What is the function of a band-aid?

What is a band-aid? Let's have a look!

1. Band-aid, also known as "hemostatic patch", has the functions of hemostasis and wound protection. It consists of a long adhesive tape with a small piece of gauze soaked in medicine in the middle. Due to the limitation of its structure, the wound possibility patch can only be used for emergency treatment of small wounds to temporarily stop bleeding. The role of protecting the wound.

2. Band-aid can only be used for small wounds with shallow surface, clean and tidy, which do not need to be sutured, so as to temporarily stop bleeding and protect the wound surface. However, due to the poor water absorption and permeability of the band-aid, it is not conducive to the drainage of wound secretions, but is conducive to the growth and reproduction of bacteria, making the wound and the skin around the wound look white and soft, leading to secondary infection, so the band-aid should not be used for too long or too wet. If the wound is found to be hot, painful and swollen after 24 hours of use, it should be considered that the wound may be infected and should be disinfected and treated in the hospital immediately.

Knowledge expansion

Band-AIDS use common sense.

1, after being bitten by animals (such as cats and dogs), you can't wrap it with a band-aid. Wash the wound with soapy water several times first, then disinfect the wound with iodine and alcohol to expose it, and inject rabies vaccine.

2, serious trauma, wound pollution, should go to the hospital for treatment. Don't use a band-aid until the wound is debrided. You can't use a band-aid for contaminated or infected wounds or wounds with secretions or pus.

3. Deep and narrow wounds, such as nails and knife wounds. You can't wrap it with a band-aid. The wound should be exposed after hemostasis to prevent tetanus toxoid from infecting the wound. If necessary, tetanus serum should be injected under the guidance of a doctor.

4. You can't stick a band-aid to the ulceration and exudation after burns, so as to avoid secondary infection caused by poor drainage of secretions.

If the band-aid stuck on the wound is soaked by water, it should be replaced immediately. This is especially important outdoors. Because the band-aid absorbs water well, if you don't pay attention, the wound is equivalent to soaking in water directly, but it becomes a hotbed of bacteria. Although there is a waterproof band-aid on the market now, the effect is not obvious, especially on the hand joints that are most likely to be injured in outdoor activities, and the waterproof performance cannot be fully reflected.