Certified Hyperbaric Technologist Test CHT Hyperbaric Equipment and Operations 4

Question 1

What is the typical compression rate consideration when treating a patient prone to ear barotrauma?

Accepted Answer

Slow the rate of pressurization to allow equalization

Answer

Slowing the compression rate gives the patient time to equalize and prevents ear injury.

Question 2

Which gas law explains why a sealed, non-vented air space (like a gas-filled cyst) shrinks during compression?

Accepted Answer

Boyle's law

Answer

Boyle's law states gas volume decreases as pressure increases at constant temperature.

Question 3

What is the purpose of an 'air break' during a hyperbaric oxygen treatment?

Accepted Answer

Reduce risk of central nervous system oxygen toxicity

Answer

Periodic air breaks lower oxygen exposure to reduce the chance of CNS oxygen toxicity seizures.

Question 4

Before a treatment, why must a technologist verify the patient has removed all prohibited items?

Accepted Answer

To eliminate fire and static ignition hazards in the chamber

Answer

Removing flammable items and static-generating materials prevents fire ignition in the oxygen environment.

Question 5

What does a chamber's pressure gauge (manometer) display during treatment?

Accepted Answer

The pressure inside the chamber relative to ambient

Answer

The chamber manometer shows internal pressure, usually as gauge pressure or depth equivalent.

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