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

To save oxygen costs only

Answer

To increase nitrogen narcosis

Answer

To improve viewing clarity

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

Volume changes of trapped gas

Answer

Temperature changes during compression

Answer

Partial pressure summation

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

100% cotton gown

Answer

Cotton sheets

Answer

A grounded pure-cotton pillowcase

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

Store oxygen cylinders

Answer

House the deluge system

Answer

Control chamber lighting

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

Immediately increase oxygen

Answer

Rapidly decompress mid-seizure

Answer

Turn off the intercom

Question 6

What is the typical maximum treatment pressure for routine hyperbaric oxygen therapy?

Accepted Answer

About 2.0 to 3.0 ATA

Answer

About 1.2 ATA

Answer

About 6.0 ATA

Answer

About 10.0 ATA

Question 7

Why is humidity control important inside hyperbaric chambers?

Accepted Answer

High humidity affects patient comfort and static while low humidity increases static risk

Answer

It changes the oxygen percentage reading to zero

Answer

It alters Boyle's law

Answer

It eliminates the need for grounding