• World Neurosurg · May 2024

    Review Meta Analysis

    LONG-TERM SAFETY AND EFFICACY OF PIPELINE EMBOLIZATION DEVICE IN ANTERIOR AND POSTERIOR CIRCULATION ANEURYSMS: A SYSTEMATIC REVIEW AND META-ANALYSIS.

    • Elena Greco, Abdul Karim A Ghaith, Jorge Rios-Zermeno, Marc Ghanem, Carlos Perez-Vega, Samir Kashyap, W David Freeman, David A Miller, Thien J Huynh, Mohamad Bydon, Erik H Middlebrooks, Sukhwinder J S Sandhu, and Rabih G Tawk.
    • Research Fellow in the Department of Radiology, Mayo Clinic School of Graduate Medical Education, Mayo Clinic College of Medicine and Science, Jacksonville, Florida, USA; Research Fellow in the Department of Neurologic Surgery, Mayo Clinic School of Graduate Medical Education, Mayo Clinic College of Medicine and Science, Jacksonville, Florida, USA.
    • World Neurosurg. 2024 May 1; 185: 103112103-112.

    BackgroundFlow diversion using the pipeline embolization device (PED) has been a paradigm shift for anterior circulation (AC) aneurysms. However, only a few studies report the long-term (≥1 year) angiographic and clinical outcomes for posterior circulation (PC) aneurysms. This study aims to compare the long-term safety and efficacy of treatment of AC and PC aneurysms with PED.MethodsThe databases included Ovid MEDLINE, Ovid EMBASE, Ovid Cochrane, and Scopus. Studies with at least 10 patients and 1-year follow-up were included. Twenty-four studies met our inclusion criteria. A random effect meta-analysis was performed to estimate the ischemic and hemorrhagic complications. A meta-analysis of proportions was performed to estimate the pooled rates of long-term complete aneurysmal occlusion, symptomatic stroke, aneurysmal rupture, and intracranial hemorrhage.ResultsThere were 1952 aneurysms, of which 1547 (79.25%) were in the AC and 405 (20.75%) in the PC. The 1-year occlusion rate was 78% in AC compared to 73% in PC aneurysms (P < 0.01). The symptomatic infarct rate was 5% in AC compared to 13% in PC (P < 0.01). While the rupture rate was 1% in AC compared to 4% in PC (P = 0.01), the rate of intracranial hemorrhage was 2% for both (P = 0.99).ConclusionsThe long-term occlusion rate after PED was higher in AC aneurysms, and the cumulative incidence of stroke and aneurysm rupture was higher in PC aneurysms.Copyright © 2024 Elsevier Inc. All rights reserved.

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