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Alginates and Hydrofibres
photos: Riepe, Bültemann
 alginat tamponade |
 alginat may be plucked to fit the wound |
 alginat may be covered only by foil |
DescriptionAlginates- consist of fibres of brown algae (Phaeophyceae), - have a white-yellowish colour (in German compared with the "hair of an angel") - donate calcium ions, take up sodium ions and transform to a gel by binding water - absorb cellular detritus and bacteria - have a potentiating effect on coagulation by platelet activation Hydrofibres - consist of sodium-carboxy-methyl-cellulose - transform into a stabile gel - take up water vertically (edge protection) Indications- slough covered, moderately exsuding wounds- small cavity wounds - split skin donor sites Limitations- dry wounds- exposed tendons and bones (danger of dehydration) - infection (s. antiseptics) and PAD grade IV - deep wound cavities and fistula (danger of loss of material) Notes- alginates may be plucked or cut- wound cavities should be filled loosely - alginates should not reach over the edge of the wound (except hydrofibres) - when changing the dressing remove the alginate completely, rinse it thoroughly out of cavities - painless removal Covering- low exuadtion: alginate and foil- moderate exudation: alginate, gauze or absorbent wound pads and foil - heavy exudation: alginate and foam (caution: gel may occlude the pores of dressings, retain uptake of water and lead to maceration of the wound edge) Change of dressing- Exudation phase: every 1 to 3 days- Granulation phase: up to 7 days Link to producers
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