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Chen SM, Chen LY, Lin JH, Salazar N, Yeh TH, Lo WL, Lui TN, Hsieh YC, Chien LN. Comparison of endoscopic third ventriculostomy versus cerebrospinal fluid shunt procedures for the treatment of pediatric hydrocephalus in Taiwan. Childs Nerv Syst 2024; 40:2883-2891. [PMID: 38806857 DOI: 10.1007/s00381-024-06469-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Accepted: 05/16/2024] [Indexed: 05/30/2024]
Abstract
PURPOSE Pediatric hydrocephalus is the most common cause of surgically treatable neurological disease in children. Controversies exist whether endoscopic third ventriculostomy (ETV) or cerebrospinal fluid (CSF) shunt placement is the most appropriate treatment for pediatric hydrocephalus. This study aimed to compare the risk of re-operation and death between the two procedures. METHODS We performed a retrospective population-based cohort study and included patients younger than 20-years-old who underwent CSF shunt or ETV for hydrocephalus from the Taiwan National Health Insurance Research Database. RESULTS A total of 3,555 pediatric patients from 2004 to 2017 were selected, including 2,340 (65.8%) patients that received CSF shunt placement and 1215 (34.2%) patients that underwent ETV. The incidence of all-cause death was 3.31 per 100 person-year for CSF shunt group and 2.52 per 100 person-year for ETV group, with an adjusted hazard ratio (HR) of 0.79 (95% confidence interval [CI] = 0.66-0.94, p = 0.009). The cumulative incidence competing risk for reoperation was 31.2% for the CSF shunt group and 26.4% for the ETV group, with an adjusted subdistribution HR of 0.82 (95% CI = 0.70-0.96, p = 0.015). Subgroup analysis showed that ETV was beneficial for hydrocephalus coexisting with brain or spinal tumor, central nervous system infection, and intracranial hemorrhage. CONCLUSION Our data indicates ETV is a better operative procedure for pediatric hydrocephalus when advanced surgical techniques and instruments are available.
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Affiliation(s)
- Shu-Mei Chen
- Department of Neurosurgery, Taipei Medical University Hospital, Taipei Medical University, Taipei, Taiwan
- Department of Surgery, School of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Li-Ying Chen
- Health Data Analytics and Statistics Center, Office of Data Science, Taipei Medical University, Taipei, Taiwan
| | - Jiann-Her Lin
- Department of Neurosurgery, Taipei Medical University Hospital, Taipei Medical University, Taipei, Taiwan
- Department of Surgery, School of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Nicole Salazar
- Julius L. Chambers Biomedical/Biotechnology Institute and Department of Biological & Biomedical Sciences, North Carolina Central University, Durham, NC, USA
| | - Tu-Hsueh Yeh
- Department of Neurology, Taipei Medical University Hospital, Taipei Taipei Medical University, Taipei, Taiwan
- Department of Neurology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Wei-Lun Lo
- Department of Surgery, School of Medicine, Taipei Medical University, Taipei, Taiwan
- Department of Neurosurgery, Shuang Ho Hospital, Taipei Medical University, Taipei, Taiwan
| | - Tai-Ngar Lui
- Department of Neurosurgery, Shuang Ho Hospital, Taipei Medical University, Taipei, Taiwan
| | - Yi-Chen Hsieh
- The PhD Program in Medical Neuroscience, College of Medical Science and Technology, Taipei Medical University, 250 Wu-Hsing Street, Taipei, Taiwan.
| | - Li-Nien Chien
- Institute of Health and Welfare Policy, College of Medicine, National Yang Ming Chiao Tung University, No.155, Sec. 2, Linong St., Beitou District, Taipei, Taiwan.
- Graduate Institute of Data Science, College of Management, Taipei Medical University, Taipei, Taiwan.
