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Hyperbaric Chamber Operations & Safety Flashcards

7 cards from real CHT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Hyperbaric Chamber Operations & Safety flashcards as text

  1. What is the maximum allowable oxygen concentration in a multiplace chamber breathing air, per NFPA 99 guidelines?

    Answer: 23.5%

    NFPA 99 sets 23.5% as the oxygen-enriched atmosphere threshold; chamber ambient O2 must be maintained below this level to reduce fire risk.

  2. A CHT notices the chamber's oxygen analyzer reads 25% during a multiplace treatment. What is the priority action?

    Answer: Increase ventilation rate to purge excess oxygen

    Elevated chamber O2 above 23.5% creates an oxygen-enriched fire hazard; increasing ventilation to purge excess O2 is the correct first response.

  3. Which U.S. Navy Treatment Table is most commonly used for AGE (arterial gas embolism) in a clinical hyperbaric facility?

    Answer: Table 6A

    U.S. Navy Treatment Table 6A is the standard table for arterial gas embolism, reaching 60 fsw with oxygen and air breathing cycles.

  4. What does the term 'fsw' represent in hyperbaric medicine?

    Answer: Feet of salt water — a unit of pressure depth

    fsw stands for feet of sea water, a common depth/pressure unit in U.S. hyperbaric practice; 33 fsw = 1 ATA gauge pressure.

  5. Why must petroleum-based lubricants NEVER be used on oxygen-system fittings in a hyperbaric chamber?

    Answer: They can ignite explosively when exposed to high-pressure oxygen

    Petroleum-based lubricants are highly combustible and can spontaneously ignite upon contact with high-pressure oxygen, causing catastrophic fire or explosion.

  6. A hyperbaric technician is logging the treatment profile. Which parameter must be recorded at a minimum every 5 minutes during a dive?

    Answer: Chamber depth/pressure

    Chamber depth/pressure is the critical parameter that must be logged at regular intervals (typically every 5 minutes) to create a verifiable treatment record.

  7. What is the function of the oxygen flush valve on a monoplace hyperbaric chamber?

    Answer: It purges carbon dioxide buildup from the chamber atmosphere

    The O2 flush valve on a monoplace chamber continuously replenishes oxygen and removes CO2 accumulation from the patient's exhalation.