Reviving Intracranial Angioplasty and Stenting "SAMMPRIS and beyond"

Area of Science:

• Neurology
• Interventional Neurology
• Clinical Trials

Background:

• The Stenting and Aggressive Medical Management for Preventing Recurrent Stroke (SAMMPRIS) trial investigated stroke prevention strategies.
• Previous trials like Warfarin-Aspirin Symptomatic Intracranial Disease (WASID) explored medical management for intracranial occlusive disease.

Purpose of the Study:

• To critically review the methods, results, strengths, and limitations of the SAMMPRIS trial.
• To assess the comparative effectiveness of aggressive medical treatment versus stenting plus aggressive medical treatment for secondary stroke prevention.

Main Methods:

• Review of the SAMMPRIS trial methodology and outcomes.
• Comparative analysis of the aggressive medical treatment (AMT) arm versus the Wingspan Stenting plus aggressive medical management (WS+) arm.
• Examination of early post-intervention complications as a factor in treatment disparity.

Main Results:

• The aggressive medical treatment arm demonstrated superior outcomes compared to the Wingspan Stenting plus aggressive medical management arm.
• Early complications within 30 days post-intervention significantly contributed to the observed disparity between treatment groups.
• The trial highlighted the potential benefits of aggressive medical treatment and lifestyle changes for stroke prevention, though results remain unreproduced.

Conclusions:

• Technical limitations of the Wingspan stent system and the absence of an angioplasty-only arm may have influenced trial outcomes and led to early termination.
• Future randomized trials with improved devices and refined patient selection criteria are necessary to further investigate stroke prevention strategies.