CBET Medical Equipment Function 2

Question 1

What principle does an ultrasound imaging system use to create images of internal body structures?

Accepted Answer

Piezoelectric transducer emitting and receiving high-frequency sound waves

Answer

Ionizing radiation absorption

Answer

Magnetic resonance of hydrogen atoms

Answer

Infrared thermal detection

Question 2

In a mechanical ventilator, what is the function of the PEEP (Positive End-Expiratory Pressure) valve?

Accepted Answer

To maintain positive pressure in the airways at the end of exhalation, preventing alveolar collapse

Answer

To regulate oxygen concentration

Answer

To measure tidal volume

Answer

To trigger the next breath cycle

Question 3

What type of pump mechanism do most volumetric IV infusion pumps use to deliver fluids?

Accepted Answer

Peristaltic pump mechanism that sequentially compresses IV tubing

Answer

Centrifugal pump

Answer

Gear pump

Answer

Diaphragm pump

Question 4

How does a pulse oximeter differentiate between oxygenated and deoxygenated hemoglobin?

Accepted Answer

By comparing absorption of red (660nm) and infrared (940nm) light wavelengths through tissue

Answer

By measuring blood pressure changes

Answer

By analyzing exhaled carbon dioxide

Answer

By measuring skin temperature changes

Question 5

What is the primary function of a defibrillator's capacitor?

Accepted Answer

To store electrical energy that is rapidly discharged through the patient's chest to restore normal heart rhythm

Answer

To regulate the charging voltage

Answer

To filter the incoming AC power

Answer

To power the display screen

Question 6

What safety feature prevents a patient from receiving an uncontrolled free flow of IV fluid if the tubing is removed from an infusion pump?

Accepted Answer

Anti-free-flow clamp mechanism built into the pump door or tubing set

Answer

The drip chamber

Answer

The roller clamp

Answer

The filter in the tubing