• World Neurosurg · Jun 2022

    Review

    Evolution of intracranial-intracranial bypass surgery: a bibliometric analysis.

    • Vamsi P Reddy, Andreas Seas, Nitish Sood, Visish M Srinivasan, Joshua S Catapano, and Michael T Lawton.
    • Department of Neurosurgery, Medical College of Georgia, Augusta, Georgia, USA.
    • World Neurosurg. 2022 Jun 1; 162: 177182.e9177-182.e9.

    ObjectiveModern cerebrovascular bypass surgery uses either extracranial-intracranial (EC-IC) or intracranial-intracranial (IC-IC) approaches. Compared with EC-IC bypasses, IC-IC bypasses allow neurosurgeons to safely address tumors, aneurysms, and other lesions using shorter grafts that are well matched to the size of recipient vessels. Fewer than 100 articles have been published on IC-IC bypasses compared with more than 1000 on EC-IC bypasses. This study examined the increase of interest and innovation in IC-IC bypass.MethodsPubMed and Web of Science were searched using keywords specific to IC-IC bypass, yielding 717 articles supplemented with 36 reports from other databases and gray literature. The articles were reviewed, and 98 articles were selected for further evaluation. Final articles were categorized as innovations or retrospective studies. Publication metrics were passed through an analytic program to assess statistical measures of growth.ResultsThe number of publications describing innovations (n = 52) and retrospective studies (n = 46) in IC-IC surgical techniques increased exponentially (R2 = 0.983 and R2 = 0.993, respectively), with both interest and research in the field increasing. The rate of publications in each group also increased. In recent years, increasing numbers of global institutions have researched and published on IC-IC bypasses.ConclusionsAs more work is undertaken on IC-IC bypasses, it is critical for knowledge to be shared through research, collaboration, publication, and early teaching within residency training programs. This field has increased exponentially in the past 2 decades and has yet to reach an inflection point, indicating possible additional interest and growth over time.Copyright © 2022 Elsevier Inc. All rights reserved.

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