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

A low-pressure alarm following suctioning typically indicates an accidental circuit disconnection or a loose connection that allowed air to escape.

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

Time-based preventive maintenance replaces components on a fixed calendar interval regardless of use or condition, such as replacing a battery every two years.

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

A wandering baseline is most commonly caused by poor electrode-to-skin contact due to dry gel, motion, or improper placement.

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

NFPA 99 and AAMI standards generally require that the resistance of the equipment ground (protective earth) conductor not exceed 0.5 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

A significant gap between stored and delivered energy typically indicates capacitor degradation, which causes energy to leak before discharge.

(CABT) Certified Associate in Biomedical Technology Practice Test

(CABT) Certified Associate in Biomedical Technology Practice Test

CABT Equipment Maintenance and Troubleshooting 2