Certified Hyperbaric Technologist Test Hyperbaric Chamber Operations 2 — Questions and Answers
Question 1: During a monoplace chamber treatment, the chamber is pressurized and ventilated using which gas?
- 100% oxygen (Correct answer)
- Room air
- Heliox
- Nitrox
Correct answer: 100% oxygen
A monoplace chamber is typically compressed with 100% oxygen, so the patient breathes the chamber atmosphere directly.
Question 2: What is the primary reason cotton garments are required for patients inside a hyperbaric chamber?
- They reduce static electricity and fire risk (Correct answer)
- They are more comfortable
- They improve oxygen absorption
- They prevent claustrophobia
Correct answer: They reduce static electricity and fire risk
Cotton minimizes static discharge that could ignite the oxygen-enriched environment, reducing fire hazard.
Question 3: In a multiplace chamber, how is hyperbaric oxygen most commonly delivered to patients?
- Via a mask, hood, or endotracheal tube (Correct answer)
- By compressing the chamber with pure oxygen
- Through IV oxygen infusion
- Through skin absorption only
Correct answer: Via a mask, hood, or endotracheal tube
Multiplace chambers are pressurized with air, and patients breathe oxygen through a mask, hood, or tube.
Question 4: What does the term 'descent' refer to in a hyperbaric treatment?
- Increasing chamber pressure (compression) (Correct answer)
- Lowering the chamber physically
- Decreasing oxygen concentration
- Ending the treatment
Correct answer: Increasing chamber pressure (compression)
Descent is the compression phase where pressure increases, simulating going deeper underwater.
Question 5: A common treatment pressure for routine wound-care hyperbaric therapy is approximately:
- 2.0 to 2.5 ATA (Correct answer)
- 1.1 ATA
- 4.0 ATA
- 6.0 ATA
Correct answer: 2.0 to 2.5 ATA
Most elective HBO protocols use 2.0 to 2.5 atmospheres absolute for wound healing.
Question 6: What is the technologist's most important action if a patient reports ear pain during compression?
- Slow or halt compression and coach equalization (Correct answer)
- Increase pressure faster to push through
- Immediately decompress to surface
- Ignore it as normal
Correct answer: Slow or halt compression and coach equalization
Slowing the rate and coaching clearing techniques allows the middle ear to equalize and prevents barotrauma.
Question 7: Which environmental parameter must be continuously monitored inside an oxygen-rich chamber to prevent fire?
- Oxygen concentration (Correct answer)
- Carbon dioxide only
- Humidity only
- Nitrogen partial pressure
Correct answer: Oxygen concentration
Oxygen concentration is monitored because elevated levels dramatically increase fire risk.
Certified Hyperbaric Technologist Test Hyperbaric Chamber Operations 2
During a monoplace chamber treatment, the chamber is pressurized and ventilated using which gas?