Wound Care Certified Certification (WCC) Practice Exam

What is a potential cause of wound hypoxia?

1. High humidity levels

2. Eschar on the wound bed

3. Frequent dressing changes

4. Antimicrobial agents

The correct answer is: Eschar on the wound bed

Wound hypoxia is a condition where there is inadequate oxygen supply to the tissues, which can significantly hinder the healing process. The presence of eschar on the wound bed is a potential cause of wound hypoxia for several reasons. Eschar, which is a thick, necrotic tissue that forms over a wound, can create a physical barrier that limits oxygen penetration to the underlying tissues. This occlusion can obstruct the delivery of essential nutrients and oxygen required for cellular metabolism and healing, leading to tissue hypoxia. Additionally, eschar can harbor bacteria and contribute to infection, compounding issues with impaired blood flow and oxygen delivery. Understanding the role of eschar in wound healing emphasizes the importance of assessing and managing wound bed health to facilitate oxygenation and healing. In contrast, high humidity levels do not directly cause hypoxia but may influence other aspects of wound healing. Frequent dressing changes, while they may temporarily affect the local environment, are generally beneficial for managing moisture and preventing infection rather than contributing to hypoxia. Antimicrobial agents can help in managing infections but do not contribute directly to the oxygenation of tissues. Overall, recognizing and addressing eschar is crucial in preventing hypoxia and promoting effective wound healing.