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  1. Article ; Online: Neuronavigated foraminoplasty, shunt removal, and endoscopic third ventriculostomy in a 54-year-old patient with third shunt malfunction episode: how I do it.

    Guil-Ibáñez, José Javier / Parrón-Carreño, Tesifón / Saucedo, Leandro / Masegosa-González, José

    Acta neurochirurgica

    2023  Volume 165, Issue 11, Page(s) 3289–3296

    Abstract: Background: The application of endoscopic third ventriculostomy (ETV) for the treatment of obstructive hydrocephalus in shunt malfunction represents a paradigm shift, as it allows hydrocephalus to be transformed from a chronic condition treated with an ... ...

    Abstract Background: The application of endoscopic third ventriculostomy (ETV) for the treatment of obstructive hydrocephalus in shunt malfunction represents a paradigm shift, as it allows hydrocephalus to be transformed from a chronic condition treated with an artificial device to a curable disease.
    Methods: We present a 54-year-old male with a diagnosis of idiopathic Sylvian aqueduct stenosis treated with shunt. The patient presented to our institution with symptoms of shunt malfunction and an increase in ventricular size on imaging, which was his third episode throughout his life. Through a right precoronal approach, with prior informed consent from the patient, we performed foraminoplasty, endoscopic third ventriculostomy, and finally removal of the shunt system.
    Conclusion: ETV shows promise as a viable treatment option for shunt malfunction in noncommunicating obstructive hydrocephalic patients. Its potential to avoid VPS-related complications, preserve physiological CSF circulation, and provide an alternative drainage pathway warrants further investigation.
    MeSH term(s) Male ; Humans ; Middle Aged ; Ventriculostomy/adverse effects ; Treatment Outcome ; Third Ventricle/diagnostic imaging ; Third Ventricle/surgery ; Hydrocephalus/surgery ; Hydrocephalus/etiology ; Prostheses and Implants/adverse effects ; Neuroendoscopy/methods
    Language English
    Publishing date 2023-08-30
    Publishing country Austria
    Document type Case Reports ; Journal Article
    ZDB-ID 80010-7
    ISSN 0942-0940 ; 0001-6268
    ISSN (online) 0942-0940
    ISSN 0001-6268
    DOI 10.1007/s00701-023-05777-2
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Neuroendoscopic access to the third ventricle in patients with narrow foramen of monro without stenosis/obstruction: role of foraminoplasty.

    Guil-Ibáñez, José Javier / Gomar-Alba, Mario / García-Pérez, Fernando / Saucedo, Leandro / Narro-Donate, José María / Vargas-López, Antonio José / Parrón-Carreño, Tesifón / Castro-Luna, Gracia M / Contreras-Jiménez, Ascensión / Masegosa-González, José

    Acta neurochirurgica

    2024  Volume 166, Issue 1, Page(s) 197

    Abstract: Object: One of the critical steps for the success of intraventricular neuroendoscopic procedures is the entry into the third ventricle and passage of the endoscopy system through the foramen of Monro (FM). A diameter larger than that of the instrument ... ...

