Clinical Scorecard: Endovascular Recanalization through the Ascending Cervical Artery for Occlusion of Non-Conical Stump Vertebral Artery: A Case Study

At a Glance

Key Highlights

• VAO is a significant cause of posterior circulation ischemic stroke, often due to atherosclerosis.
• Endovascular recanalization success is higher in tapered stump VAO; non-tapered stumps pose technical challenges.
• Retrograde endovascular approach via collateral arteries (ascending cervical artery) can enable recanalization of non-tapered stump VAO.

Guideline-Based Recommendations

Diagnosis

• Use computed tomography angiography (CTA) and digital subtraction angiography (DSA) to identify VAO location and stump morphology.
• Assess collateral circulation pathways such as ascending cervical and deep cervical arteries.

Management

• Administer antiplatelet therapy and control cerebrovascular risk factors (e.g., hypertension, diabetes).
• Consider endovascular recanalization for symptomatic VAO, especially when medical therapy is insufficient.
• Use retrograde endovascular approaches via collateral arteries for non-tapered stump occlusions.

Monitoring & Follow-up

• Monitor neurological status using NIH Stroke Scale and modified Rankin Scale.
• Perform imaging follow-up to assess vessel patency and cerebral perfusion.
• Observe for perioperative complications during and after endovascular procedures.

Risks

• Perioperative complications occur in approximately 10.9% of endovascular recanalizations.
• Technical failure rates are higher in non-tapered stump occlusions due to difficulty crossing the occlusion.

Patient & Prescribing Data

Patients with symptomatic vertebral artery occlusion including those with non-tapered stump morphology

Intravenous tirofiban infusion was used perioperatively to reduce thrombotic risk; endovascular recanalization via collateral arteries can restore blood flow and resolve ischemic symptoms.

Clinical Best Practices

• Perform detailed angiographic assessment to identify collateral pathways for alternative access routes.
• Use a stepwise approach with various guidewires (e.g., Command, GAIA series) to cross difficult occlusions.
• Administer antiplatelet agents such as tirofiban perioperatively to minimize thrombotic complications.
• Consider local anesthesia for endovascular procedures to allow neurological monitoring during intervention.

References

• Study on endovascular recanalization success rates in VAO
• Case report of retrograde endovascular approach via ascending cervical artery