Skin changes following minor trauma

摘要: Background and Objective Bruises are currently evaluated by visual inspection, little is known about the first phase after injury. The temporal development of fresh injuries must be accurately described to able age bruises in a reliable manner. Color changes bruise caused hemoglobin breakdown products will depend on severity trauma, thus local immune response skin. It therefore important relate nature impact tissue responses. Materials Methods Controlled were inflicted anesthetized domestic pigs. Trauma was induced either pendulum device, or paintballs released using pressurized air. speed projectiles recorded high camera. Biopsies reflection spectra (400–850 nm) collected from normal bruised experiments approved national animal research authority. Results The injury found strongly weight object. Low speed, blunt objects did not cause persistent skin changes. However, deep muscular bleeding could most cases. High light rapidly developing bruise. These fully developed within 15–20 minutes. No hemorrhages observed those White blood cells (neutrophilic granulocytes) biopsies injuries. amount white depended time between collection biopsies. Conclusion Further investigations utilizing larger range object velocities required classify minor traumatic Preliminary results indicate that this can achieved controlled porcine model. Reflectance spectroscopy useful tool study immediate reactions trauma. Lasers Surg. Med. © 2007 Wiley-Liss, Inc.