CBET General Practice 2

Question 1

A biomedical technician is troubleshooting an infusion pump that delivers inconsistent flow rates. Which component is MOST likely responsible?

Accepted Answer

Peristaltic pump mechanism

Answer

The peristaltic pump mechanism directly controls fluid delivery, and wear or misalignment causes inconsistent flow rates.

Question 2

According to NFPA 99, the maximum allowable ground resistance for a receptacle in a patient care area is:

Accepted Answer

0.1 ohms

Answer

NFPA 99 requires receptacle ground resistance to not exceed 0.1 ohms in patient care areas to ensure electrical safety.

Question 3

Which type of fire extinguisher is appropriate for electrical equipment fires in a biomedical equipment area?

Accepted Answer

Class C (CO2 or dry chemical)

Answer

Class C extinguishers use non-conductive agents like CO2 or dry chemical, making them safe for energized electrical equipment fires.

Question 4

A patient monitor displays an artifact that disappears when the patient's lead wires are disconnected. This MOST likely indicates:

Accepted Answer

EMI from external sources coupling through the leads

Answer

When artifact disappears upon lead disconnection, the leads are acting as antennas picking up electromagnetic interference from external sources.

Question 5

The term 'microshock' refers to hazardous current delivered:

Accepted Answer

Directly to the heart via an intracardiac catheter at levels as low as 10 µA

Answer

Microshock occurs when current bypasses skin resistance and reaches the heart directly, where as little as 10 µA can induce ventricular fibrillation.

CBET - Certified Biomedical Equipment Technician Practice Test