Development of an experimental heterogeneous burn wound model

Area of Science:

• Biomedical Engineering
• Wound Healing Research
• Animal Models

Background:

• Current burn models often create uniform wounds, unlike complex clinical scenarios.
• Heterogeneous burns, common in combat injuries, present significant debridement and treatment challenges.

Purpose of the Study:

• To develop a clinically relevant, heterogeneous porcine burn wound model.
• To simulate the varying severity of burn wounds encountered in practice.

Main Methods:

• Created up to 6 heterogeneous burn wounds (10x10 cm) on 3 anesthetized pigs.
• Applied a 100°C heated plate for 2-20 seconds to create superficial, partial-thickness, and full-thickness burns.
• Collected macroscopic images, punch biopsies, and performed cross-sectional analysis on day 3.

Main Results:

• Histology confirmed heterogeneous burn creation and progression over 3 days.
• Burn depth strongly correlated with application time (e.g., 20s burns reached 1003 µm).
• Laser speckle imaging showed altered blood flow, and 3-day macroscopic imaging revealed infections in some burns.

Conclusions:

• The developed model effectively replicates heterogeneous burn wounds seen clinically.
• This model provides a valuable tool for advancing research in burn treatment strategies.