is a Valid and Reliable Measure of Edema Following Hand Burn Injury (Part 1-Method...

Area of Science:

• Biomedical Engineering
• Clinical Assessment
• Burn Care Research

Background:

• Assessing swelling (edema) in hand burn injuries is challenging due to wounds, dressings, pain, and limited mobility.
• Objective, sensitive measures for hand edema are lacking in clinical practice.
• Bioimpedance spectroscopy (BIS) has shown promise for measuring limb edema and wound healing changes.

Purpose of the Study:

• To evaluate the reliability and validity of BIS for quantifying edema specifically in acute hand burn injuries.
• To establish BIS as a sensitive and objective tool for hand burn edema assessment.

Main Methods:

• A novel application of BIS was used to measure hand edema in 100 patients with hand burns.
• Water displacement volumetry (WDV) was used in parallel for comparison.
• Mixed-effects regression models analyzed paired repeated measures from 195 hands using four electrode configurations.

Main Results:

• BIS demonstrated high reliability for hand edema measurement (Intraclass Correlation Coefficient 0.995–0.999).
• BIS showed high sensitivity with a Minimum Detectable Difference of 0.74–3.86 Ω.
• A strong negative correlation was found between BIS and WDV (Pearson's r = -0.831 to -0.798, P < .001).

Conclusions:

• BIS is a highly reliable and sensitive method for assessing edema in acute hand burn injuries.
• BIS provides an objective and valid alternative to traditional methods for hand burn edema assessment.
• This technique can aid in more precise clinical management and research of hand burn injuries.