Wound, Ostomy and Continence Nurses Society (WOCN) Practice Exam

Which is NOT a result of Hyperbaric Oxygen Therapy?

1. Vasoconstriction

2. Enhanced collagen synthesis

3. Increased tissue perfusion

4. Increased diffusion distance

The correct answer is: Increased tissue perfusion

The correct choice identifies a result that is not associated with Hyperbaric Oxygen Therapy (HBOT). HBOT primarily involves the administration of oxygen at pressures greater than that of the atmosphere to treat various medical conditions. While it has numerous beneficial effects, one of the key non-results is the increase in tissue perfusion. In fact, HBOT can enhance tissue perfusion; it does this by increasing the amount of oxygen delivered to tissues, which can facilitate healing and recovery in ischemic areas. Additionally, HBOT promotes the formation of blood vessels, which improves circulation in damaged or compromised tissues. As for vasoconstriction, while the initial physiological response to increased pressure might lead to localized constriction of blood vessels during therapy, the overall therapy leads to an increase in oxygen availability, which ultimately supports healing. Enhanced collagen synthesis is a well-documented outcome of HBOT, as the increased oxygen levels assist in cellular processes involved in wound healing and tissue repair. In contrast, the concept of increased diffusion distance refers to how oxygen can travel through tissues to reach areas that are damaged or not receiving adequate blood flow. HBOT actually reduces the diffusion distance by increasing the plasma oxygen levels, which can saturate surrounding tissues. Therefore, the therapy assists in maintaining adequate