The main component of alginate medical dressing is calcium alginate, which is a natural cellulose extracted from seaweed. It is mainly used for the care of superficial wounds. Covering the wound surface can effectively absorb excess wound exudate and form a soft mesh. Gel to maintain a good moist environment and promote wound repair and healing. Alginate ag dressing has good hydrophilicity and biocompatibility, and when applied to superficial wounds, it can help wounds inhibit bacteria, stop bleeding, and promote healing. It can also be used in small, deep sinus wounds to facilitate wound drainage and drainage. However, it is not suitable for wounds with a depth of more than 0.5cm or wounds with cavities, cavities, and pus cavities under the skin, because they cannot touch the inside of the wound to play a role.
I. Precautions for using alginate ag dressing
The use of alginate has strict requirements on the wound, and the wound should be clean and free of slough and necrosis before use. If black scab, slough, and thick pus are present, debride the wound to keep it flat and clean before covering the wound with alginate. Wash the wound with saline before use, and dry the surface of the wound with a cotton ball. Cut the dressing according to the size of the wound, gently cover the wound surface, make the alginate dressing material fit with the bottom of the wound, and then wrap it with sterile gauze to fix it. At the beginning of wound repair, the alginate ag dressing should be changed once a day, and when the wound inflammation is controlled, the exudate is reduced, and granulation begins to form, the frequency of dressing changes should be reduced. When the alginate ag dressing is soaked by the exudate, it means that its water absorption is basically saturated and needs to be replaced in time. Generally speaking, the replacement of the dressing should not exceed seven days.
Alginate ag dressing has obvious advantages in the early stage of wound repair, but it plays a limited role in the growth stage of granulation, especially in the repair of chronic and difficult wounds. In addition to using alginate ag dressing, ointment can also be applied to promote wounds. For example, bedsore wounds are commonly used. It is a commonly used regeneration cream for long-term unhealed wounds such as old rotten legs, diabetic feet, chronic ulcers, etc.
II. The help of alginate ag dressing on wounds is mainly reflected in the following aspects
1. Promote wound healing
Compared with other dressing products, alginate has strong water absorption and can absorb a large amount of wound exudate to form a moist gel state, so as to maintain good moisturizing and hypoxic characteristics of the wound. In this environment, epidermal cells can swim and proliferate freely, and the growth rate of granulation and new epithelium is also accelerated.
2. Help the wound stop bleeding
For the bleeding symptoms of fresh wounds, after covering with alginate ag dressing, calcium ions can be released on the wound surface, which can promote the formation of prothrombin activator, thereby accelerating the blood coagulation process.
3. Isolate external germs
After the skin is ruptured, germs can easily invade the inside of the wound, and after covering with alginate ag dressing, it can effectively isolate external germs and prevent germs from invading the wound. Infection occurs.
4. Will not stick to the wound
The alginate ag dressing has good affinity, can be easily removed after absorbing water, does not adhere to the wound, and has no pain during dressing change. Compared with traditional gauze, although alginate is more expensive, it can shorten the time of wound repair, reduce the local inflammatory response of the wound, and improve the quality of wound healing in many ways. Overall, it can reduce the pain of patients. Its application prospects are relatively broad.
