CHS Hyperbaric Equipment Operation & Safety 3

Question 1

When performing a pre-treatment electrical safety check on a monoplace chamber, which item is most critical to verify?

Accepted Answer

All electrical equipment inside the chamber is rated for oxygen-enriched environments

Answer

Inside a monoplace chamber, the atmosphere can approach 100% oxygen, so all electrical devices must be rated for oxygen-enriched environments to prevent ignition.

Question 2

A patient exhibits muscle twitching and facial grimacing at 2.4 ATA during 100% oxygen breathing. The operator should FIRST:

Accepted Answer

Switch the patient to air and begin emergency ascent protocol

Answer

These are classic prodromal signs of CNS oxygen toxicity; the immediate response is to remove the oxygen source and decompress according to the emergency protocol.

Question 3

The CO2 scrubber in a multiplace hyperbaric chamber using soda lime must be changed based on which primary indicator?

Accepted Answer

Color change of the soda lime indicator dye or CO2 monitor alarm threshold

Answer

Soda lime exhaustion is best detected by the color-change indicator dye or by CO2 monitoring, as time-based schedules alone may not account for varying patient loads.

Question 4

What is the maximum allowable oxygen percentage in the ambient atmosphere of a multiplace chamber per NFPA 99?

Accepted Answer

23.5%

Answer

NFPA 99 specifies that the ambient oxygen concentration in a multiplace chamber must not exceed 23.5% to minimize fire hazard.

Question 5

Which document must be completed before every hyperbaric treatment session to verify equipment readiness?

Accepted Answer

Pre-treatment equipment checklist

Answer

A pre-treatment equipment checklist confirms that all chamber systems, safety devices, and emergency equipment are functional before each session.

(CHS) Certified Hyperbaric Specialist Practice Test

(CHS) Certified Hyperbaric Specialist Practice Test

CHS Hyperbaric Equipment Operation & Safety 3