CBET Medical Equipment Function 3

Question 1

What does an automated external defibrillator (AED) analyze before advising a shock?

Accepted Answer

The patient's ECG rhythm to determine if it is a shockable rhythm (VF or pulseless VT)

Answer

The patient's blood pressure

Answer

The patient's blood oxygen level

Answer

The patient's body temperature

Question 2

In a CT scanner, what is the function of the slip ring?

Accepted Answer

To provide continuous electrical connection between the rotating gantry and the stationary frame, enabling helical scanning

Answer

To hold the patient in position

Answer

To adjust the X-ray tube voltage

Answer

To filter the X-ray beam

Question 3

What is the purpose of the beam hardening filter in an X-ray tube assembly?

Accepted Answer

To remove low-energy X-ray photons that would only increase patient skin dose without contributing to image formation

Answer

To focus the X-ray beam

Answer

To reduce the beam intensity evenly

Answer

To convert X-rays to visible light

Question 4

How does a biphasic defibrillation waveform differ from a monophasic waveform, and why is it preferred?

Accepted Answer

Biphasic delivers current in two directions, requiring less energy for effective defibrillation

Answer

Biphasic uses higher energy levels

Answer

Biphasic charges faster

Answer

Biphasic uses DC instead of AC

Question 5

What is the role of the collimator in an X-ray system?

Accepted Answer

To restrict the X-ray beam to the area of clinical interest, reducing patient dose and improving image quality

Answer

To generate X-ray photons

Answer

To detect the X-ray beam after passing through the patient

Answer

To cool the X-ray tube

Question 6

What does the term 'duty cycle' refer to in the context of an electrosurgical unit?

Accepted Answer

The ratio of active current delivery time to total cycle time, which differentiates cutting from coagulation modes

Answer

The percentage of time the device is powered on per day

Answer

The number of procedures before maintenance

Answer

The percentage of power output relative to maximum