Certification Examination Practice

Illinois Hyperbaric Technologist Certification Examination Practice Questions And Correct Answers (Verified Answers) Plus Rationales 2026 Q&A | Instant Download Pdf

Q1: Which gas law explains the inverse relationship between pressure and

volume?

• Charles’ Law
• Dalton’s Law
• Graham’s Law
• Boyle’s Law

Rationale: Boyle’s Law states that pressure increases as gas volume

decreases, which is foundational to hyperbaric physiology.

Q2: Hyperbaric treatments are typically conducted using which breathable

gas?

• Nitrogen 1 / 3

• Heliox
• Carbogen
• 100% oxygen

Rationale: Hyperbaric therapy utilizes 100% oxygen to increase tissue

oxygenation and support healing.Q3: A monoplace hyperbaric chamber typically accommodates:

• Up to 4 patients
• 20+ patients
• One patient
• Two patients

Rationale: A monoplace chamber is a single-occupant system.

Q4: The primary risk associated with rapid decompression is:

• Carbon monoxide poisoning
• Decompression sickness
• Barotrauma to teeth
• Dermal cracking

Rationale: Fast decompression allows nitrogen bubbles to form in blood

and tissues.

Q5: Which condition is an approved indication for hyperbaric oxygen

therapy?

• Hypertension
• Carbon monoxide poisoning
• Epilepsy 2 / 3

• Gastritis

Rationale: CO poisoning is an FDA-approved indication due to oxygen

displacement of CO from hemoglobin.Q6: Dalton’s Law refers to:

• Heat and gas pressure
• Partial pressures of gases
• Gas solubility in fluids
• Gas diffusion rates

Rationale: Dalton’s Law explains that the total pressure of a mixture

equals the sum of each gas’s partial pressure.Q7: The most common ear-related complication in hyperbaric therapy is:

• Otitis media
• Middle-ear barotrauma
• External ear infection
• Inner ear dysplasia

Rationale: Pressure imbalance during compression most commonly affects

the middle ear.

Q8: What is the typical pressure setting for most standard HBOT sessions?

A) 1.0 ATA

B) 2.0–3.0 ATA

C) 5.0 ATA

• 10 ATA
• / 3