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Alfin DJ, Shilong DJ, Bot GM, Thango N, Bakwa ND, Olalere SA. Ensuring Neurosurgical Equity: Setup for Safe Ventricular Endoscopy and Predictors of Clinical Outcome in a Resource-Limited Health Care System. World Neurosurg 2024; 191:128-137. [PMID: 39142385 DOI: 10.1016/j.wneu.2024.08.043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2024] [Revised: 08/04/2024] [Accepted: 08/05/2024] [Indexed: 08/16/2024]
Abstract
BACKGROUND Neuroendoscopic surgeries require specialized equipment, which may not be universally available or equitably distributed in most neurosurgical units of resource-limited healthcare systems. This review reports on the use of locally available resources to perform safe ventricular endoscopic surgeries in patients with hydrocephalus and cystic craniopharyngioma in a resource-limited healthcare system. METHODS This study described the use of locally available resources to perform intraventricular endoscopic surgeries and retrospectively reviewed a 3-year outcome of these surgeries. A 24F, 2-way Foley catheter was used as an endoscopic working sheet. A transparent 9-mm nasotracheal tube served as a retractor and a peel-away sheath. An intravenous fluid administration set was used for irrigation. Finally, a metallic stylet of an external ventricular drain was used for third ventricular floor or cyst wall fenestration. RESULTS There were 21 intraventricular endoscopic surgeries performed consisting of endoscopic third ventriculostomy (ETV), septostomy, cystostomy, and intraventricular biopsy. Four patients died, with 1 death directly related to intraoperative hemorrhage. Most (3/21) of the complications were postoperative cerebrospinal fluid leakage and partial wound dehiscence. Of the 17 surviving patients, the ETV success rate was 82.4% (14/17). Logistic regression analysis revealed that patient age, etiology, Endoscopic Third Ventriculostomy Success Score, and procedure performed were not predictive of ETV success or mortality. CONCLUSIONS Patients accessing neurosurgical care in resource-limited healthcare systems can benefit from safe and successful intraventricular endoscopy. However, this may require the innovative use of locally available resources that can be adapted to local neurosurgical needs.
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Affiliation(s)
- Dumura Jeneral Alfin
- Division of Neurosurgery, Department of surgery, Jos University Teaching Hospital, Jos, Plateau State, Nigeria.
| | - Danaan Joseph Shilong
- Division of Neurosurgery, Department of surgery, Jos University Teaching Hospital, Jos, Plateau State, Nigeria
| | - Gyang Markus Bot
- Division of Neurosurgery, Department of surgery, Jos University Teaching Hospital, Jos, Plateau State, Nigeria
| | - Nqobile Thango
- Division of Neurosurgery, Department of Surgery, Neuroscience institute, University of Cape Town, Cape Town, South Africa
| | - Nenkimun Dirting Bakwa
- Division of Neurosurgery, Department of surgery, Jos University Teaching Hospital, Jos, Plateau State, Nigeria
| | - Shina Abidemi Olalere
- Division of Neurosurgery, Department of surgery, Jos University Teaching Hospital, Jos, Plateau State, Nigeria
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Satoh M, Nakajima T, Ohtani K, Oguma H, Gomi A, Kawai K. Chronic Subdural Hematoma after Endoscopic Third Ventriculostomy for Chronic Obstructive Hydrocephalus: A Case Report. NMC Case Rep J 2024; 11:201-206. [PMID: 39183796 PMCID: PMC11345108 DOI: 10.2176/jns-nmc.2024-0040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Accepted: 05/16/2024] [Indexed: 08/27/2024] Open
Abstract
Endoscopic third ventriculostomy (ETV) is a safe treatment option for chronic obstructive hydrocephalus. However, we encountered a case of chronic subdural hematoma (CSDH) with bilateral large hematoma volumes after ETV for chronic obstructive hydrocephalus. We herein report a rare complication of ETV. The patient was a 53-year-old woman who had been diagnosed with asymptomatic ventricular enlargement with aqueductal stenosis 5 years previously. However, over the course of 5 years, her gait and cognitive function gradually declined. ETV was administered to relieve symptoms. Head Magnetic resonance imaging performed 1 week after ETV indicated bilateral subdural hygroma. Three weeks after ETV, she presented with headache and left incomplete paralysis, and head Computed tomography (CT) demonstrated bilateral CSDH with a large volume hematoma. Burr-hole evacuation and drainage of the bilateral CSDH were performed, after which the symptoms resolved. However, 7 weeks after ETV, she again presented with headache and incomplete right paralysis, and CT revealed bilateral CSDH re-enlargement. After the second burr-hole evacuation and drainage of bilateral CSDH, her symptoms resolved. The bilateral CSDH continued to shrink following the second hematoma evacuation surgery and completely disappeared on CT scan performed 3 months after ETV. Ventricular enlargement due to chronic obstructive hydrocephalus stretches the brain mantle for several years. This long-term stretching may have diminished the brain compliance and led to the development, growth, and recurrence of CSDH. In ETV for chronic obstructive hydrocephalus, surgeons should consider the risk of postoperative CSDH with a high hematoma volume and tendency to recur.
