CBET - Certified Biomedical Equipment Technician Healthcare Technology Problem-Solving Questions and Answers

Question 1

A nurse reports an infusion pump is alarming for "Downstream Occlusion." The BMET visually inspects the IV tubing from the pump to the patient and finds no visible kinks or clamps.
What is the MOST appropriate next step in troubleshooting?

Accepted Answer

Disconnect the tubing from the patient and attempt to run a small volume of fluid into a container.

Answer

Reboot the infusion pump to reset the software.

Answer

Immediately replace the pump's internal pressure sensor.

Answer

Instruct the nurse to increase the infusion rate to try and clear the line.

Question 2

During a surgical procedure, the surgeon reports poor cutting performance from the electrosurgical unit (ESU), and the ECG monitor simultaneously displays significant noise and artifact. Which of the following is the MOST likely root cause for both issues?

Accepted Answer

A poor or dried-out patient return electrode (grounding pad) connection.

Answer

The ESU's power cord is frayed.

Answer

The ECG monitor's filter settings are incorrect.

Answer

The ambient humidity in the operating room is too low.

Question 3

To verify that a defibrillator is delivering the correct amount of energy and that its waveform characteristics are within specifications, a BMET must use which specialized piece of test equipment?

Accepted Answer

A defibrillator/pacer analyzer.

Answer

A digital multimeter with a peak-hold function.

Answer

An electrical safety analyzer.

Answer

An oscilloscope with a high-voltage probe.

Question 4

A BMET is tasked with troubleshooting an intermittent "No Signal" error on a single patient monitor connected to a large central monitoring network. The problem occurs randomly. Which of the following represents the MOST effective initial troubleshooting approach?

Accepted Answer

Systematically swap components one at a time with known good ones, starting with the easiest to replace.

Answer

Re-terminate the network connections at the wall plate and the back of the monitor.

Answer

Immediately replace the patient monitor with a new one.

Answer

Request the hospital's IT department to reboot the central network switch for that floor.

Question 5

An anesthesia machine is failing its automatic low-pressure leak test. The technician has already replaced the entire external breathing circuit with a known good set, but the failure persists. Which of the following is the MOST likely internal component to investigate next for a leak?

Accepted Answer

The CO2 absorber canister and its seals.

Answer

The oxygen flowmeter.

Answer

The main power supply board.

Answer

The vaporizer interlock mechanism.

Question 6

A surgeon reports that a surgical laser is not cutting tissue effectively, despite the power being set correctly on the console. The BMET confirms the laser is generating the correct power at its output port using an external power meter. What is the MOST probable cause for the low power delivery at the surgical site?

Accepted Answer

A damaged or dirty distal tip of the laser fiber.

Answer

A faulty footswitch.

Answer

Incorrect room temperature.

Answer

A software calibration error in the main console.