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Quizzes > Quizzes for Business > Healthcare

Neurointerventional Device Knowledge Test Challenge

Assess Your Endovascular Device Proficiency Now

Difficulty: Moderate
Questions: 20
Learning OutcomesStudy Material
Colorful paper art depicting a quiz on Neurointerventional Device Knowledge Test.

Ready to elevate your expertise with this neurointerventional quiz? Joanna Weib invites clinicians and device specialists to test their knowledge of endovascular devices and techniques in a challenging, interactive format. With real-world scenarios you'll identify key functions, safety steps, and deployment strategies. You can also explore related exercises like the Medical Device Product Knowledge Quiz or a Medical Device User Knowledge Quiz, or browse more quizzes to expand your skills. All content is fully customizable in our editor to suit your learning path.

What is the primary function of a stent retriever in ischemic stroke treatment?
Provide structural support to an aneurysm
Expand vessel diameter permanently by drug release
Deliver chemotherapeutic agents to the lesion site
Mechanically remove a clot from the vessel lumen
A stent retriever is designed to engage and remove thrombus mechanically from occluded cerebral arteries during acute ischemic stroke. It does not deliver drugs or provide permanent structural support like flow diverters or drug”eluting stents.
Which arterial circle at the base of the brain provides collateral circulation?
Carotid sinus
Circle of Willis
Choroid plexus
Basilar plexus
The Circle of Willis is the arterial ring at the brain's base that allows for collateral blood flow between major cerebral arteries. It is distinct from structures like the carotid sinus or choroid plexus.
What is a key safety consideration before deploying coils in an aneurysm?
Reverse heparinization completely
Ensure adequate anticoagulation to reduce thromboembolic risk
Administer protamine to induce clotting
Maintain systolic blood pressure above 200 mmHg
Adequate anticoagulation during coil deployment helps prevent thrombus formation on deployed coils. Reversing anticoagulation or inducing clotting would increase risk of thromboembolic complications.
Which fluoroscopic technique provides a roadmap overlay for vessel navigation?
Flat-panel CT
Digital subtraction angiography (DSA) cine
Standard fluoroscopic spot image
Roadmap view
The roadmap view uses subtraction images to overlay vessel contours onto live fluoroscopy, guiding catheter navigation. Standard fluoroscopy or flat-panel CT do not provide this live overlay.
When selecting a microcatheter for distal small-caliber vessel navigation, which feature is most important?
Large inner lumen diameter
High radial force
Flexible hydrophilic coating
Stainless steel braiding
A hydrophilic coating reduces friction, facilitating smooth passage through tiny or tortuous vessels. High radial force or large lumen are less critical for distal, small”caliber navigation.
During mechanical thrombectomy of an M1 segment occlusion, how does a stent retriever capture the clot?
It aspirates the clot without mesh engagement
It uses ultrasound energy to fragment the clot
The device mesh intercalates into the thrombus and traps it
It dissolves the thrombus chemically
A stent retriever deploys a mesh-like structure that embeds into the thrombus, allowing the operator to ensnare and remove the clot. Aspiration-only or chemical methods are different thrombectomy techniques.
Which ICA segment passes through the petrous portion of the temporal bone?
C1 segment (Cervical ICA)
C3 segment (Lacerum ICA)
C4 segment (Cavernous ICA)
C2 segment (Petrous ICA)
The C2 segment of the internal carotid artery, also called the petrous ICA, travels through the petrous temporal bone. Other segments occupy different anatomical regions.
In the event of coil herniation into the parent artery, what is the recommended bailout technique?
Sacrifice the parent vessel
Deploy a remodeling balloon and reposition the herniated coil
Leave the coil and observe without intervention
Convert immediately to a flow diverter
Balloon-assisted remodeling is often employed to gently push herniated coil loops back into the aneurysm sac, preserving parent vessel patency. Sacrifice or observation can carry high risks.
Which C-arm angulation best visualizes the carotid siphon lateral curvature under fluoroscopy?
Strict lateral projection
Right anterior oblique 30°
Left anterior oblique 30°
Anterior-posterior projection
A strict lateral view aligns the X-ray beam perpendicular to the curvature of the carotid siphon, clearly demonstrating its lateral bend. Other oblique or AP views do not depict this curvature as definitively.
When deciding between a flow diverter and coil embolization for a wide-necked aneurysm, which factor is most critical?
Coil softness preference
Aneurysm calcification degree
Neck-to-dome ratio greater than 0.7
Patient age under 40 years
A high neck-to-dome ratio indicates a wide-necked morphology that may be better treated with a flow diverter to reconstruct the parent vessel and reduce recurrence. Patient age or coil softness are secondary considerations.
During navigation, the microcatheter shows no contrast flow but no pressure waveform change; what is the best troubleshooting step?
Exchange to a larger guide catheter
Gently withdraw the catheter to relieve a possible kink
Increase injection pressure to force flow
Administer additional heparin systemically
A lack of flow without pressure change suggests a kink or sharp bend in the microcatheter. Withdrawing slightly can straighten the kink and restore flow. Increasing pressure risks vessel injury.
Which technique is used to shape a microcatheter tip for negotiating tortuous vessels?
Cooling in saline to stiffen the tip
Manual bending without heat application
Laser cutting the distal end
Steam shaping the tip to a desired curve
Steam shaping applies heat and water vapor to set a customized curve on the microcatheter tip, aiding navigation through complex anatomy. Manual bending without heat may not maintain shape.
When is the use of a distal access catheter preferred over a standard guide catheter?
When delivering high-dose contrast for imaging only
When performing only radial artery access diagnostic angiography
When extra distal support is needed for complex intracranial navigation
When treating peripheral vascular lesions exclusively
A distal access catheter extends beyond the guide catheter to provide enhanced support and stability for intracranial device delivery. Standard guide catheters suffice for diagnostic access or peripheral procedures.
What is the target activated clotting time (ACT) during most neurointerventional procedures?
400 - 500 seconds
250 - 300 seconds
150 - 200 seconds
80 - 120 seconds
An ACT of 250 - 300 seconds balances bleeding versus thrombotic risks during catheter-based neurointerventions. Lower or higher ACT values fall outside recommended practice guidelines.
How is proper stent apposition assessed under angiography?
Delayed contrast washout distal to the stent
Visible strut flare at both ends of the stent
No visible contrast gap between stent struts and vessel wall
Immediate post-deployment stent shortening
Complete apposition is confirmed when contrast does not flow between the stent and vessel wall. Gaps or delayed washout suggest incomplete contact or malapposition.
After coil protrusion into the parent artery, which device is best for retrieving the displaced coil without sacrificing the vessel?
Deploying an additional flow diverter
Parent vessel occlusion with coils
A micro-snare retrieval device
Inflating a compliant balloon permanently
A micro-snare device can capture and remove protruded coils while preserving parent vessel patency. Flow diverters or permanent occlusions carry higher risk of branch loss or stroke.
In flow diversion for posterior communicating artery aneurysms, why is knowledge of Pcom patency critical?
To minimize contrast dose during deployment
To reduce radiation exposure during imaging
To prevent hydrocephalus after stent placement
To ensure preserved flow if it serves as a fetal origin of the PCA
A fetal-type Pcom supplies significant posterior circulation. Preserving its flow is essential when placing a flow diverter, as occlusion could lead to infarction.
Post-stent deployment for intracranial stenosis, when should dual antiplatelet therapy be initiated and for how long?
Initiate 24 hours after deployment for 1 month
Only aspirin immediately and no P2Y12 inhibitor
Start 5 days pre-procedure and continue for 3 - 6 months
Begin clopidogrel one month pre-procedure only
Dual antiplatelet therapy started days before stenting reduces acute thrombosis risk and is typically maintained for 3 - 6 months post-procedure per guidelines. Delayed or shorter regimens increase thrombotic complications.
If a stent retriever fails to open fully at the occlusion site, what is the next best step?
Forcefully pull to shear the clot
Abandon retrieval and switch to coils
Slightly withdraw and redeploy the stent retriever
Leave the device and observe angiographically
Withdrawing slightly can relieve vessel curvature tension and improve stent expansion into the clot. Forceful or passive strategies risk vessel injury or failed clot engagement.
In treating a wide-neck bifurcation aneurysm, what is the rationale for Y-stenting?
To create a scaffold across both daughter branches for secure coil containment
To reduce radiation dose to the aneurysm dome
To deliver high-concentration drugs to both branches
To ablate aneurysm tissue via thermal energy
Y-stenting establishes a dual scaffold in bifurcation anatomy, preventing coil prolapse into daughter vessels and enabling dense packing of the aneurysm sac. Other options are unrelated to Y-stenting.
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Learning Outcomes

