Preventive Maintenance and Calibration Flashcards
6 cards from real CBET practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Preventive Maintenance and Calibration flashcards as text
What is the acceptable chassis leakage current limit for a Class I medical device under normal conditions per AAMI/IEC 60601-1?
Answer: 500 µA
IEC 60601-1 limits chassis (enclosure) leakage to 500 µA under normal conditions to protect users and patients.
During a PM on a defibrillator, the BMET checks delivered energy. What instrument is used to measure this?
Answer: Defibrillator analyzer
A defibrillator analyzer measures delivered energy in joules, charge time, and waveform characteristics during PM testing.
A ventilator's tidal volume reading drifts 15% low over three months. What is the most appropriate first action?
Answer: Recalibrate the flow sensor per the service manual
Calibrating the flow sensor restores accurate tidal volume delivery; compensation by adjusting settings masks the underlying inaccuracy.
Which PM task is specific to electrosurgical units (ESUs)?
Answer: Testing return electrode contact quality monitoring (RECM)
RECM testing verifies the ESU will alarm and cut power if the return electrode contact degrades, preventing patient burns.
What is the purpose of a 'loaner pool' in a biomed equipment management program?
Answer: To provide substitute devices while primary equipment is under repair or PM
A loaner pool ensures clinical areas always have a functioning device available when their primary unit is taken offline for maintenance.
Which standard governs the safe use of electrical equipment in patient care areas in US hospitals?
Answer: NFPA 99
NFPA 99 (Health Care Facilities Code) specifically addresses electrical safety, medical gas systems, and other hazards in healthcare facilities.