Certified Hyperbaric Technologist Test Hyperbaric Wound Healing

Question 1

How does hyperbaric oxygen therapy promote wound healing?

Accepted Answer

By increasing tissue oxygen levels to stimulate angiogenesis, fibroblast proliferation, and white blood cell function

Answer

By physically compressing the wound closed

Answer

By killing all bacteria through oxygen toxicity

Answer

By reducing blood flow to the wound area

Question 2

What is the recommended HBO protocol for diabetic foot ulcers?

Accepted Answer

2.0-2.4 ATA for 90 minutes, 5 days per week for 20-40 treatments

Answer

1.0 ATA for 30 minutes daily

Answer

3.0 ATA for 120 minutes twice weekly

Answer

2.0 ATA for 15 minutes once weekly

Question 3

What role does transcutaneous oxygen measurement (TcPO2) play in HBO therapy?

Accepted Answer

It assesses tissue oxygenation to predict wound healing potential and patient selection for HBO

Answer

It measures atmospheric oxygen levels in the chamber

Answer

It calibrates the oxygen delivery system

Answer

It monitors the patient's blood pressure during treatment

Question 4

What is the mechanism by which HBO therapy helps treat chronic refractory osteomyelitis?

Accepted Answer

By increasing oxygen delivery to infected bone, enhancing antibiotic effectiveness and white blood cell bactericidal activity

Answer

By directly killing bone cells infected with bacteria

Answer

By reducing bone density to allow drainage

Answer

By heating the bone to sterilize the infection

Question 5

When should HBO therapy be discontinued for a non-healing wound?

Accepted Answer

If no measurable wound improvement is observed after 15-20 treatments

Answer

After exactly 5 treatments regardless of progress

Answer

Only when the patient requests to stop

Answer

Never — treatment should continue indefinitely

Question 6

What is delayed radiation injury and how does HBO therapy treat it?

Accepted Answer

Progressive tissue damage from prior radiation therapy, treated by HBO-stimulated angiogenesis in damaged tissue

Answer

Immediate skin burns from radiation treatment

Answer

Radiation exposure from the hyperbaric chamber

Answer

A side effect of HBO therapy itself