Safety and efficacy of Surpass Evolve Flow diverter for intracranial aneurysms: A study of 116 patients

Background and purpose: Flow diverter embolization is a recognized method for treating intracranial aneurysms. This study evaluates the safety and efficacy of the Surpass Evolve flow diverter in treating intracranial aneurysm. Material and methods: From May 2019 to June 2022, our center prospectively enrolled patients presenting with both ruptured and unruptured intracranial aneurysms. We assessed aneurysm occlusion, along with the occurrence of ischemic and hemorrhagic complications, and mortality at 6-months. The 3-month occlusion rate was determined using MR angiography, while the 6-month occlusion rate employed the O'Kelly-Marotta (OKM) grading scale on DSA. Results: A total of 116 patients with 120 aneurysms received treatment with the Surpass Evolve device. The average aneurysm size was 6.6 mm (range: 2- 30 mm). All patients were administered two loading doses of ticagrelor (180 mg) one day before the procedure and 2 h pre- embolization. A procedural complication occurred in one case, involving wire-related perforation of an M3 branch distant from the giant aneurysm; however, this evolved favorably. There were no reported deaths linked to the treatment. Permanent neurological deficits were observed in 3 (2.5%) patients, primarily due to early in- stent thrombosis. MR angiography results at 3 months indicated complete occlusion for 87 out of 115 ( 75.6%) monitored aneurysms. The 6-month DSA showed neck remnant or complete occlusion (OKM grade C or D) in 86 out of the 107 ( 80.4%) patients who underwent follow- up. Conclusion: The Surpass Evolve stands out as a reliable and effective flow diverter for the management of intracranial aneurysms.