Wound Care Certification Exam Wound Care Certification Wound Bed Preparation Techniques 3 — Questions and Answers
Question 1: Which pH range is considered optimal for wound healing and proteolytic enzyme activity in a healing wound bed?
- pH 3.0–4.5
- pH 5.5–6.5 (Correct answer)
- pH 7.0–8.0
- pH 8.5–9.5
Correct answer: pH 5.5–6.5
A slightly acidic wound pH of 5.5–6.5 supports optimal healing by promoting oxygen release and inhibiting bacterial growth.
Question 2: A diabetic foot ulcer has a yellow fibrinous slough covering 80% of the wound bed. Which debridement method is SAFEST in a patient with peripheral arterial disease (ABI 0.5)?
- Sharp debridement at bedside
- Autolytic debridement with hydrogel (Correct answer)
- Pulsed lavage
- Surgical debridement in the OR
Correct answer: Autolytic debridement with hydrogel
In patients with severe PAD, autolytic debridement is the safest as it is non-traumatic and does not risk further ischemic tissue damage.
Question 3: What is the PRIMARY purpose of wound irrigation during wound bed preparation?
- To introduce antimicrobial agents deep into the tissue
- To remove surface bacteria, debris, and loose necrotic tissue (Correct answer)
- To stimulate granulation tissue proliferation
- To re-epithelialize the wound edges
Correct answer: To remove surface bacteria, debris, and loose necrotic tissue
Wound irrigation mechanically removes bacteria, debris, and loose necrotic material to reduce bioburden and prepare the wound bed.
Question 4: A chronic venous leg ulcer has copious exudate. Which dressing is MOST appropriate to manage excess moisture while maintaining a moist healing environment?
- Hydrocolloid dressing
- Foam dressing with high absorbency (Correct answer)
- Hydrogel sheet
- Transparent film dressing
Correct answer: Foam dressing with high absorbency
High-absorbency foam dressings are ideal for highly exudating wounds as they absorb excess fluid while maintaining adequate moisture balance.
Question 5: Which enzyme is the PRIMARY target of collagenase-based enzymatic debriding agents used in wound care?
- Elastase
- Fibrinolysin
- Type I and Type II collagen in necrotic tissue (Correct answer)
- Matrix metalloproteinase-9
Correct answer: Type I and Type II collagen in necrotic tissue
Collagenase enzymatic agents specifically cleave denatured collagen (Types I and II) in necrotic slough, selectively debriding non-viable tissue.
Question 6: In the TIME framework, 'E' (edge of wound) non-advancement can be caused by all of the following EXCEPT:
- Senescent fibroblasts at wound margins
- Hyperkeratosis of wound edges
- Epibole (rolled wound edges)
- Excessive granulation tissue in the wound center (Correct answer)
Correct answer: Excessive granulation tissue in the wound center
Excess granulation (hypergranulation) can obstruct re-epithelialization but is a wound center issue, not a primary cause of edge non-advancement.
Question 7: A clinician is assessing a wound for the presence of biofilm. Which clinical finding is MOST suggestive of biofilm presence?
- Wound with acute erythema and purulent exudate
- Wound that stalls despite optimal standard of care (Correct answer)
- Wound with excessive granulation tissue
- Wound with serosanguineous drainage
Correct answer: Wound that stalls despite optimal standard of care
A wound that fails to progress despite appropriate treatment is a hallmark sign of biofilm, which resists standard care.
Wound Care Certification Exam Wound Care Certification Wound Bed Preparation Techniques 3
Which pH range is considered optimal for wound healing and proteolytic enzyme activity in a healing wound bed?