CSF Gusher Complication: Literature review on Cochlear Implants and Outcomes

CSF Gusher Complication: Literature review on Cochlear Implants and Outcomes | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Systematic Review CSF Gusher Complication: Literature review on Cochlear Implants and Outcomes Bhavik Singh, Nolan Gillihan, William Jones, Matthew Alexander, and 1 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-6559750/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract Background Cochlear implantation is the primary treatment for severe to complete hearing loss, and though it is generally considered to be a safe procedure, there are some associated side effects. A CSF gusher is a notable side effect that involves profuse CSF leakage from the site of cochleostomy, particularly in patients with inner-ear malformations. The purpose of this review is to summarize the risks, complications, and treatment modalities of CSF gushers in cochlear implantation. Methods A literature review was conducted using PubMed. Studies ranged from 2015 to 2025. Inclusion criteria focused on studies discussing gusher complications in pediatric patients undergoing cochlear implant surgery. Studies involving non-human subjects, non-English publications, patients over 18 years old, or published prior to 2015 were excluded. Variables such as patient age and gender, clinical presentation, imaging findings, treatment options, and outcomes were recorded. Results CSF gusher complications during cochlear implant procedures remain a major concern in patients with primary inner ear malformations, particularly in conditions like Enlarged Vestibular Aqueduct Syndrome (LVAS), Mondini dysplasia, and incomplete partition types II and III (IP-II, IP-III). One article found cochlear dysplasia in 4 of 5 cases, while another reported 100% gusher occurrence in IP-III patients. Preoperative imaging—CT, HRCT, and MRI—is standard, though not always documented. Most cases linked gushers to cochlear dysplasia, hypoplasia, or wide internal auditory canals, though spontaneous gushers also occurred, indicating varied underlying causes. Conclusion Intraoperative findings are a better diagnostic measure of identifying the severity of CSF leaks compared to imaging. Autologous tissue sealing remains the gold standard for management with potential benefits from electrode modifications. Long-term outcomes are generally favorable, though some patients may need further intervention due to complications. Future research should focus on preoperative risk stratification, alternative treatment techniques, and long-term tracking of CSF gushers. CSF Gusher Cochlear Implant Inner Ear Malformation Cerebrospinal Fluid Figures Figure 1 Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Posted Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. 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Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-6559750","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Systematic Review","associatedPublications":[],"authors":[{"id":450248706,"identity":"9cbb2d16-f57d-4b07-934a-f390efdda272","order_by":0,"name":"Bhavik Singh","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAuElEQVRIiWNgGAWjYBACAwb2AwYJFTZQLhtRWngSCj6cSSNJC4PBx5lth0nQYs5/IHEzz5nzefzt3QkMH8oOE9ZiOSPxsDFPxe1iiTNnNzDOOEeEFoMbDGnGPGduJ26QyN3AzNtGjJbzB8x/87adg2j5S5SWAwkGhjPbDkC0MBKjxXJGToLBhzPJYL8c7DmXTliLOf9xUFTaAUOsd+ODH2XWhLXAQAKIOEC8epiWUTAKRsEoGAVYAQDgSUKkWBe+kwAAAABJRU5ErkJggg==","orcid":"","institution":"Philadelphia College of Osteopathic Medicine","correspondingAuthor":true,"prefix":"","firstName":"Bhavik","middleName":"","lastName":"Singh","suffix":""},{"id":450248707,"identity":"059e8b1c-8628-4c13-a04c-a2c4547f590c","order_by":1,"name":"Nolan Gillihan","email":"","orcid":"","institution":"Philadelphia College of Osteopathic Medicine","correspondingAuthor":false,"prefix":"","firstName":"Nolan","middleName":"","lastName":"Gillihan","suffix":""},{"id":450248708,"identity":"783ae48b-3533-4531-a6e5-dd44ce27d807","order_by":2,"name":"William Jones","email":"","orcid":"","institution":"Philadelphia College of Osteopathic Medicine","correspondingAuthor":false,"prefix":"","firstName":"William","middleName":"","lastName":"Jones","suffix":""},{"id":450248709,"identity":"7e7b97a8-8d69-4c78-a6ca-65e92fb62729","order_by":3,"name":"Matthew Alexander","email":"","orcid":"","institution":"Philadelphia College of Osteopathic Medicine","correspondingAuthor":false,"prefix":"","firstName":"Matthew","middleName":"","lastName":"Alexander","suffix":""},{"id":450248710,"identity":"1ab13825-8345-46ba-ad03-4b4c250f2609","order_by":4,"name":"Donald Penney","email":"","orcid":"","institution":"Philadelphia College of Osteopathic Medicine","correspondingAuthor":false,"prefix":"","firstName":"Donald","middleName":"","lastName":"Penney","suffix":""}],"badges":[],"createdAt":"2025-04-29 