RVT Exam Flashcards

Q: What is covered on the RVT Vascular Technology exam?

The exam covers normal vascular anatomy and hemodynamics, pathology, surgically altered anatomy, physiologic exams, ultrasound-guided procedures, Doppler physics, quality assurance, patient preparation, documentation, and communication.

Q: How many questions are on the RVT exam?

The local RVT exam profile lists 170 multiple-choice and hotspot questions with a 3-hour testing time.

Q: What score is needed to pass the RVT exam?

The RVT Vascular Technology exam uses the ARDMS scaled score system, with 555 required to pass on a 300-700 scale.

Q: How long should I study for RVT?

A comprehensive plan commonly uses 150-200 hours, with extra time for pathology recognition, Doppler optimization, physiologic exams, and weak vascular territories found during practice.

Q: What happens if I fail the RVT exam?

The retake policy used here lists a 60-day wait between attempts and a maximum of 3 attempts per year. Use the score report to rebuild your plan around the weakest domains.

Q: Do these flashcards replace RVT practice questions?

No. Flashcards help with recall and interpretation rules. Use them with mixed practice questions, waveform review, and protocol-based scanning review.

Question 1

Internal carotid artery waveform

Accepted Answer

The ICA normally has a low-resistance pattern with forward diastolic flow because it supplies the brain. Compare it with the ECA, which is usually more pulsatile and higher resistance.

Question 2

External carotid artery clues

Accepted Answer

The ECA has cervical branches and a higher-resistance waveform. Temporal tapping may create oscillations in the ECA tracing, helping distinguish it from the ICA during duplex.

Question 3

Carotid bulb scanning risk

Accepted Answer

Avoid excessive pressure at the carotid bifurcation because the sinus contains pressure-sensitive receptors. Compression can trigger a vagal response in susceptible patients.

Question 4

Vertebral artery direction

Accepted Answer

Normal vertebral flow is antegrade toward the brain. Reversal or bidirectional flow suggests a proximal subclavian problem and should prompt careful correlation with arm pressures and symptoms.

Question 5

Subclavian steal pattern

Accepted Answer

A proximal subclavian obstruction can pull blood away from the vertebrobasilar system toward the arm. Duplex may show progressively abnormal vertebral flow, from early systolic deceleration to complete reversal.

Question 6

Spectral broadening

Accepted Answer

Spectral broadening means a wide range of Doppler shifts are present. It commonly appears with disturbed flow, turbulence, poor sample placement, or excessive gain.

Question 7

Aliasing in pulsed Doppler

Accepted Answer

Aliasing occurs when the Doppler shift exceeds the system's sampling limit. Raising the scale, lowering the baseline, reducing Doppler frequency, or using continuous wave Doppler can help display high velocities.

Question 8

Doppler angle correction

Accepted Answer

Velocity estimates are most defensible when the Doppler cursor is aligned with flow and the angle is 60 degrees or less. Incorrect angle alignment can make a normal vessel look falsely abnormal.

Question 9

Color Doppler scale

Accepted Answer

Set the color scale to match expected flow. Too low a scale creates aliasing and color noise; too high a scale can hide slow flow, especially in veins or distal arteries.

Question 10

Power Doppler use

Accepted Answer

Power Doppler is sensitive to low-volume flow and less angle dependent than color direction mapping. It does not show direction well, so it should not replace spectral confirmation when direction matters.

Question 11

Laminar flow

Accepted Answer

Laminar flow moves in organized layers, with faster flow near the center of the vessel and slower flow near the wall. Normal laminar flow produces a clean spectral window.

Question 12

Turbulent flow

Accepted Answer

Turbulence appears as chaotic flow with spectral fill-in, color variance, vibration, or bruit. It often occurs distal to a significant narrowing or at abrupt changes in vessel geometry.

Question 13

Continuity principle

Accepted Answer

When flow volume is conserved through a narrowed segment, velocity rises inside the narrowed lumen. This is why focal velocity acceleration is a core clue for stenosis.

