CABT Installation, Maintenance & Troubleshooting 2 — Questions and Answers
Question 1: When performing incoming inspection on a new medical device, which document should be verified first?
- User manual
- Purchase order and packing slip (Correct answer)
- Service history log
- Calibration certificate
Correct answer: Purchase order and packing slip
The purchase order and packing slip must be verified first to confirm the correct item was received and is undamaged before proceeding with inspection.
Question 2: A biomedical technician installs a new infusion pump and notices the alarm system does not respond during self-test. What is the most appropriate next action?
- Place the device in service and monitor it closely
- Label the device as out-of-service and notify clinical staff (Correct answer)
- Replace the battery and retest
- Disable the alarm and document the issue
Correct answer: Label the device as out-of-service and notify clinical staff
A non-functional alarm on a safety-critical device like an infusion pump means it must be taken out of service immediately until repaired and verified.
Question 3: Which grounding resistance value is generally acceptable for a hospital-grade receptacle outlet?
- Less than 0.1 ohm (Correct answer)
- Less than 0.5 ohm
- Less than 1.0 ohm
- Less than 5.0 ohms
Correct answer: Less than 0.1 ohm
NFPA 99 requires that hospital-grade receptacles have a grounding resistance of less than 0.1 ohm to ensure safe electrical grounding.
Question 4: What is the primary purpose of a preventive maintenance (PM) schedule for biomedical equipment?
- To reduce the purchase cost of new equipment
- To ensure equipment performs safely and reliably between corrective repairs (Correct answer)
- To satisfy insurance requirements only
- To train new technicians on equipment operation
Correct answer: To ensure equipment performs safely and reliably between corrective repairs
Preventive maintenance ensures equipment continues to operate safely and reliably by identifying and correcting potential issues before they cause failure.
Question 5: During installation of a patient monitoring system, the technician discovers the network port assignment conflicts with an existing device on the LAN. Who should be contacted to resolve this?
- The equipment manufacturer only
- The hospital's IT/biomedical informatics department (Correct answer)
- The nursing supervisor
- The Joint Commission surveyor
Correct answer: The hospital's IT/biomedical informatics department
Network IP address and port conflicts must be resolved by the hospital IT or biomedical informatics team who manage the clinical network infrastructure.
Question 6: A ventilator's flow sensor reads consistently 15% higher than the reference standard during calibration. This is an example of:
- Random error
- Systematic bias (offset error) (Correct answer)
- Noise artifact
- Hysteresis
Correct answer: Systematic bias (offset error)
A consistent, predictable deviation in one direction from the true value is called systematic bias or offset error, which can often be corrected through calibration adjustment.
Question 7: Which test is used to verify that a defibrillator delivers the correct energy output?
- Leakage current test
- Energy output test using a defibrillator analyzer (Correct answer)
- Insulation resistance test
- Ground continuity test
Correct answer: Energy output test using a defibrillator analyzer
A defibrillator analyzer measures the actual energy delivered into a known load to confirm that the device outputs the correct joule setting.
CABT Installation, Maintenance & Troubleshooting 2
When performing incoming inspection on a new medical device, which document should be verified first?