23:23:04","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-6559750/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-6559750/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":81966173,"identity":"0856fbff-05b4-4f2d-bd78-8878ac7638a1","added_by":"auto","created_at":"2025-05-05 11:35:16","extension":"jpeg","order_by":1,"title":"Figure 1","display":"","copyAsset":false,"role":"figure","size":72636,"visible":true,"origin":"","legend":"\u003cp\u003e\u003cem\u003eExclusion Criteria Flowchart\u003c/em\u003e\u003c/p\u003e","description":"","filename":"floatimage1.jpeg","url":"https://assets-eu.researchsquare.com/files/rs-6559750/v1/d4ed167ff082bffa6a654efb.jpeg"}],"financialInterests":"No competing interests reported.","formattedTitle":"CSF Gusher Complication: Literature review on Cochlear Implants and Outcomes","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":true,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":true,"hideJournal":true,"highlight":"","institution":"","isAcceptedByJournal":false,"isAuthorSuppliedPdf":false,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true},"keywords":"CSF Gusher, Cochlear Implant, Inner Ear Malformation, Cerebrospinal Fluid","lastPublishedDoi":"10.21203/rs.3.rs-6559750/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-6559750/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003e\u003cb\u003eBackground\u003c/b\u003e\u003c/p\u003e \u003cp\u003eCochlear implantation is the primary treatment for severe to complete hearing loss, and though it is generally considered to be a safe procedure, there are some associated side effects. A CSF gusher is a notable side effect that involves profuse CSF leakage from the site of cochleostomy, particularly in patients with inner-ear malformations. The purpose of this review is to summarize the risks, complications, and treatment modalities of CSF gushers in cochlear implantation.\u003c/p\u003e\u003cp\u003e\u003cb\u003eMethods\u003c/b\u003e\u003c/p\u003e \u003cp\u003eA literature review was conducted using PubMed. Studies ranged from 2015 to 2025. Inclusion criteria focused on studies discussing gusher complications in pediatric patients undergoing cochlear implant surgery. Studies involving non-human subjects, non-English publications, patients over 18 years old, or published prior to 2015 were excluded. Variables such as patient age and gender, clinical presentation, imaging findings, treatment options, and outcomes were recorded.\u003c/p\u003e\u003cp\u003e\u003cb\u003eResults\u003c/b\u003e\u003c/p\u003e \u003cp\u003eCSF gusher complications during cochlear implant procedures remain a major concern in patients with primary inner ear malformations, particularly in conditions like Enlarged Vestibular Aqueduct Syndrome (LVAS), Mondini dysplasia, and incomplete partition types II and III (IP-II, IP-III). One article found cochlear dysplasia in 4 of 5 cases, while another reported 100% gusher occurrence in IP-III patients. Preoperative imaging\u0026mdash;CT, HRCT, and MRI\u0026mdash;is standard, though not always documented. Most cases linked gushers to cochlear dysplasia, hypoplasia, or wide internal auditory canals, though spontaneous gushers also occurred, indicating varied underlying causes.\u003c/p\u003e\u003cp\u003e\u003cb\u003eConclusion\u003c/b\u003e\u003c/p\u003e \u003cp\u003eIntraoperative findings are a better diagnostic measure of identifying the severity of CSF leaks compared to imaging. Autologous tissue sealing remains the gold standard for management with potential benefits from electrode modifications. Long-term outcomes are generally favorable, though some patients may need further intervention due to complications. Future research should focus on preoperative risk stratification, alternative treatment techniques, and long-term tracking of CSF gushers.\u003c/p\u003e","manuscriptTitle":"CSF Gusher Complication: Literature review on Cochlear Implants and Outcomes","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2025-05-05 11:35:11","doi":"10.21203/rs.3.rs-6559750/v1","editorialEvents":[{"type":"communityComments","content":0}],"status":"published","journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true}}],"origin":"","ownerIdentity":"42befcca-2290-4f61-a914-9ab48181d012","owner":[],"postedDate":"May 5th, 2025","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"posted","subjectAreas":[],"tags":[],"updatedAt":"2025-10-26T04:38:35+00:00","versionOfRecord":[],"versionCreatedAt":"2025-05-05 11:35:11","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-6559750","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-6559750","identity":"rs-6559750","version":["v1"]},"buildId":"8U1c8b4HqxoKbykW_rLl7","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}