CABT Equipment Maintenance and Troubleshooting 2

Question 1

A ventilator alarms 'low pressure' shortly after the patient was suctioned. What is the most likely cause?

Accepted Answer

Patient circuit disconnect or leak

Answer

Kinked inspiratory limb tubing

Answer

Obstructed expiratory valve

Answer

Faulty flow sensor

Question 2

Which maintenance schedule item is considered a 'time-based' preventive maintenance task?

Accepted Answer

Replacing an infusion pump battery every 2 years regardless of cycles

Answer

Cleaning a device only when visibly soiled

Answer

Calibrating a device after each repair

Answer

Replacing a filter only when flow is reduced

Question 3

An ECG monitor displays a wandering baseline. Which intervention should the biomedical technician perform first?

Accepted Answer

Check and improve electrode-to-skin contact

Answer

Replace the ECG cable

Answer

Adjust the low-frequency filter setting

Answer

Inspect the display board

Question 4

When performing electrical safety testing on patient care equipment, the ground wire resistance should typically not exceed:

Accepted Answer

0.5 ohms

Answer

1.0 ohm

Answer

5.0 ohms

Answer

10.0 ohms

Question 5

A defibrillator charges to 200 J but only delivers 150 J during a test discharge. The MOST likely cause is:

Accepted Answer

Capacitor energy leakage or degradation

Answer

Defective display panel

Answer

Incorrect paddle size selected

Answer

Faulty synchronization circuit

Question 6

Which of the following best describes the purpose of a 'load test' on an uninterruptible power supply (UPS)?

Accepted Answer

Confirms the UPS can deliver rated output power for a specified duration

Answer

Verifies input voltage regulation under steady-state conditions

Answer

Tests the surge suppression circuitry

Answer

Checks the battery charger input current

Question 7

A pulse oximeter consistently reads 2% higher than co-oximeter arterial blood gas values. This type of error is called:

Accepted Answer

Systematic (bias) error

Answer

Precision error

Answer

Random error

Answer

Calibration drift