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

Replace surgical fixation of fractures

Answer

Eliminate the need for antibiotics

Answer

Increase swelling for better perfusion

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

Stops all blood flow permanently

Answer

Causes profound tissue ischemia

Answer

Increases capillary leak

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

Feeds anaerobic bacteria

Answer

Replaces emergency surgical debridement

Answer

Lowers tissue oxygen further

Question 4

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

Accepted Answer

Local tissue hypoxia

Answer

Excess oxygen in the wound bed

Answer

Too much collagen

Answer

Overactive angiogenesis

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

Patient's favorite color

Answer

Chamber serial number only

Answer

Ambient humidity outside the unit

Question 6

A wound fails to improve after numerous HBO2 sessions and TcPO2 stays low even in-chamber. This suggests:

Accepted Answer

The tissue may be non-responsive, warranting reassessment of the treatment plan

Answer

More dives will always eventually work

Answer

The chamber pressure is irrelevant

Answer

Oxygen has reached toxic wound levels

Question 7

Topical oxygen therapy differs from systemic HBO2 wound treatment in that topical oxygen:

Accepted Answer

Applies oxygen only to the wound surface without systemic pressurization

Answer

Pressurizes the whole body to 2.5 ATA

Answer

Raises plasma oxygen throughout the body

Answer

Is the standard definition of HBO2