CHT (Hyperbaric) Practice Test 2026 — Free CHT (Hyperbaric) Exam Prep Questions
The Certified Hyperbaric Technologist (CHT) exam is taken by respiratory therapists, nurses, EMTs/paramedics, military corpsmen and other licensed clinicians who operate hyperbaric chambers after an approved introductory course and a 480-hour internship. Our practice questions follow the NBDHMT CHT competency standards: gas laws and pressure conversions, gas systems, chamber operations and fire safety, clinical skills, patient care, infection control and transcutaneous oximetry.
A technologist is about to handle a patient and equipment going into a 100% oxygen monoplace chamber. Which hand-hygiene product is consistent with CHT infection-control standards?
CHT (Hyperbaric) format, scoring & key facts
Online exam at recognized testing centers; US Navy Air Decompression Tables and scratch paper provided; simple non-memory calculator allowed.
Facts last verified Oct 5, 2026. Source: nbdhmt.org/wp-content/uploads/2026/07/CHT-Resource-Manual-July-2026.pdf. Always confirm details with NBDHMT before your exam.
When can you take the CHT (Hyperbaric)?
Plan backwards from your exam date
What the CHT (Hyperbaric) covers
Every PrepBanq CHT (Hyperbaric) test covers the official content areas; the test owner does not publish weights.
| Content domain | Our practice questions |
|---|---|
Minimum General RequirementsPhysics of pressurized exposure, pressure-unit conversions, Boyle's, Dalton's, Gay-Lussac's and Henry's laws, barotrauma, decompression illness and pressure-related problems such as oxygen toxicity. | 9 questions → |
Gas SystemsGas purity and oxygen content, gas-usage calculations, gas analyzers and calibration, oxygen cleanliness, filtration and Class A chamber gas control. | 4 questions → |
Chamber Operations and EnvironmentOperating hypo/hyperbaric chambers, pre/post checks, acrylic windows, fire suppression, emergency procedures, prohibited materials and monoplace versus multiplace differences. | 4 questions → |
Clinical Skills (supervised)Pre-treatment safety time-out, vital signs, blood glucose checks, neurological observation and patient preparation and education. | 3 questions → |
Generalized Clinical KnowledgeHyperbaric risks, side effects and medication hazards, effects of gases and pressure on the body, decompression principles and therapeutic tables. | 3 questions → |
Infection Control MeasuresStandard precautions, approved disinfectants and off-gassing risk, alcohol-free hand hygiene products and PPE. | 1 questions → |
Transcutaneous Oxygen (TCOM) Monitoring ModulePrinciples and equipment of transcutaneous oximetry, site selection and preparation, test phases and regional perfusion index computation. | 1 questions → |
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CHT (Hyperbaric) FAQ
How many questions are on the CHT (Hyperbaric)?
The CHT (Hyperbaric) has 120 questions and you have 2 hours to finish. Question types: Multiple choice and true/false.
How long is the CHT (Hyperbaric) exam?
Testing time for the CHT (Hyperbaric) is 2 hours.
What is the passing score for the CHT (Hyperbaric)?
CHT (Hyperbaric) passing standard: 70% correct (90% or higher on a first attempt is graded "With Distinction").
What is on the CHT (Hyperbaric)?
The CHT (Hyperbaric) covers Minimum General Requirements, Gas Systems, Chamber Operations and Environment, Clinical Skills (supervised), Generalized Clinical Knowledge, Infection Control Measures, Transcutaneous Oxygen (TCOM) Monitoring Module.
Who administers the CHT (Hyperbaric)?
The Certified Hyperbaric Technologist (CHT) Exam is administered by NBDHMT. Delivery: Online exam at recognized testing centers; US Navy Air Decompression Tables and scratch paper provided; simple non-memory calculator allowed.
Is there a free CHT (Hyperbaric) practice test?
Yes. PrepBanq has 3 free CHT (Hyperbaric) practice tests with 25 exam-style questions in the real CHT (Hyperbaric) formats, and every answer is explained. No credit card is needed.
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