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

Depth penetration at 15 cm

Answer

Spatial resolution in the near field

Answer

Acoustic output power in mW/cm²

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 1910.1200 Hazard Communication

Answer

29 CFR 1910.147 Lockout/Tagout

Answer

29 CFR 1910.95 Occupational Noise Exposure

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

Technologist technique variability

Answer

Patient body habitus changes

Answer

Software algorithm update

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

Monthly staff performance reviews

Answer

Physician re-read rate of greater than 25%

Answer

Annual equipment replacement schedule

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

Isopropyl alcohol wipes (70%)

Answer

Quaternary ammonium compound spray

Answer

Mild soap and water rinse

Question 6

During ergonomic assessment of a vascular sonographer's workstation, which finding poses the GREATEST cumulative trauma disorder risk?

Accepted Answer

Scanning hand held with wrist in ulnar deviation for extended periods

Answer

Monitor placed at eye level 18 inches away

Answer

Chair height adjusted so feet rest flat on floor

Answer

Elbow supported on armrest during scanning

Question 7

In a vascular laboratory, the purpose of a written infection control exposure control plan (ECP) is to:

Accepted Answer

Minimize employee exposure to bloodborne pathogens through engineering and work practice controls

Answer

Satisfy Joint Commission documentation requirements only

Answer

Identify and eliminate all biological hazards within 90 days

Answer

Establish a protocol for reporting equipment malfunctions