BTC Safety & Regulatory Compliance 3 — Questions and Answers
Question 1: Which ANSI/AAMI standard provides guidance on safe current limits and testing methods for electromedical equipment?
- ANSI/AAMI ES60601-1 (Correct answer)
- ANSI/AAMI ST79
- ANSI/AAMI EC57
- ANSI/AAMI TIR34
Correct answer: ANSI/AAMI ES60601-1
ANSI/AAMI ES60601-1 is the U.S. adoption of IEC 60601-1 and establishes safety requirements including current limits for electromedical equipment.
Question 2: When performing an electrical safety inspection, a technician measures 120 µA of patient leakage current in a device connected to a patient. What action is required?
- No action; it is within normal limits
- Tag the device out of service immediately (Correct answer)
- Increase the inspection frequency but keep device in service
- Notify risk management but continue use pending review
Correct answer: Tag the device out of service immediately
Patient leakage current exceeding 100 µA (the NFPA 99 / AAMI limit for patient-connected equipment) requires the device to be removed from service.
Question 3: What is the primary purpose of equipotential grounding in a hospital patient care area?
- To boost the power supply voltage for sensitive equipment
- To ensure all conductive surfaces near the patient are at the same electrical potential (Correct answer)
- To reduce electromagnetic interference on monitoring equipment
- To prevent static electricity buildup on staff uniforms
Correct answer: To ensure all conductive surfaces near the patient are at the same electrical potential
Equipotential grounding connects all conductive surfaces to the same reference potential, eliminating voltage differences that could cause microshock.
Question 4: A hospital biomedical department uses an Alternative Equipment Management (AEM) program. Which criterion is NOT typically required to qualify a device for a non-standard PM interval?
- Low risk of patient harm if the device fails
- No history of causing or contributing to serious incidents
- Device has not been recalled by the manufacturer in the past 10 years (Correct answer)
- Maintenance can be deferred without increasing safety risk
Correct answer: Device has not been recalled by the manufacturer in the past 10 years
AEM eligibility is based on current risk assessment criteria; a past recall does not automatically disqualify a device if current risk criteria are met.
Question 5: Under FDA's Medical Device Reporting (MDR) regulation (21 CFR Part 803), within how many days must a device manufacturer report a death associated with its device?
- 5 calendar days
- 30 calendar days (Correct answer)
- 15 calendar days (expedited)
- 60 calendar days
Correct answer: 30 calendar days
Manufacturers must report device-related deaths to the FDA within 30 calendar days of becoming aware of the event.
Question 6: Which class of fire extinguisher is appropriate for electrical equipment fires in a biomedical workshop?
- Class A
- Class B
- Class C (Correct answer)
- Class D
Correct answer: Class C
Class C extinguishers use non-conductive agents (CO₂ or dry chemical) safe for energized electrical equipment fires.
Question 7: What does ISO 13485 specifically certify for a medical device manufacturer or service organization?
- Clinical trial data accuracy
- Quality management system requirements for medical devices (Correct answer)
- Sterility assurance levels
- Electrical safety testing protocols
Correct answer: Quality management system requirements for medical devices
ISO 13485 specifies requirements for a quality management system where an organization needs to demonstrate its ability to provide medical devices and related services.
BTC Safety & Regulatory Compliance 3
Which ANSI/AAMI standard provides guidance on safe current limits and testing methods for electromedical equipment?