Reliability of electronic versus manual wound measurement techniques

Area of Science:

• Wound care research
• Medical device evaluation
• Biomedical engineering

Background:

• Accurate wound measurement is crucial for effective treatment and healing assessment.
• Traditional linear measurement methods may lack precision.
• Electronic wound measurement systems offer potential for improved accuracy.

Purpose of the Study:

• To compare the accuracy and reliability of linear, Visitrak, and VeV MD wound measurement techniques.
• To evaluate interobserver and intraobserver variability in wound area measurements.
• To determine the most accurate and reliable method for assessing wound size.

Main Methods:

• Forty 2D paper wounds of varying sizes were measured by four blinded observers in two sessions.
• Measurements were taken using linear, Visitrak, and VeV MD techniques.
• Mixed linear models and root mean square error (RMSE) were used to analyze variability and accuracy.

Main Results:

• Intraobserver variation was generally not significant across techniques.
• Significant interobserver variation was observed for all measurement methods.
• Linear measurements exhibited the highest RMSE, indicating lower accuracy.
• VeV and Visitrak showed comparable accuracy, with VeV slightly better for large wounds and Visitrak for small wounds.

Conclusions:

• Electronic devices (VeV, Visitrak) are superior to manual linear techniques for valid wound area measurements.
• Consistent use by the same observer is essential for reliable repeated measurements with any technique.
• VeV and Visitrak offer improved accuracy over linear methods, with specific advantages for different wound sizes.