Term
| Importance of maintaining a MOIST wound env't (4) |
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Definition
1. cells for repair (macrophage and fibroblasts) are present in tissue fluids
2. epidermal cell migration is facilitated on a moist surface
3. initial inflammatory response is prolonged while cleaning up desiccated tissue if wound base becomes dried
4. normal electrical conductivity of moist wound is dec. if wound base is dried |
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Term
| Goals of dressing choice (2 questions to ask) |
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Definition
1. absorb excess fluid OR keep wound base moist?
2. protect wound base or debride wound base? |
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Term
| Disadvantages to using gauze dressings (6) |
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Definition
1. allows wound to dry out
2. trauma to wound bed w/ removal of gauze
3. permeable to bacteria if wet to the outside
4. foreign debris of gauze if gauze is cut to size or too small
5. increased pain w/ removal
6. time-consuming to put on/take off |
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Term
| Advantages of using gauze dressings (2) |
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Definition
1. effective for non-selective debridement
2. cost appropriate for heavily draining wound that requires frequent changes |
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Term
| Different topical agents (5) |
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Definition
1. saline solution
2. hydrogel "ointment"-thickened saline sol'tn; use if want to keep wound moist longer so it doesn't dry out as fast
3. Betadine-antibacterial but also cytotoxic to granulation tissue
4. Dakin's sol'tn-antibacterial to staph and strep but also cytotoxic to fibroblasts at conc. >0.5%
5. Silvadene-antibacterial, comfortable, often used on burns, hard to clean off |
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Term
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Definition
| thick so absorbs exudate and occlusive so pathogens can't enter the wound |
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Term
| Calcium alginate dressing definition |
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Definition
| non-adhesive wound dressing used to fill wound deficit and then covered with a secondary dressing; turns gelatinous when wet |
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Term
| Calcium alginate dressing characteristics (5) |
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Definition
1. high absorptive capacity to remove excess exudates
2. allows removal w/o trauma to wound bed
3. maintains a moist wound env't that allows gaseous exchange
4. may apply to sinus tracts
5. dec. dressing changes to once every 2-4 days |
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Term
| Purpose of occlusive dressings |
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Definition
| to produce a microenvironment that supports the body's own healing process |
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Term
| Advantages of occlusive dressings (7) |
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Definition
1. dec. trauma to wound bed w/ removal
2. maintains a moist wound env't
3. impermeable to bacteria
4. absorbs greater amts of exudates
5. less labor-intensive
6. less painful, more comfortable, improved pt compliance
7. may be bactericidal |
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Term
| Types of occlusive dressings (3) |
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Definition
1. impermeable hydrocolloids: impermeable to water, bacteria, oxygen; ex. Duoderm and J&J ulcer dressing
2. semipermeable hydrogel sheets: vapor and oxygen permeable but also absorbent; e.g. Vigilon, Transorb
3. VAC dressing (vacuum-assisted closure): ex. Wound-vac |
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Term
| VAC dressing characteristics (4) |
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Definition
1. enhances healing via the mechanical deformation of cells that stimulates cell proliferation and protein synthesis
2. dressing changes done every 48 hrs
3. used on clean, non-infected wounds
4. cut foam to exact shape of wound and pack it in, then saran-wrap over foam for complete occlusion before vacuuming |
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Term
| Impermeable hydrocolloids (e.g. Duoderm and J&J ulcer dressing) characteristics (3) |
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Definition
1. highly absorptive and expands into wound (not sinus tract)
2. may enhance angiogenesis secondary to wound hypoxia
3. maceration may occur |
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