RVT Quality Assurance and Safety 2

Question 1

When performing a phantom test on a Doppler ultrasound system, which parameter is most critical to assess flow sensitivity?

Accepted Answer

Minimum detectable velocity using a flow phantom

Answer

Minimum detectable velocity using a certified flow phantom directly measures Doppler sensitivity, which is essential for detecting low-flow states in peripheral vessels.

Question 2

Which OSHA standard is most directly applicable to vascular laboratory staff who handle patient specimens such as blood?

Accepted Answer

29 CFR 1910.1030 Bloodborne Pathogens

Answer

29 CFR 1910.1030 specifically governs exposure to bloodborne pathogens and mandates exposure control plans, PPE use, and hepatitis B vaccination offers.

Question 3

A vascular lab's Doppler velocity measurements drift 15% higher than baseline over six months. The MOST likely cause is:

Accepted Answer

Transducer crystal degradation changing frequency output

Answer

Piezoelectric crystal aging or damage shifts the actual transmitted frequency, causing systematic velocity calculation errors because the Doppler equation uses the known center frequency.

Question 4

When documenting an accreditation-required quality improvement (QI) project, which element is mandatory for ICAVL compliance?

Accepted Answer

Evidence of action taken based on findings and outcome reassessment

Answer

ICAVL requires that QI projects demonstrate a complete cycle: identifying the problem, implementing a change, and reassessing outcomes to confirm improvement.

Question 5

Which cleaning agent is considered safe and effective for high-level disinfection of ultrasound transducers used in intravascular or endovascular applications?

Accepted Answer

Glutaraldehyde-based solution per manufacturer protocol

Answer

Glutaraldehyde (e.g., Cidex) achieves high-level disinfection required for semi-critical devices that contact mucous membranes or non-intact skin when used per protocol.

(RVT) Registered Vascular Technologist Practice Test

(RVT) Registered Vascular Technologist Practice Test

RVT Quality Assurance and Safety 2