Wound dressings – a review

Wound dressings – a review

December 2015 | Selvaraj Dhivya, Viswanadha Vijaya Padma, Elango Santhini
This review article discusses the history, types, and functions of wound dressings, emphasizing their role in promoting wound healing. Wound healing is a complex process involving four phases: coagulation and haemostasis, inflammatory, proliferation, and maturation. The selection of appropriate dressing materials is crucial for effective healing, as it depends on the wound type, its pathological conditions, and the dressing material. Traditional wound dressings, such as gauze, bandages, and plasters, are dry and used for primary or secondary wound protection. However, they fail to provide a moist environment necessary for healing and have been largely replaced by modern dressings. Modern dressings are designed to maintain a moist environment, promote healing, and provide protection against infection. They are classified into passive, interactive, and bioactive types. Semi-permeable film dressings allow water vapor, oxygen, and carbon dioxide exchange while protecting against bacterial penetration. Foam dressings are effective for wounds with moderate to heavy exudates and are used for lower leg ulcers and granulating wounds. Hydrogel dressings are suitable for dry chronic wounds and provide a moist environment for healing. Hydrocolloid dressings are used for light to moderately exudating wounds and are non-irritating. Alginate dressings are effective for wounds with moderate to heavy drainage but require secondary dressings to prevent dehydration. Bioactive dressings are made from biomaterials that play an active role in healing, such as collagen, hyaluronic acid, chitosan, and alginate. Tissue-engineered skin substitutes are used for severe wounds, such as diabetic foot ulcers and venous leg ulcers. Medicated dressings incorporate drugs to remove necrotic tissue, prevent infection, and promote tissue regeneration. Composite dressings are versatile and used for both partial and full thickness wounds, consisting of multiple layers with distinct physiological functions. Despite the availability of over 3000 types of dressings, there is no single product that effectively heals chronic wounds like venous leg ulcers, diabetic wounds, and pressure ulcers. Developing dressings that address the major factors interfering with normal healing is essential for improving patient outcomes.This review article discusses the history, types, and functions of wound dressings, emphasizing their role in promoting wound healing. Wound healing is a complex process involving four phases: coagulation and haemostasis, inflammatory, proliferation, and maturation. The selection of appropriate dressing materials is crucial for effective healing, as it depends on the wound type, its pathological conditions, and the dressing material. Traditional wound dressings, such as gauze, bandages, and plasters, are dry and used for primary or secondary wound protection. However, they fail to provide a moist environment necessary for healing and have been largely replaced by modern dressings. Modern dressings are designed to maintain a moist environment, promote healing, and provide protection against infection. They are classified into passive, interactive, and bioactive types. Semi-permeable film dressings allow water vapor, oxygen, and carbon dioxide exchange while protecting against bacterial penetration. Foam dressings are effective for wounds with moderate to heavy exudates and are used for lower leg ulcers and granulating wounds. Hydrogel dressings are suitable for dry chronic wounds and provide a moist environment for healing. Hydrocolloid dressings are used for light to moderately exudating wounds and are non-irritating. Alginate dressings are effective for wounds with moderate to heavy drainage but require secondary dressings to prevent dehydration. Bioactive dressings are made from biomaterials that play an active role in healing, such as collagen, hyaluronic acid, chitosan, and alginate. Tissue-engineered skin substitutes are used for severe wounds, such as diabetic foot ulcers and venous leg ulcers. Medicated dressings incorporate drugs to remove necrotic tissue, prevent infection, and promote tissue regeneration. Composite dressings are versatile and used for both partial and full thickness wounds, consisting of multiple layers with distinct physiological functions. Despite the availability of over 3000 types of dressings, there is no single product that effectively heals chronic wounds like venous leg ulcers, diabetic wounds, and pressure ulcers. Developing dressings that address the major factors interfering with normal healing is essential for improving patient outcomes.
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