Comparison of 2 wound volume measurement methods

Area of Science:

• Biomedical Engineering
• Medical Measurement
• Wound Care Technology

Background:

• Accurate wound volume measurement is crucial for effective treatment monitoring.
• Existing methods like the Kundin device and stereophotogrammetry require comparative analysis for reliability and accuracy.
• Standardized wound models are essential for objective evaluation of measurement techniques.

Purpose of the Study:

• To compare the accuracy, bias, and reliability of the Kundin device and stereophotogrammetry for wound volume measurement.
• To assess the performance of these techniques on different wound shapes (L-shaped and pear-shaped).

Main Methods:

• Utilized L-shaped and pear-shaped plaster of paris wound models.
• Employed 24 raters (primarily registered nurses) to measure wound volumes using both the Kundin device and stereophotogrammetry.
• Assessed interrater and intrarater reliability, bias, and standard error of measurement for each technique.

Main Results:

• Stereophotogrammetry was the least biased and most accurate technique, exhibiting the smallest standard error of measurement.
• Interrater reliability for average ratings was identical (0.98) for both methods; stereophotogrammetry showed slightly higher reliability for single ratings.
• Intrarater reliability varied by wound shape, with the Kundin device showing higher reliability on the pear-shaped wound.

Conclusions:

• Both stereophotogrammetry and the Kundin device offer acceptable accuracy for wound volume measurement.
• Stereophotogrammetry is identified as the more accurate method with broader clinical applications.
• Further research may explore the integration of stereophotogrammetry into routine clinical practice for enhanced wound assessment.