Question 14

Post-stenotic waveform change

Accepted Answer

Downstream from a severe stenosis, the waveform may become damped with delayed systolic rise and reduced pulsatility. This supports a proximal hemodynamic lesion even when the lesion itself is hard to see.

Question 15

Arterial resistance patterns

Accepted Answer

Peripheral limb arteries normally show higher resistance at rest, while arteries supplying low-resistance beds show more continuous diastolic flow. Always interpret waveform shape in its vascular territory.

Question 16

Aortic arch branches

Accepted Answer

Typical arch branching is brachiocephalic artery, left common carotid artery, and left subclavian artery. The brachiocephalic then divides to supply the right carotid and right subclavian systems.

Question 17

Carotid bifurcation

Accepted Answer

The common carotid artery divides into the ICA and ECA. The ICA supplies the brain and has no neck branches; the ECA supplies face and scalp structures through multiple branches.

Question 18

Superficial femoral artery transition

Accepted Answer

The superficial femoral artery continues through the adductor hiatus and becomes the popliteal artery. This transition matters when tracing lower extremity arterial disease.

Question 19

Tibial artery anatomy

Accepted Answer

Below the knee, runoff assessment follows the anterior tibial, posterior tibial, and peroneal arteries. Knowing their course helps distinguish true occlusion from incomplete scanning.

Question 20

Great saphenous vein course

Accepted Answer

The great saphenous vein travels along the medial leg and thigh to the saphenofemoral junction. It is a major target in reflux exams and a common conduit for bypass grafting.

Question 21

Small saphenous vein course

Accepted Answer

The small saphenous vein ascends the posterior calf and commonly joins the popliteal vein. Its termination varies, so duplex should follow the actual anatomy rather than assume a single pattern.

Question 22

Celiac artery branches

Accepted Answer

The celiac axis typically supplies the liver, stomach, and spleen through hepatic, left gastric, and splenic branches. Variant anatomy is common and should be documented when seen.

Question 23

Mesenteric arterial flow after eating

Accepted Answer

A normal mesenteric artery supplying bowel can show increased diastolic flow after a meal because vascular resistance falls during digestion. Fasting status helps explain waveform differences.

Question 24

Renal artery stenosis clue

Accepted Answer

A focal renal artery stenosis is suggested by localized velocity acceleration, turbulence, and downstream waveform delay. Compare both kidneys and correlate with aortic flow and technical limitations.

Question 25

Abdominal aortic aneurysm survey

Accepted Answer

A complete aneurysm exam documents maximal diameter, extent, thrombus, lumen flow, branch involvement when visible, and relationship to prior repair if present.

Question 26

Portal venous direction

Accepted Answer

Normal portal venous flow is hepatopetal, meaning toward the liver. Direction, pulsatility, and patency should be described because they can change with liver and cardiac disease.

Question 27

Peripheral arterial stenosis

Accepted Answer

A hemodynamically important arterial stenosis usually produces focal velocity increase, color aliasing, turbulence, and waveform change beyond the lesion. Diagnosis should use the full pattern, not a single image.

Question 28

Arterial occlusion

Accepted Answer

Occlusion is suggested by absent color and spectral flow in the vessel segment, collateral flow around it, and reconstitution distally. Confirm with optimized settings before calling no flow.

Question 29

Pseudoaneurysm neck

Accepted Answer

A pseudoaneurysm communicates with an artery through a neck. Duplex often shows bidirectional flow in the neck and swirling flow in the sac, which guides treatment planning.

Question 30

Arteriovenous fistula after puncture

Accepted Answer

An acquired AV fistula creates direct arterial-to-venous communication. Expect arterialized venous flow, low-resistance arterial inflow, vibration, and localized color turbulence.

Question 31

Acute versus chronic thrombus

Accepted Answer

Acute venous thrombus is often more distending and less echogenic; chronic thrombus is more likely contracted, echogenic, and associated with wall thickening or collateral channels.

