Engineering an Optimal Dressing to Prevent Pressure Ulcers

Overview

Pressure ulcers affect 2.5+ million people annually in the U.S., contributing to 60,000+ deaths and $26+ billion in healthcare costs. Current prevention methods remain inadequate. Preventive dressings are a promising approach, but prior designs focused on single-layer or single-material designs. This study developed and optimized a novel 5-layer composite dressing. Three material options per layer yielded 243 combinations, requiring testing 2,916 dressings across 4 conditions (pressure, shear, moisture, and adhesion) with 3 trials each (1,458 hours). The Taguchi Design of Experiments (DOE) method reduced testing to 324 dressings (162 hours). Results revealed an optimal design: silicone mesh wound contact, alginate absorbent core, non-adherent gauze spacer, surgical paper tape adhesive, and foil backing. ANOVA identified the wound contact layer (47.9%; F=15.3, p<0.001) and absorbent layer (17.1%; F=5.5, p=0.016) as statistically significant drivers of performance variation. Separately, a Python-trained machine learning ridge regression model indicated interlayer interactions explained 17.3% of performance variability. Validation testing confirmed superior performance versus 4 commercial dressings, exceeding the top-performing comparator with statistically significant improvements in pressure resistance (81.3%; t=-7.65, p<0.001), shear resistance (27.0%; t=2.37, p=0.02), and moisture regulation (32.8%; t=-5.92, p<0.001). The optimized low-cost dressing designed in the study has the potential to transform the pressure ulcer prevention paradigm.

Awards (1)

• Third Award of $1,200 $1,200

Competition history

• ISEF 2026 Translational Medical Science · Entry TMED056

Resources

• ISEF abstract page ↗

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