    Abstract Object: One of the critical steps for the success of intraventricular neuroendoscopic procedures is the entry into the third ventricle and passage of the endoscopy system through the foramen of Monro (FM). A diameter larger than that of the instrument used is considered a prerequisite for safely performing the technique, as damage to this structure can lead to alterations in the fornix and vascular structures. When the foramen diameter is narrow and there is no obstruction/stenosis, the role of foraminoplasty in reducing the risk of complications has not been adequately assessed in the literature.
    Methods: A review of endoscopic procedures conducted at our center since 2018 was undertaken. Cases in which preoperative imaging indicated a FM diameter < 6 mm and foraminoplasty technique was applied were examined to determine the technical and functional success of the procedure. The technical success was determined by completing the neuroendoscopic procedure with the absence of macroscopic lesions in the various structures comprising the foramen and without complications in the follow-up imaging tests. Functional success was defined as the absence of cognitive/memory alterations during the 3-month postoperative follow-up. Additionally, a review of the various forms of foraminoplasty described in the literature is conducted.
    Results: In our cohort, six patients were identified with a preoperative FM diameter < 6 mm without obstruction or stenosis. Foraminoplasty was planned for these cases to facilitate various intraventricular neuroendoscopic procedures. In all instances, the technique was successfully performed without causing macroscopic damage to the structures comprising the foramen. Follow-up visits included various cognitive tests to assess potential sequelae related to microscopic damage to the fornix. None of the patients exhibited anomalies.
    Conclusion: Foraminoplasty in patients with a narrow FM without signs of stenosis/obstruction is a useful technique to reduce the risk of complications during the passage of the endoscopy system through this structure, enabling the safe performance of neuroendoscopic procedures.
    MeSH term(s) Humans ; Neuroendoscopy/methods ; Male ; Female ; Third Ventricle/surgery ; Third Ventricle/diagnostic imaging ; Adult ; Middle Aged ; Hydrocephalus/surgery ; Hydrocephalus/diagnostic imaging ; Adolescent ; Young Adult ; Child ; Retrospective Studies ; Treatment Outcome ; Aged
    Language English
    Publishing date 2024-04-29
    Publishing country Austria
    Document type Journal Article
    ZDB-ID 80010-7
    ISSN 0942-0940 ; 0001-6268
    ISSN (online) 0942-0940
    ISSN 0001-6268
    DOI 10.1007/s00701-024-06077-z
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Dynamic Workflow Proposal for Continuous Frameless Electromagnetic Neuronavigation in Rigid Neuroendoscopy.

    Gomar-Alba, Mario / Guil-Ibáñez, José Javier / Ruiz-García, José Luis / Plá-Ruiz, José Miguel / García-Pérez, Fernando / Vargas-López, Antonio José / Saucedo, Leandro / Castelló-Ruiz, María José / Urreta-Juárez, Gaizka / Bravo-Garrido, Gema / Castro-Luna, Gracia María / Parrón-Carreño, Tesifón / Masegosa-González, José

    World neurosurgery

    2024  Volume 187, Page(s) 19–28

    Abstract: Background: Ventriculoscopic neuronavigation has been described in several articles. However, there are different ventriculoscopes and navigation systems. Due to these different combinations, it is difficult to find detailed neuronavigation protocols. ... ...

    Abstract Background: Ventriculoscopic neuronavigation has been described in several articles. However, there are different ventriculoscopes and navigation systems. Due to these different combinations, it is difficult to find detailed neuronavigation protocols. We describe, step-by-step, a simple method to navigate both the trajectory until reaching the ventricular system, as well as the intraventricular work.
    Methods: We use a rigid ventriculoscope (LOTTA, KarlStorz) with an electromagnetic stylet (S8-StealthSystem, Medtronic). The protocol is based on a modified or 3-dimensionally printed trocar for navigating the extraventricular step and on a modified pediatric nasogastric tube for the intraventricular navigation.
    Results: This protocol can be set up in less than 10 minutes. The extraventricular part is navigated by introducing the electromagnetic stylet inside the modified or 3-dimensionally printed trocar. Intraventricular navigation is done by combining a modified pediatric nasogastric tube with the electromagnetic stylet inside the endoscope's working channel. The most critical point is to obtain a blunt-bloodless ventriculostomy while achieving perfect alignment of all targeted structures via pure straight trajectories.
    Conclusions: This protocol is easy-to-set-up, avoids head rigid-fixation and bulky optical-based attachments to the ventriculoscope, and allows continuous navigation of both parts of the surgery. Since we have implemented this protocol, we have noticed a significant enhancement in both simple and complex ventriculoscopic procedures because the surgery is dramatically simplified.
    Language English
    Publishing date 2024-04-05
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2534351-8
    ISSN 1878-8769 ; 1878-8750
    ISSN (online) 1878-8769
    ISSN 1878-8750
    DOI 10.1016/j.wneu.2024.04.008
    Database MEDical Literature Analysis and Retrieval System OnLINE

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