  1. Analyze neurointerventional device functions in clinical scenarios
  2. Identify key anatomical landmarks crucial for device deployment
  3. Evaluate safety considerations for stent retrievers and coils
  4. Demonstrate catheter navigation techniques under fluoroscopy
  5. Apply device selection criteria based on patient pathology
  6. Master troubleshooting steps for common device malfunctions

Cheat Sheet

  1. Primary functions of neurointerventional devices - Imagine tiny heroes like stent retrievers and coils navigating your brain's highways to rescue blocked vessels or seal off aneurysms. By understanding how these devices physically interact with clots and vessel walls, you'll be ready to make critical, life-saving decisions. Learn more
  2. Key anatomical landmarks for precise deployment - Getting to know the Circle of Willis and major cerebral arteries is like memorizing a secret map - you'll spot safe pathways and avoid hazardous detours. Mastering these landmarks ensures your device lands exactly where it's needed. Learn more
  3. Safety considerations for stent retrievers and coils - Safety first! Be aware of potential complications like coil migration or vessel injury and arm yourself with strategies to retrieve or reposition devices quickly. A clear plan can turn a tricky situation into a textbook success. Learn more
  4. Catheter navigation techniques under fluoroscopy - Picture a video game where your joystick is a catheter and the screen is a live X-ray view - smooth hand-eye coordination is your superpower. Practice controlled, gentle movements and always respect the twists and turns of vessel anatomy. Learn more
  5. Device selection criteria based on patient pathology - Choosing the right tool is like picking the perfect key for a lock: consider aneurysm size, shape, and vessel tortuosity to ensure a snug fit. Tailoring your device choice maximizes efficiency and patient safety. Learn more
  6. Troubleshooting common device malfunctions - When coils wander off or retrieval tools snag, stay calm and follow step-by-step protocols to retrieve or reposition devices. Practicing these recovery moves beforehand turns panic into poise. Learn more
  7. Biomechanical properties of stent retrievers - Dive into the magic of Nitinol's superelasticity, which empowers retrievers to adapt to winding vessels and snap back into shape. Grasping these material quirks helps you predict device behavior in challenging anatomies. Learn more
  8. Hemodynamic principles influencing device performance - Blood flow dynamics and shear stress aren't just physics jargon - they dictate how well your device stays put or captures clots. Tuning into these principles can boost treatment success rates. Learn more
  9. Latest research and case studies - Stay on the cutting edge by diving into fresh studies and real-world case reports on neurointerventional tools and techniques. Continuous learning keeps your skills sharp and your patient outcomes stellar. Learn more
  10. Interpreting imaging modalities - Angiography and fluoroscopy are your windows into the vascular world - learn to read every contour and contrast bubble to verify device placement. Precision in interpretation means precision in treatment. Learn more
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