Wound Dressings (Lab Info--Teri)

Question 1

Alginates

Answer 1

• made from seaweed
• sheets/ropes
• absorb exudate
• infection
• non-adherent
• require secondary dressing
• hydrofibers (alternative; absorb 30% more)

Question 2

Bioengineered Tissue

Answer 2

• Apligraph: from neonatal foreskin in bovine collagen matrix
• dermagraft: from human fibroblasts (cryopreserved dermal substitute)
• proteins/cytokines stimulate wound healing
• only on clean, debrided, non-infected wound
• diabetic ulcers

Question 3

Collagens

Answer 3

• cowhid/tendon, chicken tendon
• recognized by tissue cells
• accelerate wound repair by providing collagen matrix for cellular migration

Question 4

Contact Layer Dressing

Answer 4

• fenestrated: drainage out, medications in
• cling to skin w/o adhesive
• gauze pads w/ non-adherent surface

Question 5

Transparent Film

Answer 5

• won’t stick to moist wound bed
• superficial wounds
• impermeable to water and bacteria
• autolytic debridement
• protect from shear

Question 6

Foam Dressing

Answer 6

-heavily exuding wound/chronic wound
-wick away moisture
-beneath compressive dressing
-autolysis
0thermal and protective properties
-can use with infection

Question 7

Gauze Dressings

Answer 7

• wick and absorb drainage

- may stick to wound bed as it dries

Question 8

Hydrocolloid Dressings

Answer 8

• adherent
• difficult anatomical areas (elbow, heel, ear)
• chronic wounds and burns
• autolytic debridement
• thermal protection
• not with infection

Question 9

Hydrogels

Answer 9

• maintain moisture
• not good bacterial barrier
• cooling effect for pain/anti-inflam
• partial thickness burns, donor sites, chronic wounds
• non-adherent (need 2* dressing)
• autolytic debridement
• potential for maceration

Question 10

Anti-microbial dressings

Answer 10

• silver: 3-7 days/dressing (MRSA, VRE)
• cadexomer iodine: 72 hours, (MRSA, VRE)
• Cytotoxic topical antimicrobials (cytotoxic to all cells including healthy cells)

Question 11

Skin/Wound Cleansers

Answer 11

• ingredients help loosen debris and foreign matter from wounds
• not harmful to good tissue

Question 12

Skin Sealants/Protective Barriers

Answer 12

• protect skin surface with sealant film
• provides barrier against urine/stool
• protective for intact skin