Prophylactic Dual Catheter Technique to Prevent Side Branch Snowplowing Complications during Angioplasty and Stenting

Area of Science:

• Neurology
• Interventional Neuroradiology
• Vascular Surgery

Background:

• Intracranial atherosclerotic lesions treated with angioplasty and stenting carry a high complication rate.
• Side branch arterial occlusion, due to atheroma displacement or snowplowing, is a major cause of complications.
• Occlusion can lead to severe disabilities from infarcts in critical brain areas.

Purpose of the Study:

• To present a novel dual catheter technique for maintaining vessel patency during intracranial angioplasty and stenting.
• To evaluate the safety and efficacy of this technique in preventing side branch occlusion.

Main Methods:

• A series of 6 cases utilizing a new dual catheter technique was presented.
• The technique involves a physical presence in the vessel ostia to protect it during the procedure.
• This contrasts with previous methods lacking direct ostial protection.

Main Results:

• All 6 patients successfully underwent angioplasty and stenting using the dual catheter technique.
• Post-procedure magnetic resonance imaging revealed no complications in any of the patients.
• The technique effectively maintained the patency of at-risk vessels.

Conclusions:

• The dual catheter technique demonstrated safety and efficacy in preventing adjacent branch artery occlusion.
• This method shows promise for facilitating the use of the Wingspan stent for intracranial atherosclerotic stenosis.
• It may significantly reduce the risk of peri-procedural stroke in neurovascular interventions.