2913576
Description
Flashcards by jenny schneider, updated more than 1 year ago
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Created by jenny schneider
almost 9 years ago
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| Question | Answer |
| How do a passive/inert dressing and an active dressing differ? | active dressings promote healing by maintaining a moist wound environment. A passive/inert dressing is used on simple low exudate superficial wounds or as a secondary dressing |
| What is a primary dressing and what is a secondary dressing? | primary dressings are placed directly on wound while a secondary dressing is used to cover a primary dressing |
| what type of wound is a passive dressing often used on? | minor superficial wound |
| what are gauze products used for in wound care? | cleaning wounds primary dressing for minor wounds wet dressings secondary dressings |
| what are some disadvantages of gauze dressings? | can allow wound to dry can shed fibres into wound and contaminate wound can adhere to wound surface if used as primary dressing (trauma on removing) are permeable to bacteria |
| what can non-woven fixation sheets be used for? | used directly on minor wounds eg minor dressing for gravel rah wounds or may also be used as a secondary dressing |
| Describe the design of non-adherent dressings | they have a non-stick inner film layer absorbent pad hydrophobic backing layer |
| what are non-adherent dressing used for? | low to moderate absorption dressings- primary dressing for minor or low exudate superficial wounds; can also be sued as island dressing when attached to adhesive secondary dressing |
| what are some advantages of non-adherent dressings? | low wound adherence to low exudate wounds some island dressings with non-adherent pad are waterproof |
| what are some disadvantages of non-adherent dressings? | wound may dry out there is still a risk of adherence causing trauma when removed if used as primary dressing should not be used on dry wounds products may vary in absorbency |
| what are non-absorbent pads used for? | clean and sutured wounds abrasions and lacerations minor burns |
| Describe design of paraffin gauze (tulle) dressings | piece of woven cotton or viscose impregnated with yellow or white soft paraffin |
| what are paraffin gauze dressings used for? | minor burns superficial wounds |
| what are advantages and disadvantages of paraffin gauze drsssings? | advantages: low adhesion and provide moist environment disadvantages: permeable to bacteria, granulating tissue may grow through mesh; waterproof paraffin film can macerate some wounds; requires a secondary dressing; not absorbent |
| describe design of film dressing | these are transparent, semi-permeable adhesive films that are permeable to gas and water vapour but impermeable to micro-organisms |
| what are common uses for film dressings? | manage minor burns manage minor injuries ( abrasions, scalds) protective layer around IV catheters secondary dressings used to prevent/treat superficial pressure areas |
| what are advantages of film dressings? | waterproof; gas/vapour permeable flexible transparent provide protection from friction/microbes reduce pain allow easy inspection of wound |
| what are disadvantages of film dressings? | exudate may pool under film may be difficult to apply removal may cause trauma to wound or frail skin replace if there is leaking exudate |
| True or False: film dressings are transparent polyurethane films and are used on superficial wounds and as primary dressing over sutures | True |
| True or False Gauze and lint dressings and swabs can shed fibres that can contaminate a wound | True |
| How do Foam dressings work? | these absorb exudate and provide a moist environment, they are protective and cushioning |
| describe the general design of a foam dressing | breathable waterproof film absorbent polyurethane foam layer perforated non-adherent film that goes on surface of wound |
| Should foam dressings be used on dry wounds? | No |
| which of the following is not a role of a wound dressing? to allow wound to dry out to absorb wound exudate to promote a healing environment to maintain wound bed temperature to protectefrom trauma and contamination | all are roles EXCEPT allowing wound to dry out |
| Describe the design of a hydro-active dressing | consist of a polyurethane gel matrix and a waterproof top player |
| True or False: hydroactive dressings can absorb large amount of exudate | True |
| True or False: Hydroactive dressings differ from hydrocolloid dressings in that they do not produce a gel | True |
| True or False: Hydro active dressings absorb a large amount of exudate and swell | True |
| Describe the design of a hydrocolloid dressing | self-adhering wafer type dressing with hydrophilic surface particles (bound to a hydrophobic polymer)- they absorb exudate from wound to form gel |
| what type of wound would a hydrocolloid dressings be used on? | light to moderate exudate present, sloughy wounds, leg ulcers, pressure ulcers |
| What are advantages of hydrocolloid dressings? | conform to wound reduce pain by keeping nerve ends moist clean and debride wound by autolysis protective can remain in place for several days |
| What are disadvantages of hydrocolloid dressings? | edges may roll and need taping the gel formed can be confused with slough or pus may cause hypergranulation with prolonged use |
| what are two types of hydrogels? | sheet hydrogels amorphous hydrogels |
| describe design of sheet hydrogel | inert matrix of insoluble polymers-water donating-transparent solid gel sheet covered with semi-permeable outer layer |
| do hydrogel sheet dressing contain a lot of water? | yes about 60% |
| what are amorphous hydrogels sued for? | dry wounds, chicken pox and shingle rashes, sunburn, simple scalds, minor burns |
| What are alginate dressings made from | derived from alginic acid found naturally in brown seaweed; alginates have complex structure made from two uronic acids-guluronic acid and mannuronic acid |
| How do alginate dressings work? | when placed on exudating wound, the calcium ions in alginate exchange with sodium ions in wound fluid to form a hydrophilic gel this provides a moist environment and is highly absorbent, conformable, protective, haemostatic and non-adherent |
| what are some advantages of alginate dressings? | non-allergenic relieve pain some forms pack into cavities |
| what are some disadvantages of alginate dressings? | gel may be confused with slough, pus secondary dressing required |
| How do hydrofibre dressings work? | based on hydrocolloid technology- hydrofibres made of non-woven sodium carboxymethylcellulose spun into fibres and then into sheets and ribbon dressings- they absorb exudate and form gels but do not have haemostatic properties of alginates |
| what would a dressing which contained charcoal be used for? | malodorous wound (wound with bad smell) |
| why might a dressing contain silver? | silver is a broad spectrum antimicrobial agent |
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