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Affiliation(s)
- Makoto Satoh
- Department of Neurosurgery, Jcihi Medical University, Shimotsuke, Tochigi, Japan
| | - Takeshi Nakajima
- Department of Neurosurgery, Jcihi Medical University, Shimotsuke, Tochigi, Japan
| | - Keisuke Ohtani
- Department of Neurosurgery, Jcihi Medical University, Shimotsuke, Tochigi, Japan
| | - Hirofumi Oguma
- Department of Pediatric Neurosurgery, Jichi Children's Medical Center Tochigi, Jichi Medical University, Shimotsuke, Tochigi, Japan
| | - Akira Gomi
- Department of Pediatric Neurosurgery, Jichi Children's Medical Center Tochigi, Jichi Medical University, Shimotsuke, Tochigi, Japan
| | - Kensuke Kawai
- Department of Neurosurgery, Jcihi Medical University, Shimotsuke, Tochigi, Japan
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Issa M, Younsi A, Paggetti F, Miotk N, Seitz A, Bendszus M, Wisoff JH, Unterberg A, El Damaty A. Heidelberg ETV score to assess success of ETV in patients with occlusive hydrocephalus: a retrospective single-center study. Neurosurg Rev 2023; 46:214. [PMID: 37644240 PMCID: PMC10465657 DOI: 10.1007/s10143-023-02122-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Revised: 08/13/2023] [Accepted: 08/15/2023] [Indexed: 08/31/2023]
Abstract
In aqueduct stenosis, pressure difference below and above level of obstruction leads to bulging of third ventricular floor (TVF) and lamina terminalis (LT). Endoscopic third ventriculocisternostomy (ETV) is the standard treatment in these patients. We tried to assess success of ETV depending on those two radiological changes in aqueduct stenosis. We implemented "Heidelberg ETV score" retrospectively to assess the state of TVF as well as LT in same manner in midsagittal MR image. Every patient had a preoperative, direct, 3-months and one-year postoperative score from -2 to + 2. We correlated the scores to clinical course to decide whether the score is reliable in defining success of ETV. Between 2017-2021, 67 (mean age 25.6 ± 23.9y) patients treated with ETV were included. Success rate of primary and Re-ETVs was 91% over 46.8 ± 19.0 months. A marked shift of score to the left after surgery in success group was noticed through the distribution of score immediate postoperative, 3-months later; 70.2% showed (+ 2) before surgery, 38.9% scored (0) after surgery and 50.9% showed further score drop to (-1) 3 months later, p < 0.001. In cases of failure, there was initial decrease after surgery followed by increase with ETV-failure (mean time to failure: 7.2 ± 5.7 months) in 100%. Significant difference was noticed in Heidelberg score at postoperative 1-year- and failure-MRI follow-up between two groups, p < 0.001. Heidelberg score describes anatomical changes in third ventricle after ETV and can serve in assessment of MR images to define success of the procedure in patients with aqueduct stenosis.
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Affiliation(s)
- Mohammed Issa
- Department of Neurosurgery, Heidelberg University Hospital, Im Neuenheimer Feld 400, 69120, Heidelberg, Germany
| | - Alexander Younsi
- Department of Neurosurgery, Heidelberg University Hospital, Im Neuenheimer Feld 400, 69120, Heidelberg, Germany
| | - Filippo Paggetti
- Department of Neurosurgery, Heidelberg University Hospital, Im Neuenheimer Feld 400, 69120, Heidelberg, Germany
| | - Nikolai Miotk
- Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany
| | - Angelika Seitz
- Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany
| | - Martin Bendszus
- Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany
| | - Jeffrey H Wisoff
- Department of Neurosurgery, Division of Pediatric Neurosurgery, The Hassenfeld Children's Hospital at NYU Langone Health, New York City, NY, USA
| | - Andreas Unterberg
- Department of Neurosurgery, Heidelberg University Hospital, Im Neuenheimer Feld 400, 69120, Heidelberg, Germany
| | - Ahmed El Damaty
- Department of Neurosurgery, Heidelberg University Hospital, Im Neuenheimer Feld 400, 69120, Heidelberg, Germany.
