Understanding Alginate Wound Dressings and Hydrophilic Fibrous Dressings

Introduction to alginate wound dressings or calcium alginate dressings

The composition of alginate wound dressings or calcium alginate dressings: extracted from seaweed, the main component is alginate, which is processed into calcium and sodium salt synthesis. It is a soft non-woven fiber that can absorb 17-20 times its own weight of exudate. The sodium ion in the exudate exchanges with the calcium ion in the dressing to reach a balanced state, which will form a gel on the wound surface and produce hemostatic effect. It is divided into sheet and strip types. Alginate wound dressings are suitable for shallow or full layer wounds, wounds with medium to large amounts of exudate, deep wounds, bleeding wounds, and infected wounds.

The advantages of alginate wound dressing: non-toxic, non-allergenic, and completely compatible. It can promote blood coagulation, has high absorption capacity, can form a gel, dissolve necrotic tissue, promote autolytic debridement, and can be cut at will, conforming to the contour of the wound bed and easily taken out.

Precautions for alginate wound dressings: the cavity wounds should be filled 80% full because it will expand after absorbing exudate. If it is stuffed too tightly, it will block the outlet and cause poor drainage, which may affect the growth of the wound. Soft alginate and calcium alginate should not be filled in deep cavities, which may be difficult to remove. Use some dense alginate and calcium alginate as much as possible. The dressing should not exceed the range of the wound bed, covering the surrounding skin, because the absorbent dressing will cause skin soaking.

Introduction to hydrophilic fiber dressings

The composition of hydrophilic fiber dressings: soft fibers made of carboxymethyl cellulose sodium, which has a high absorption capacity, can form a gel after absorbing exudate, and provides a moist healing environment. Hydrophilic fiber dressings are suitable for wounds with medium to large amounts of exudate, partial dermal wounds, infected wounds, and sinus wounds.

The advantages of hydrophilic fiber dressings: vertically absorbent, with very little skin soaking around, the fiber is denser than alginate and calcium alginate, with stronger absorbency of exudate, and can be taken out in one piece when filling. It can promote necrotic tissue liquefaction and granulation tissue growth.

Introduction to high osmolarity salt dressings (Meisalt)

The composition of high osmolarity salt dressings: non-woven fabric dressings containing high osmolarity sodium chloride, which is not a sterilizing dressing, but a bacteriostatic one that dehydrates bacteria. There are two types, strip and sheet. High osmolarity salt dressings are suitable for patients with postoperative fat liquefaction, wounds with granulation edema, and wounds with a lot of local necrosis after postoperative infection.

The advantages of high osmolarity salt dressings: bacteriostatic, dehydrating the edema granulation. The texture is tough, and Meisalt can be taken out in one piece for narrow and deep wounds. It can drain, dissolve necrotic tissue, and promote debridement. Record the number of placements of high osmolarity salt dressings to prevent omissions.

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