Certified Hyperbaric Technologist Test CHT Hyperbaric Equipment and Operations 3

Question 1

Approximately what gauge pressure corresponds to a treatment depth of 60 feet of sea water (FSW)?

Accepted Answer

1.82 ATA gauge (about 2.82 ATA absolute)

Answer

1.0 ATA gauge

Answer

3.0 ATA gauge

Answer

0.5 ATA gauge

Question 2

What instrument is used to continuously monitor oxygen percentage inside a multiplace chamber?

Accepted Answer

An oxygen analyzer

Answer

A sphygmomanometer

Answer

A pyrometer

Answer

A capnograph only

Question 3

During descent (compression), what should a patient do to prevent middle ear barotrauma?

Accepted Answer

Perform equalization maneuvers such as Valsalva

Answer

Hold their breath

Answer

Breathe rapidly

Answer

Lie completely still and avoid swallowing

Question 4

What is the function of a chamber's overboard dump (exhaust) system?

Accepted Answer

Vent exhaled oxygen safely outside to prevent buildup

Answer

Add humidity to the chamber

Answer

Pressurize the chamber faster

Answer

Filter incoming air

Question 5

Which material is most commonly used for the viewing windows of a monoplace chamber?

Accepted Answer

Acrylic (PMMA)

Answer

Tempered soda-lime glass

Answer

Polycarbonate film

Answer

Borosilicate glass

Question 6

What is the recommended action if a fire alarm or smoke is detected in a monoplace oxygen chamber?

Accepted Answer

Begin emergency decompression and remove the patient

Answer

Increase oxygen flow

Answer

Seal all vents and wait

Answer

Raise chamber pressure further

Question 7

Why is grounding (anti-static) important inside hyperbaric chambers?

Accepted Answer

To prevent static sparks that could ignite an oxygen-rich atmosphere

Answer

To improve intercom clarity

Answer

To stabilize the temperature

Answer

To reduce patient anxiety