BTC Safety & Infection Control 4

Question 1

A patient-connected device displays a leakage current reading of 500 µA in the chassis current test. What action is required?

Accepted Answer

Remove the device from service immediately

Answer

The AAMI/ANSI ES60601-1 limit for chassis leakage current is typically 100 µA; 500 µA far exceeds safe limits and requires immediate removal from service.

Question 2

Which hazard is associated with the use of liquid nitrogen in a healthcare setting?

Accepted Answer

Asphyxiation from oxygen displacement in enclosed spaces

Answer

Liquid nitrogen rapidly vaporizes and displaces oxygen, creating an asphyxiation risk in poorly ventilated or enclosed spaces.

Question 3

What does the RACE acronym stand for in fire emergency response in a healthcare facility?

Accepted Answer

Rescue, Alarm, Contain, Extinguish

Answer

RACE stands for Rescue patients in immediate danger, Alarm, Contain the fire, and Extinguish or Evacuate.

Question 4

Glutaraldehyde used for high-level disinfection of endoscopes must be monitored with MEC (Minimum Effective Concentration) test strips because:

Accepted Answer

Glutaraldehyde degrades with repeated use and may fall below effective concentration

Answer

Glutaraldehyde is reused and dilutes over time; MEC test strips confirm the concentration remains sufficient for high-level disinfection.

Question 5

Which safety label category (under NFPA 704) uses the number 4 to indicate the highest hazard level for health risk?

Accepted Answer

Health hazard (Blue)

Answer

The blue (health) section of the NFPA 704 diamond uses 0–4 ratings, with 4 indicating a substance that can cause death or major injury with brief exposure.

(BTC) Biomedical Technician Certification Practice Test

(BTC) Biomedical Technician Certification Practice Test

BTC Safety & Infection Control 4