# Flow Diverter Stents for the Endovascular Treatment of Ruptured Intracranial Aneurysms: An Analysis of a Case Series

## TL;DR

This study examines the effectiveness of flow diverter stents in treating ruptured brain aneurysms, finding high success rates and few complications in a small patient group.

## Contribution

The paper presents a novel case series analysis of flow diverter use in ruptured intracranial aneurysms, highlighting its potential as a treatment option.

## Key findings

- 14 out of 15 patients showed complete aneurysm occlusion after 12 months.
- Three patients experienced parent vessel occlusion associated with the flow diverter.
- 86.7% of patients had a favorable functional outcome (mRS 0-2).

## Abstract

Objective

This study aimed to describe the clinical outcomes, complications, and aneurysm occlusion of patients with aneurysmal subarachnoid hemorrhage treated with a flow diverter in our institute.

Methods

This is a retrospective study of the clinical and imaging characteristics in patients with aneurysmal subarachnoid hemorrhage treated by endovascular approach using a flow diverter device from January 2019 to May 2024 at the Specialty Hospital, La Raza National Medical Center, Mexico. The information was obtained through the analysis of clinical records and imaging.

Imaging controls were obtained through digital subtraction angiography (DSA) and/or CT angiography (CTA) performed during the 12 months post-treatment. For statistical analysis, IBM SPSS Statistics for Windows, Version 25.0 (IBM Corp., Armonk, New York, United States), was used, with normality assessed using the Shapiro-Wilk test. Data were expressed as absolute frequencies, percentages, mean, and standard deviation. Additionally, the results are presented in descriptive tables for each patient.

Results

Fifteen patients were analyzed, of whom 73.3% were women and 26.7% were men. No patient experienced rebleeding or died during the 12-month follow-up period. On the 12-month follow-up imaging studies, 14 patients (93.3%) showed complete aneurysm occlusion. Three patients (20%) presented parent vessel occlusion associated with the flow diverter. Thirteen patients (86.7%) had a favorable functional outcome (modified Rankin scale (mRS) 0-2).

Conclusions

The use of flow diverters in patients with ruptured intracranial aneurysms can be considered an effective and viable alternative in carefully selected cases. Prospective studies with larger sample sizes are needed to evaluate their efficacy and safety.