Abstract
Cerebrospinal fluid (CSF)-venous fistula can cause spontaneous intracranial hypotension (SIH) and poses a significant diagnostic and management challenge. This study aims to provide a comprehensive overview of the clinical and radiological outcomes of endovascular embolization as a novel treatment approach for CSF-venous fistula in patients with SIH. This systematic review adheres to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses 2020 statement. The primary outcome was the efficacy of the embolization procedure in occlusion of the CSF-venous fistula, and secondary outcomes included procedural complications and improvement of clinical symptoms and radiological findings. A total of nine studies consisting of 77 patients met the inclusion criteria. Orthostatic and/or Valsalva headache was the most common symptom. The mean age of the patients was 57 ± 8.9 years, and females accounted for 59.7% (46/77) of the cases. Sixty-five (84.4%) patients reported complete resolution or significant improvement in symptoms. The Bern score, Headache Impact Test-6, and the Patient Global Impression of Change scales demonstrated significant improvements in radiological findings and patients’ quality of life. Following the procedure, 22 patients (28.6%) experienced rebound intracranial hypertension and 27 patients (35.1%) had transient local pain at the site of the embolization. Our study showed that endovascular embolization is a safe and effective treatment for CSF-venous fistula in patients with SIH, providing complete resolution or significant improvement of clinical symptoms and radiological findings, and positive impacts on patients’ quality of life.
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The data that support the findings of this study are available from the corresponding author, A.O., upon reasonable request.
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A.O. designed the concept, collected the data, analyzed and interpreted the data, and drafted the paper. Y.C.S. contributed to the scanning process, study selection, and data extraction, and reviewed submitted version of manuscript. B.M. contributed to the scanning process, study selection, and data extraction, and reviewed submitted version of manuscript. H.K. contributed to administrative, technical, and material support, and reviewed submitted version of manuscript. G.B.B. contributed to administrative and technical support, and reviewed submitted version of manuscript. S.Z. contributed to technical support, and reviewed submitted version of manuscript. C.B. reviewed submitted version of manuscript. M.P. reviewed submitted version of manuscript. W.B. designed the concept, interpreted the data, critically revised the paper, supervised, and reviewed submitted version of manuscript. All authors read and approved the final manuscript.
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This systematic review involved the analysis and synthesis of previously published data and information from electronic databases. The study did not involve direct interaction with human participants, the collection of new primary data, or the use of sensitive personal information. As a result, ethical approval was not deemed necessary for this study.
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W.B. holds equity in Nested Knowledge, Superior Medical Editors, Piraeus Medical, Sonoris Medical, and MIVI Neurovascular. He receives royalties from Medtronic and Balloon Guide Catheter Technology. He receives consulting fees from Medtronic, Stryker, Imperative Care, MicroVention, MIVI Neurovascular, Cerenovus, Asahi, and Balt. He serves in a leadership or fiduciary role for MIVI Neurovascular, Marblehead Medical LLC, Interventional Neuroradiology (Editor-in-Chief), Piraeus Medical, and WFITN. The remaining authors have no conflicts of interest to declare.
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Orscelik, A., Senol, Y.C., Musmar, B. et al. Endovascular embolization of cerebrospinal fluid-venous fistula: a comprehensive systematic review on its efficacy and safety for the management of spontaneous intracranial hypotension. Neurosurg Rev 47, 28 (2024). https://doi.org/10.1007/s10143-023-02264-1
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DOI: https://doi.org/10.1007/s10143-023-02264-1