UTC Safety & Infection Control 3

Question 1

Which type of hepatitis virus is most efficiently transmitted through needlestick injuries in healthcare settings?

Accepted Answer

Hepatitis B

Answer

Hepatitis B virus (HBV) is the most efficiently transmitted bloodborne pathogen via needlestick, with a transmission risk of 6–30% per exposure from an HBsAg-positive source.

Question 2

What is the primary purpose of using a transducer sheath/probe cover during endocavitary ultrasound examinations?

Accepted Answer

To provide a barrier against cross-contamination between patients

Answer

Probe covers serve as a physical barrier to prevent cross-contamination between patients, though they do not eliminate the need for high-level disinfection after use.

Question 3

Which disinfectant is most appropriate for cleaning ultrasound transducer surfaces between patients in a low-risk (non-invasive) exam setting?

Accepted Answer

Low-level disinfectant such as quaternary ammonium compound

Answer

Non-critical items like transducer surfaces used on intact skin require only low-level disinfection between patients using agents such as quaternary ammonium compounds.

Question 4

A patient has confirmed active pulmonary tuberculosis. Which precaution level is required during bedside ultrasound?

Accepted Answer

Airborne Precautions

Answer

Active pulmonary tuberculosis is transmitted via airborne particles, requiring Airborne Precautions including an N95 respirator and a negative-pressure isolation room.

Question 5

What is the correct order of steps for donning PPE before entering an isolation room?

Accepted Answer

Gown, mask/respirator, eye protection, gloves

Answer

The CDC-recommended donning order is gown first, then mask or respirator, then eye protection, and finally gloves to ensure each layer is properly placed and protected.

(UTC) Ultrasound Technologist Certification Practice Test

(UTC) Ultrasound Technologist Certification Practice Test

UTC Safety & Infection Control 3