CHT CHT Wound Care & Hyperbaric Indications

Question 1

Which diabetic foot wound classification qualifies for HBOT under UHMS-approved indications?

Accepted Answer

Wagner Grade III or higher wound with demonstrated tissue hypoxia

Answer

Wagner Grade I superficial ulcer with no infection

Answer

Wagner Grade II ulcer with adequate perfusion

Answer

Any chronic diabetic wound regardless of perfusion

Question 2

A transcutaneous oxygen measurement (TCOM/TcPO2) below what value indicates severe tissue hypoxia and poor healing potential?

Accepted Answer

25 mmHg

Answer

40 mmHg

Answer

60 mmHg

Answer

80 mmHg

Question 3

HBOT promotes wound healing primarily by:

Accepted Answer

Raising tissue oxygen tension to stimulate angiogenesis, fibroblast activity, and collagen synthesis

Answer

Mechanically destroying bacteria with high pressure

Answer

Cooling tissues to reduce inflammation

Answer

Delivering topical antibiotics more efficiently

Question 4

Carbon monoxide poisoning is treated with HBOT because:

Accepted Answer

Oxygen at high partial pressure competitively displaces CO from hemoglobin, reducing carboxyhemoglobin half-life from ~5 hours to ~20 minutes

Answer

High pressure physically destroys CO molecules

Answer

HBOT prevents cerebral edema by reducing intracranial pressure

Answer

Increased pressure forces CO out through the lungs faster

Question 5

Which type of radiation injury is an approved UHMS indication for HBOT?

Accepted Answer

Delayed radiation necrosis of soft tissue and bone (osteoradionecrosis)

Answer

Acute radiation skin erythema within the first week

Answer

Radiation-induced nausea and vomiting

Answer

Radiation-induced alopecia

Question 6

Compromised skin grafts and flaps are treated with HBOT to:

Accepted Answer

Enhance tissue oxygenation and neovascularization to improve graft and flap survival

Answer

Sterilize the wound bed with high-pressure oxygen

Answer

Reduce post-operative surgical pain

Answer

Accelerate absorbable suture breakdown