According to the different pathophysiological and clinical characteristics of the wound healing process, different advanced dressings are used to promote wound healing.
1. Protect the wound from microbial invasion.
2. Keep the wound warm and moist.
3. Accelerate the production of multiple enzymes, increase the activation capacity of growth factors, and accelerate wound healing.
4. Improve local microcirculation and "awaken" the self-cleaning ability of chronic wounds.
5. A variety of cells are activated in a humid environment, which can kill other microorganisms in the wound.
6. Elevated carbon dioxide on the wound surface can accelerate the formation of new blood vessels and granulation tissue.
7. A moist gel will form on the wound to protect the granulation tissue and relieve pain.
8. Speed up automatic debridement and help the formation of granulation and epidermis.
9. Reduce the pressure, friction and shear force on the wound and improve blood supply.
10. No scabs, enhanced epithelial cell division, easy migration, and shorten the healing process.
Factors affecting wound healing
1. Improper wound treatment: lack of basic knowledge of wound care and correct use of wound dressings.
2. Wound humidity: Cells, enzymes and growth factors cannot be activated in a dry environment. When they are in a humid environment, their activity will increase and wound healing will speed up.
3. Wound temperature: Under normal body temperature, the cells and enzymes in the wound can be optimally activated. Studies have shown that when the wound temperature is 2°C lower than the body temperature, the activation capacity of cells and enzymes will decrease significantly.
4. Insufficient blood supply: changes in pressure, friction, and shear force can cause inflammation of small blood vessels, formation of thrombus, and affect wound healing speed.
5. Wound infection: Wound infection can cause tissue cell necrosis and affect the speed of wound healing.
6. Scab formation: The formation of scab will affect the metabolism of the wound and the migration of the epithelium.
7. Pain: Wound pain can cause vasoconstriction, thereby reducing oxygen supply and affecting the remodeling of vascular tissue.