Certified Hyperbaric Technologist Test Hyperbaric Wound Healing 3

Question 1

Delayed radiation injury (soft tissue radionecrosis) responds to HBO2 primarily because the therapy:

Accepted Answer

Induces neovascularization in irradiated, hypovascular tissue

Answer

HBO2 stimulates angiogenesis in the hypoxic, hypocellular, hypovascular irradiated tissue bed.

Question 2

The Marx protocol for osteoradionecrosis classically combines HBO2 with:

Accepted Answer

Staged surgical management based on treatment response

Answer

The Marx protocol stages surgical intervention according to the patient's response to HBO2.

Question 3

Compromised skin grafts and flaps benefit from HBO2 because oxygen:

Accepted Answer

Supports marginally perfused tissue and reduces ischemia-reperfusion injury

Answer

HBO2 salvages compromised grafts/flaps by oxygenating marginal tissue and limiting reperfusion injury.

Question 4

Which laboratory or bedside finding suggests a chronic wound is hypoxic and may need HBO2 evaluation?

Accepted Answer

Persistently low periwound TcPO2 that rises with oxygen challenge

Answer

Low TcPO2 that improves with an oxygen challenge indicates correctable tissue hypoxia.

Question 5

For a patient on the chemotherapy drug doxorubicin, the technologist should be aware that HBO2 may:

Accepted Answer

Potentiate the drug's cytotoxic and cardiotoxic effects

Answer

Doxorubicin is a recognized HBO2 interaction concern due to enhanced toxicity.

Certified Hyperbaric Technologist Test Practice Test