Certified Hyperbaric Technologist Test Hyperbaric Emergency Medicine 2

Question 1

A patient inside a monoplace chamber develops a tonic-clonic seizure consistent with CNS oxygen toxicity. What is the FIRST action the technologist should take?

Accepted Answer

Maintain depth and wait for the seizure to subside before decompressing

Answer

Begin a rapid emergency decompression immediately

Answer

Increase chamber oxygen to saturate tissues

Answer

Open the chamber door at depth to ventilate

Question 2

Which gas is administered to switch a patient off oxygen during management of CNS oxygen toxicity in a multiplace chamber?

Accepted Answer

Air breaks via the built-in breathing system

Answer

100% oxygen via demand valve

Answer

Pure nitrous oxide

Answer

Carbon dioxide enrichment

Question 3

A fire is the most catastrophic hyperbaric emergency primarily because the chamber atmosphere has an elevated:

Accepted Answer

Partial pressure of oxygen

Answer

Humidity level

Answer

Carbon dioxide concentration

Answer

Nitrogen narcosis potential

Question 4

What is the most appropriate immediate response to a chamber fire in a multiplace chamber?

Accepted Answer

Activate the deluge/fire suppression system and begin emergency procedures

Answer

Open all gas valves to vent the chamber

Answer

Increase depth to compress the flames

Answer

Disconnect the grounding straps

Question 5

A diver presents with joint pain, skin mottling, and fatigue after a rapid ascent. This presentation is most consistent with:

Accepted Answer

Decompression sickness

Answer

Carbon monoxide poisoning

Answer

Nitrogen narcosis

Answer

Oxygen toxicity

Question 6

During a hyperbaric treatment the chamber loses external power. The technologist should be prepared to:

Accepted Answer

Switch to backup/manual control and continue a controlled treatment or decompression

Answer

Abandon the patient and evacuate

Answer

Immediately blow the chamber to surface

Answer

Wait for power without intervention

Question 7

Which finding would most strongly suggest arterial gas embolism rather than decompression sickness in a surfacing diver?

Accepted Answer

Sudden loss of consciousness or stroke-like symptoms within minutes of surfacing

Answer

Gradual onset of joint pain over hours

Answer

Itchy skin only

Answer

Mild fatigue the next day