Other Types of Dressings
(A) Collagen dressings:
Process of healing requires collagen. Human body has 29 different types of collagen. Collagen dressings are available in the form of powder, cream, and sheet or wafers. Collagen is extracted from rat tendon, bovine skin or pig intestine. Collagen is also available in combinations with alginates, metronidazole, mupirocin, gentamycin and silver sulphadiazine. Collagen dressing should not be used in presence of infection and necrotic tissue. It is not a debriding agent or an antiseptic.
(B) Honey and sugar paste dressings:
Honey is used as a dressing material since 4000 years. It is derived from many floral sources. Manuka honey and pasture honey are two main types honey used for dressing. Similarly sugar paste is also tried by many as dressing material. Honey proves better than sugar paste. The effect is de odorizing, reduces inflammation, edema and exudates, it has some anti-bacterial effect as well.
(C) pH modulating dressings:
Usually the pH of exudates is alkaline. The pH of skin secretion is slightly acidic. By making change in pH, the environment for organism changes, this might add to antiseptic effect. The effect of MMPs reduces with the reduction of pH. In chronic wounds there is high level of MMPs. It is though that reducing the pH from 8 to 4 reduces MMP activity by 80%. Hydrocolloid and certain other dressings have ability to change pH to acidic.
(D) Hyaluronic acid:
It is a natural component of extra cellular matrix; it controls water retention and ionic and molecular diffusion. HA facilitates the growth and movement of fibroblast. It is available as cream, sponge, fibers, and threads. It is also used as a scaffold for fibroblast and keratinocyte culture.
(E) Hemoglobin spray:
Hemoglobin spray is prepared from pig hemoglobin. It is thought to supply oxygen to the wound. It is available in the form of a spray.
(F) Dressings to control malodor:
Many diabetic and non-diabetic wounds are foul smelling because of necrosis and gas forming organisms. Both aerobic and anaerobic bacteria produce offensive odor. If dressings are kept for a longer time, it also smells bad. Maggots infected wounds have a special odor. In addition to frequent change of dressings, charcoal powder, metronidazole gel, some foam dressings and alginate dressings can tackle the malodor.
(G) Local insulin treatment:
Senior surgeons used local insulin injections and dressing for wound healing. It is thought to increase the rate of growth of fibroblast and thereby assist in wound healing.
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