Why does the wound turn white after using hydrogel dressing?

What is the reason for the whitening of the wound after using hydrocolloid dressing?

Biological dressings can be divided into two categories: artificial biological dressings and allogeneic tissue wound coverings. Common artificial biological dressings are made of collagen, chitosan, hyaluronic acid and other materials, which have hemostatic and procoagulant effects and can induce the proliferation and differentiation of various cells. Allogeneic tissue wound coverings include pig skin, frog skin, fish skin, etc. At present, the United States, Britain, Japan and other countries have commercialized pig skin supply, mainly including glutaraldehyde cross-linked pig skin and irradiated pig skin.


1. The reason why the wound turns white after using hydrocolloid dressing


Hydrocolloids have the ability to absorb wound exudate. After absorbing the exudate, the hydrophilic particles in the dressing can form a gel-like semi-solid substance, attached to the wound base, providing and maintaining a moist environment conducive to wound healing. It is viscous and can form a closed wound surface. A closed healing environment can promote the proliferation of microvessels and the formation of granulation tissue, thereby accelerating wound healing. After the hydrocolloid dressing absorbs the exudate, it will turn into a gel, partially swell and turn white, so pay attention to observe the extent of the dressing absorbing the exudate during use, and replace it in time when the whitened area is close to the edge of the dressing (such as 1 cm). So don't be afraid to see the wound white and swollen, it is a normal phenomenon! Hydrocolloid dressing is simple and convenient to use, and does not need to be replaced frequently. Generally, it needs to be replaced in 3-5 days. At this time, since the dressing absorbs exudate, the viscosity decreases, and it will not cause pain and damage during removal.


Hydrocolloid dressing is a dressing containing gelatinous substances. Its structure is divided into three layers: wound contact surface, polymer matrix and backing. The main components are sodium carboxymethylcellulose, gelatin, pectin, etc., and elastic polymers are added And adhesives, etc., finally form an absorbent, self-adhesive, waterproof dressing, transparent or translucent, biodegradable, and can be used in different wounds and anatomical parts. Hydrocolloid dressing wound healing is not only widely used in clinical wound treatment, but also in daily life.


2. Precautions for hydrocolloid dressing use


Hydrocolloid dressing is thin and elastic, can follow the movement of the skin, body activities are not affected, patients feel comfortable, and the method of using hydrocolloid dressing is simple. Using Sukang hydrocolloid dressing to treat phlebitis compared with magnesium sulfate wet compress improves the efficiency, significantly shortens the course of treatment, reduces the pain of the patient, better improves the function of the affected limb, and restores the patient's ability to work. At the same time, it also increases the reusability of blood vessels, especially for patients who need long-term infusion. And improving the attention and awareness of prevention of phlebitis is the basis of prevention and treatment of phlebitis: prevention is better than cure.


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