Failure of Flow Diverter Therapy: Predictors and Management Strategies

Area of Science:

• Endovascular neurosurgery
• Cerebrovascular disease management

Background:

• Flow diversion is a primary treatment for brain aneurysms.
• Aneurysm persistence after flow diversion occurs in at least 5% of cases, even with long-term follow-up.
• Understanding factors associated with treatment failure is crucial for optimizing patient care.

Purpose of the Study:

• To review and highlight variables associated with aneurysm persistence after flow diversion treatment.
• To guide preoperative treatment decisions and enhance follow-up monitoring protocols.
• To establish best practices for re-treatment of persistent aneurysms.

Main Methods:

• Review of published clinical series on flow diversion for brain aneurysms.
• Analysis of factors implicated in aneurysm persistence.
• Inclusion of illustrative examples from clinical practice.

Main Results:

• Anatomic and functional characteristics influencing aneurysm persistence are increasingly described.
• Preoperative identification of these factors can inform initial treatment choices.
• These factors also guide post-treatment monitoring and re-treatment strategies.

Conclusions:

• Flow diversion is a valuable tool, but aneurysm persistence remains a clinical challenge.
• Identifying predictive factors for persistence is key to refining flow diversion therapy.
• This knowledge aids in optimizing management and improving outcomes for persistent brain aneurysms.