Certified Hyperbaric Technologist Test CHT Hyperbaric Medicine and Indications 5

Question 1

A scuba diver surfaces too rapidly and develops joint pain and skin mottling. This presentation is consistent with:

Accepted Answer

Decompression sickness (the bends)

Answer

Carbon monoxide poisoning

Answer

Nitrogen narcosis at depth

Answer

Simple muscle strain

Question 2

A patient presents within minutes of a chamber air supply malfunction with sudden neurological deficits after a dive. The most likely emergency requiring immediate recompression is:

Accepted Answer

Arterial gas embolism

Answer

Chronic osteoradionecrosis

Answer

Diabetic foot ulcer

Answer

Sudden hearing loss

Question 3

Before treating a carbon monoxide poisoning patient with HBO, the technologist should know that pulse oximetry readings are unreliable because:

Accepted Answer

Standard pulse oximeters cannot distinguish carboxyhemoglobin from oxyhemoglobin

Answer

The chamber blocks all light signals

Answer

Oximeters fail at high pressure

Answer

CO lowers skin temperature too much

Question 4

A patient scheduled for HBO reports a recent upper respiratory infection with nasal congestion. The main concern is:

Accepted Answer

Inability to equalize, increasing barotrauma risk

Answer

Spontaneous combustion of mucus

Answer

Permanent loss of smell

Answer

Increased oxygen toxicity seizures

Question 5

Necrotizing soft tissue infections (necrotizing fasciitis) are treated with adjunctive HBO in combination with:

Accepted Answer

Surgical debridement and antibiotics

Answer

HBO alone as the sole therapy

Answer

Physical therapy only

Answer

Observation without intervention

Question 6

A claustrophobic patient becomes anxious in a monoplace chamber. The most appropriate initial technologist response is to:

Accepted Answer

Maintain calm communication and reassurance through the chamber intercom

Answer

Immediately perform an emergency rapid decompression

Answer

Ignore the patient until treatment ends

Answer

Increase chamber pressure to distract them

Question 7

Why must a hyperbaric technologist confirm a patient's blood glucose before HBO in a diabetic patient?

Accepted Answer

HBO can lower blood glucose and precipitate hypoglycemia during treatment

Answer

HBO permanently cures diabetes

Answer

Glucose explodes under pressure

Answer

High glucose blocks chamber sensors