alginate dressings

alginate dressings

hydrophilic wound dressings that absorb large volumes of wound exudate and maintain a moist wound interface without tissue maceration; indicated for highly exuding wounds (see Table 1)
Table 1: Types of wound dressings and indications for their use
Dressing TypeFeaturesIndicated Use
Primary Wound-Dressing Films
Semi-permeable adhesive filmNon-absorbent
Non-adherent to wound surface
Gas and water vapour permeable, but impermeable to water
Non-shedding
Transparent, allowing observation of wound
Low exudating wounds
Perforated film, absorbentLow adherence (absorbent pad covered by perforated film)
Low exudating wounds
Low-adherent Wound Contact Layers
Unmedicated viscoseNon-absorbent; non-sheddingNon-adherent primary dressing
Medicated tulleLow-adherent polyethylene glycol or paraffin impregnated tulle incorporating an antiseptic (e.g.: chlorhexidine gluconate; iodine)Topical antisepsis
Semi-permeable hydrogelsHydrophilic polymers in either sheet or amorphous formulations
Highly absorbent
Gas permeable, but impermeable to water
Dressing surface may dry out, and thus requires rehydration with saline
Removal of slough
Rehydration of dry, necrotic tissue to allow its later sharp debridement
Absorption of heavy exudation
Carrier of topical antimicrobials (e.g.: metronidazole)
HydrocolloidsInteractive (form a gel when in contact with wound surface)
Usually formulated with an occlusive, water-repellent backing
Promote an acidic and hypoxic wound environment, and facilitates neoangiogenesis
Not suitable for infected wounds
Maintain a moist, temperature controlled wound environment
AlginatesSeaweed derivatives which form a hydrophilic gel in contact with the wound surface
Require irrigation to remove from wound surface
Absorption of exudation
Moisten with saline before application
Polyurethane foamsSmooth low-adherent wound contact layer backed with hydrophobic foam
Highly gas-permeable
Maintain a moist wound environment and good thermal insulation
Absorption of moderate exudation
Outer layer prevents 'strike through'
Silver agentsSilver ions impregnated into dressing
Antibacterial action
Topical antisepsis, including resistant forms
References in periodicals archive ?
Prospective randomized controlled study of HydrofiberA(r) dressing containing ionic silver or calcium alginate dressings in non-ischaemic diabetic foot ulcers.
Alginate dressings are biodegradable, reduce pain, and keep the tissues moist during healing.
Some of the patients were dropped from study as they developed high exudate from wound and shifted to alginate dressings.
Calcium alginate dressings have been in use for around 3 decades and have been used extensively in skin wounds and this study compares the efficacy of these with povidone-iodine wound dressings.
The codes allow healthcare providers to bill for the alginate dressings, effective immediately.
Previous wound treatments had included gauze, silver, and alginate dressings.
Alginate dressings can be effective for wounds with a moderate-to-large amount of drainage.
While alginate dressings have advanced wound care worldwide, it is the combination of alginate with antibacterial Active UMF[R] Manuka Honey in the ApiNate[R] dressings that has the ability to offer all the benefits of these remarkable fibres and makes ApiNate[R] so unique and universal.
Calcium alginate dressings provide a significant improvement in healing split skin graft donor sites (12).
Some of the commonly used combination dressings are silver alginate dressings, silver collagen dressings, collagen hydrocolloid dressings, and collagen and foam dressings.
Calcium alginate dressings are indicated for highly exudative wounds, as they will absorb up to 20 times their normal weight.