Question 32

Compression venous ultrasound

Accepted Answer

Failure of a vein to compress is a primary sign of thrombus. Compression should be performed carefully, compared segment by segment, and supplemented with color and spectral findings.

Question 33

Venous respiratory phasicity

Accepted Answer

Normal lower extremity venous Doppler varies with breathing. Loss of expected phasicity can suggest proximal obstruction, extrinsic compression, or technical factors that need investigation.

Question 34

Venous augmentation

Accepted Answer

Manual distal compression should increase venous flow if the pathway is patent. A poor response can reflect obstruction, poor technique, patient guarding, or inadequate distal compression.

Question 35

Venous reflux testing

Accepted Answer

Reflux exams test valve competence by provoking reverse flow with maneuvers such as distal compression-release or Valsalva at junctions. The report should identify the segment and source of reflux.

Question 36

Perforator veins

Accepted Answer

Perforators connect superficial and deep venous systems. Incompetent perforators can feed varicosities and ulcers, so reflux exams should map clinically relevant connections.

Question 37

ABI calculation

Accepted Answer

The ankle-brachial index compares ankle systolic pressure with brachial systolic pressure. Use it as a physiologic screen for lower extremity arterial disease and interpret it with waveform quality.

Question 38

Noncompressible ankle arteries

Accepted Answer

When ankle vessels do not compress well, ABI can look falsely reassuring. Toe pressures, PPG, Doppler waveforms, and clinical context can better reflect distal perfusion.

Question 39

Segmental pressures

Accepted Answer

Segmental pressures localize arterial disease by comparing pressure changes between limb levels. A meaningful drop points to disease between the two measurement sites.

Question 40

Pulse volume recordings

Accepted Answer

PVR waveforms assess limb volume change with each pulse. Dampened amplitude, delayed upstroke, or flattened contours support impaired arterial inflow even when pressures are hard to obtain.

Question 41

Exercise arterial testing

Accepted Answer

Exercise testing can reveal flow limitation that is not obvious at rest. Post-exercise pressure and waveform recovery help distinguish vascular claudication from nonvascular leg pain.

Question 42

Bypass graft surveillance

Accepted Answer

Graft evaluation follows inflow, proximal anastomosis, conduit, distal anastomosis, and outflow. Focal velocity changes, low graft flow, or new waveform dampening may signal graft-threatening disease.

Question 43

Stent evaluation

Accepted Answer

Stents can create artifact and alter compliance, so assess the pre-stent segment, entire stent, edges, and downstream flow. Compare with prior studies when available.

Question 44

Dialysis access inflow

Accepted Answer

An AV access exam checks arterial inflow, anastomosis, draining vein or graft, depth, diameter, stenosis, thrombus, and complications such as steal or pseudoaneurysm.

Question 45

Endovascular aneurysm repair follow-up

Accepted Answer

Post-EVAR ultrasound evaluates sac size, graft patency, limb flow, and evidence of endoleak. Comparison with prior imaging is essential because change over time drives concern.

Question 46

Ultrasound-guided access

Accepted Answer

For vascular access, identify the vessel, confirm patency, avoid adjacent nerves or arteries, maintain sterile technique, and keep the needle tip visible whenever possible.

Question 47

Pseudoaneurysm compression safety

Accepted Answer

Compression treatment requires confirmation of anatomy, attention to anticoagulation status, patient tolerance, and distal perfusion. Stop and escalate if pain, ischemic signs, or instability develops.

Question 48

ALARA in vascular ultrasound

Accepted Answer

Use the lowest output and shortest exposure that produces diagnostic information. This is especially important during long exams, repeated measurements, and guided procedures.

Question 49

Documenting a vascular duplex

Accepted Answer

A defensible report documents indication, vessels evaluated, technical limits, representative images, Doppler measurements, waveform descriptors, and clinically important positive or negative findings.

Question 50

When findings do not fit

Accepted Answer

If anatomy, symptoms, grayscale, color, and spectral data disagree, optimize settings and rescan before concluding. Vascular interpretation depends on a coherent pattern across modalities.

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