Practice Test Geeks(VT) Vascular Technician Certification Practice Test
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Non-Invasive Testing Procedures Flashcards

7 cards from real VT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

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  1. Which duplex finding is MOST consistent with chronic (vs. acute) deep vein thrombosis?

    Answer: Hyperechoic, retracted thrombus with partial recanalization and collaterals

    Chronic DVT is characterized by echogenic, organized thrombus, vein wall thickening, partial recanalization, and visible collateral vessels.

  2. A patient undergoing mesenteric artery duplex has a superior mesenteric artery (SMA) PSV of 310 cm/s. This suggests:

    Answer: Hemodynamically significant SMA stenosis (≥70%)

    SMA PSV >275 cm/s is the standard threshold for ≥70% stenosis in fasting mesenteric duplex.

  3. Which test is PREFERRED to evaluate microcirculatory function and healing potential in a patient with a non-healing foot ulcer?

    Answer: Transcutaneous oxygen tension (TcPO2)

    TcPO2 directly measures tissue oxygenation; values >40 mmHg predict healing, while <20 mmHg suggest poor healing potential.

  4. During a carotid duplex exam, the ICA cannot be differentiated from the ECA by anatomy alone. Which maneuver helps identify the ECA?

    Answer: Temporal artery tapping producing oscillations in the waveform

    Tapping the ipsilateral temporal artery transmits oscillations into the ECA waveform but not the ICA, distinguishing the two vessels.

  5. What is the PRIMARY reason continuous wave (CW) Doppler is used instead of duplex in ABI measurement?

    Answer: CW Doppler is not depth-selective and detects the highest-velocity signal from any depth

    CW Doppler has no range gate, sampling all signals along the beam path, making it reliable for detecting audible flow from poorly localized vessels.

  6. During a graft surveillance duplex exam, which finding MOST urgently requires intervention to prevent graft thrombosis?

    Answer: Graft PSV 3.5

    Low graft flow velocity (3.5) predicts impending thrombosis and warrants urgent revision.

  7. Which non-invasive test is MOST useful for detecting intermittent compression of the subclavian artery in thoracic outlet syndrome (TOS)?

    Answer: Upper extremity duplex with provocative arm positioning (abduction/external rotation)

    Provocative arm positioning (e.g., EAST/AER maneuver) during duplex reproduces dynamic compression of the subclavian artery in TOS.

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Sources & references

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  1. inteleos.org — Test delivery, eligibility, test dates, score validity, retake policy, passing score, exam information · verified Nov 2026
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