Wound Care Certification Exam Wound Care Certification Wound Bed Preparation Techniques 4 — Questions and Answers
Question 1: Which concentration of normal saline is recommended for wound irrigation per WOCN and AHRQ guidelines?
- 0.25% saline
- 0.9% saline (normal saline) (Correct answer)
- 3% hypertonic saline
- 0.5% Dakin's solution
Correct answer: 0.9% saline (normal saline)
0.9% normal saline is the recommended irrigation solution as it is isotonic, non-cytotoxic, and effective for wound cleansing.
Question 2: Periwound maceration is MOST likely caused by which of the following?
- Use of a hydrogel on a dry wound
- Inadequate moisture balance with excessive exudate pooling on intact skin (Correct answer)
- Application of zinc oxide barrier cream
- Insufficient dressing change frequency
Correct answer: Inadequate moisture balance with excessive exudate pooling on intact skin
Maceration occurs when excess wound exudate pools on intact periwound skin, breaking down skin integrity.
Question 3: A wound care specialist selects larval (maggot) debridement therapy for a patient. What is a CONTRAINDICATION to this therapy?
- Chronic venous ulcer with slough
- Wounds communicating with body cavities or organs (Correct answer)
- Diabetic foot ulcer with necrotic tissue
- Pressure injury with fibrinous slough
Correct answer: Wounds communicating with body cavities or organs
Larval debridement is contraindicated in wounds with fistulae or communication with body cavities due to risk of larvae migration.
Question 4: Which statement about hypochlorous acid (HOCl) solutions used in wound bed preparation is MOST accurate?
- HOCl is cytotoxic to fibroblasts at all concentrations
- HOCl at appropriate concentrations is bactericidal and biocompatible with healing tissue (Correct answer)
- HOCl should only be used for acute traumatic wounds
- HOCl is equivalent in toxicity to full-strength Dakin's solution
Correct answer: HOCl at appropriate concentrations is bactericidal and biocompatible with healing tissue
Electrolyzed HOCl solutions are effective antimicrobials that are biocompatible at appropriate concentrations, making them suitable for chronic wound management.
Question 5: When assessing wound bed tissue types, which color is associated with non-viable, dry necrotic tissue (eschar)?
- Red
- Yellow
- Black (Correct answer)
- Pink
Correct answer: Black
Black or dark brown eschar represents dry, desiccated necrotic tissue that must be debrided to allow wound healing.
Question 6: A patient has a Stage 4 pressure injury with undermining and tunneling. How should wound measurements be documented for tunneling?
- Measured with a ruler at the widest visible point
- Measured using a cotton-tipped applicator and clock-face orientation in centimeters (Correct answer)
- Estimated by depth probing only
- Photographed without measurement
Correct answer: Measured using a cotton-tipped applicator and clock-face orientation in centimeters
Tunneling is measured by inserting a cotton-tipped applicator to its deepest point and documenting length with clock-face orientation for direction.
Question 7: Excess matrix metalloproteinases (MMPs) in a chronic wound primarily impair healing by:
- Increasing angiogenesis beyond normal levels
- Degrading growth factors and extracellular matrix components needed for repair (Correct answer)
- Promoting excessive collagen deposition
- Stimulating epidermal migration
Correct answer: Degrading growth factors and extracellular matrix components needed for repair
Elevated MMPs in chronic wounds destroy growth factors, fibronectin, and extracellular matrix proteins essential for tissue repair.
Wound Care Certification Exam Wound Care Certification Wound Bed Preparation Techniques 4
Which concentration of normal saline is recommended for wound irrigation per WOCN and AHRQ guidelines?