Certified Hyperbaric Technologist Test Hyperbaric Wound Healing 5

Question 1

In an acute crush injury, early HBO2 is used adjunctively to:

Accepted Answer

Reduce edema and combat tissue hypoxia and ischemia-reperfusion injury

Answer

HBO2 reduces edema via vasoconstriction while maintaining oxygenation and limiting reperfusion injury.

Question 2

Hyperoxic vasoconstriction is therapeutically useful in edematous wounds because it:

Accepted Answer

Reduces tissue swelling without causing hypoxia, due to high plasma O2

Answer

HBO2 constricts vessels to cut edema while the high dissolved O2 keeps tissue oxygenated.

Question 3

Necrotizing soft tissue infection treated with HBO2 benefits because elevated oxygen tension:

Accepted Answer

Is bactericidal/bacteriostatic to anaerobes and supports host defenses

Answer

High oxygen inhibits anaerobes and enhances leukocyte and antibiotic activity in necrotizing infections.

Question 4

Which factor most commonly impairs chronic wound healing and is targeted by HBO2?

Accepted Answer

Local tissue hypoxia

Answer

Persistent local hypoxia stalls healing, and HBO2 directly corrects the oxygen deficit.

Question 5

Documentation for a wound HBO2 program should track which objective healing metric over time?

Accepted Answer

Wound surface area and depth measurements at intervals

Answer

Serial wound area and depth measurements objectively document healing progress and treatment response.

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