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

This step effectively isolates the problem. If the pump can infuse into a container without alarming, the issue is likely with the patient's IV catheter or access site (e.g., a clot or positional infiltration). If it still alarms, the problem is with the pump or the disposable tubing set. This is a critical and non-invasive troubleshooting step that differentiates a device problem from a clinical one.

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 patient return electrode provides a low-impedance path for the high-frequency ESU current to return to the generator. A poor connection increases this impedance, which reduces the ESU's cutting effectiveness and can cause the current to seek alternative paths, often through ECG leads, creating significant artifact.

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 defibrillator/pacer analyzer is a specialized instrument that presents a specific resistive load (typically 50 ohms) to the defibrillator and precisely measures the delivered energy in Joules. It is also designed to analyze key waveform parameters like pulse duration and current, which cannot be done with the other listed devices.

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

For intermittent problems, systematically swapping components is a highly effective troubleshooting technique. Starting with the simplest and most common failure points, such as the network patch cable, then the monitor itself, allows the technician to isolate the faulty element without making assumptions or performing unnecessarily disruptive actions like rebooting a network switch.

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 CO2 absorber canister is a critical part of the low-pressure breathing circuit. Its seals can easily become compromised when the canister is changed or if it is cracked, making it one of the most common sources of leaks within the machine after the external circuit has been ruled out.

CBET - Certified Biomedical Equipment Technician Practice Test

CBET - Certified Biomedical Equipment Technician Practice Test

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