• Neurosurgery · Aug 2021

    Pipeline Embolization Devices for the Treatment of Intracranial Aneurysms, Single-Center Registry: Long-Term Angiographic and Clinical Outcomes from 1000 Aneurysms.

    • Ivan Lylyk, Esteban Scrivano, Javier Lundquist, Angel Ferrario, Carlos Bleise, Nicolas Perez, Pedro Nicolas Lylyk, Rene Viso, Rodolfo Nella-Castro, and Pedro Lylyk.
    • Department of Interventional Neuroradiology and Neurosurgery, Instituto Médico ENERI-Clínica La Sagrada Familia, Buenos Aires, Argentina.
    • Neurosurgery. 2021 Aug 16; 89 (3): 443-449.

    BackgroundProspective studies have established the safety and efficacy of the PipelineTM Embolization Device (PED; Medtronic) for treatment of intracranial aneurysms (IA).ObjectiveTo investigate long-term outcomes from the Pipeline Embolization Devices for the Treatment of Intracranial Aneurysms (PEDESTRIAN) Registry.MethodsThe PEDESTRIAN Registry data were retrospectively reviewed, which included patients (March 2006 to July 2019) with complex IAs treated with PED. Patients with unfavorable anatomy and/or recurrence following previous treatment were included and excluded those with acute subarachnoid hemorrhage. The primary angiographic endpoint was complete occlusion and long-term stability. Clinical and radiological follow-up was performed at 3 to 6 mo, 12 mo, and yearly thereafter.ResultsA total of 835 patients (mean age 55.9 ± 14.7 yr; 80.0% female) with 1000 aneurysms were included. Aneurysms varied in size: 64.6% were small (≤10 mm), 25.6% were large (11-24 mm), and 9.8% were giant (≥25 mm). A total of 1214 PEDs were deployed. Follow-up angiography was available for 85.1% of patients with 776 aneurysms at 24.6 ± 25.0 mo (mean). Complete occlusion was demonstrated in 75.8% of aneurysms at 12 mo, 92.9% at 2 to 4 yr, and 96.4% at >5 yr. During the postprocedural period, modified Rankin Scale scores remained stable or improved in 96.2% of patients, with stability or improvement in 99.1% of patients >5 yr. The overall major morbidity and neurological mortality rate was 5.8%.ConclusionThis study demonstrated high rates of long-term complete aneurysm occlusion, stable or improved functional outcomes, and low rates of complications and mortality. Clinical and angiographic outcomes improved over long-term follow-up, demonstrating that endovascular treatment of IA with PED is safe and effective.© Congress of Neurological Surgeons 2021.

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