Certified Hyperbaric Technologist Test CHT Hyperbaric Equipment and Operations 5

Question 1

What is the main reason multiplace chambers are pressurized with air rather than pure oxygen?

Accepted Answer

To greatly reduce fire risk for occupants

Answer

Air pressurization keeps the chamber atmosphere oxygen low, drastically reducing fire hazard for staff and patients.

Question 2

What does Henry's law describe in the context of hyperbaric therapy?

Accepted Answer

Increased gas dissolving into plasma at higher pressure

Answer

Henry's law explains that more oxygen dissolves into the blood plasma as pressure increases.

Question 3

Which item is generally PROHIBITED from being worn or brought into an oxygen monoplace chamber?

Accepted Answer

Synthetic or wool blankets that generate static

Answer

Static-generating synthetic and wool materials are prohibited; only static-safe cotton is generally allowed.

Question 4

What is the function of a transfer lock (entry lock) on a multiplace chamber?

Accepted Answer

Allow personnel or supplies to enter/exit without decompressing the main chamber

Answer

The transfer lock lets people or items move in and out while the main compartment stays at treatment pressure.

Question 5

If a patient experiences an oxygen toxicity seizure during treatment, the immediate equipment-related action is to:

Accepted Answer

Remove the oxygen mask (switch to chamber air) and avoid decompression during the seizure

Answer

Removing oxygen reduces the toxic exposure, and decompression is delayed until the seizure subsides to avoid lung barotrauma.

Certified Hyperbaric Technologist Test Practice Test