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5
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Kumar S, Sahana D, Rathore L, Jain A, Tawari M, Singh D, Sahu R, Madhariya SN. Extra-axial endoscopic third ventriculostomy: preliminary experience with a technique to circumvent conventional endoscopic third ventriculostomy complications. J Neurosurg 2023; 138:503-513. [PMID: 35901703 DOI: 10.3171/2022.5.jns22589] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2022] [Accepted: 05/16/2022] [Indexed: 02/04/2023]
Abstract
OBJECTIVE Endoscopic third ventriculostomy (ETV) is mostly safe but may have serious complications. Most of the complications are inherent to the procedure's intra-axial nature. This study aimed to explore an alternative route to overcome inherent issues with conventional ETV. The authors performed supraorbital, subfrontal extra-axial ETV (EAETV) via the lamina terminalis. METHODS This prospective study began in October 2021 and included patients with obstructive triventricular hydrocephalus with a Glasgow Coma Scale score of 8 or more and a minimum follow-up of 3 months. Patients with multiloculated hydrocephalus and those younger than 1 year of age were excluded. The preoperative parameters etiology, symptoms, Evans' Index, frontal occipital horn ratio (FOHR), and third ventricle index were recorded. The surgical procedure is described. Postoperative evaluation included clinical (modified Rankin Scale [mRS]) and radiological assessment with CT and cine phase-contrast MRI. Preoperative and postoperative parameters were compared statistically. RESULTS Ten patients were included in this study. Six patients had acute hydrocephalus, and 4 had chronic hydrocephalus. After EAETV, all patients showed clinical improvement. An mRS score of 0 or 1 was achieved in 9 patients, but the mRS score remained at 4 in a patient with tectal tuberculoma. There was a significant reduction in Evans' Index, FOHR, and third ventricle index after EAETV (p < 0.05). The mean percent reduction in Evans' Index was 20.80% ± 13.89%, the mean percent reduction in FOHR was 20.79% ± 12.98%, and the mean percent reduction in the third ventricle index was 37.45% ± 14.74%. CSF flow voids were seen in all cases. The results of CSF flow quantification parameters were as follows: mean peak velocity 3.82 ± 0.93 cm/sec, mean average velocity 0.10 ± 0.05 cm/sec, mean average flow rate 46.60 ± 28.58 μL/sec, mean forward volume 39.90 ± 23.29 μL, mean reverse volume 34.10 ± 15.98 μL, mean overall flow amplitude 74.00 ± 27.61 μL, and mean stroke volume 37.00 ± 13.80 μL. One patient developed a minor frontal lobe contusion. The frontal air sinus was breached in 5 patients, but none had CSF rhinorrhea. Transient supraorbital hypesthesia was seen in 3 patients. No patient had electrolyte disturbance or change in thirst or fluid intake habits. CONCLUSIONS EAETV is a feasible, safe, and effective surgical alternative to conventional ETV.
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Affiliation(s)
- Sanjeev Kumar
- 1Department of Neurosurgery, DKS Post Graduate Institute and Research Center, Raipur Chhattisgarh
| | - Debabrata Sahana
- 1Department of Neurosurgery, DKS Post Graduate Institute and Research Center, Raipur Chhattisgarh
| | - Lavlesh Rathore
- 1Department of Neurosurgery, DKS Post Graduate Institute and Research Center, Raipur Chhattisgarh
| | - Amit Jain
- 1Department of Neurosurgery, DKS Post Graduate Institute and Research Center, Raipur Chhattisgarh
| | - Manish Tawari
- 1Department of Neurosurgery, DKS Post Graduate Institute and Research Center, Raipur Chhattisgarh
| | - Deepak Singh
- 2Department of Neuro-anesthesia, DKS Post Graduate Institute and Research Center, Raipur Chhattisgarh; and
| | - Rajiv Sahu
- 1Department of Neurosurgery, DKS Post Graduate Institute and Research Center, Raipur Chhattisgarh
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Combined Endoscopic Third Ventriculostomy and Lumboperitoneal Shunt Surgery in an Elderly Patient With Complex Hydrocephalus: Mixture of Late-onset Obstructive and Communicating Hydrocephaluses. Dement Neurocogn Disord 2023; 22:46-48. [PMID: 36814701 PMCID: PMC9939571 DOI: 10.12779/dnd.2023.22.1.46] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 01/27/2023] [Accepted: 01/30/2023] [Indexed: 02/17/2023] Open
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7
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Farag AA, Asiri FA, Khoudir MA, Ismaeel M, Hamouda W, Alaghory IM, Moshref RH. Endoscopic third ventriculostomy complications: avoidance and management in a stepwise manner. EGYPTIAN JOURNAL OF NEUROSURGERY 2022. [DOI: 10.1186/s41984-022-00166-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Various complications of endoscopic third ventriculostomy (ETV) have been described. One has to recognize these complications and learn how to avoid them.
Methods
We performed a literature review regarding the reported complications of ETV procedures discussed in a correlated manner with the surgical steps. Furthermore, we reviewed the technical notes described by experienced neuroendoscopists, including surgical indications, choice of the endoscopic entry point and trajectory, anatomic orientation, proper bleeding control and tight closure, to prevent and deal with such complications.
Results and conclusion
A lesson learned that comprehensive knowledge of ventricular anatomy with proper orientation by studying the preoperative images is mandatory and one should be aware of all complication types and rates.
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Shao D, Li Y, Zhang B, Wu J, Xie S, Zheng X, Jiang Z. Endoscope-assisted microneurosurgery for intracranial aneurysms: A systematic review and meta-analysis. J Clin Neurosci 2022; 103:62-71. [PMID: 35816766 DOI: 10.1016/j.jocn.2022.06.029] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Revised: 06/29/2022] [Accepted: 06/30/2022] [Indexed: 11/16/2022]
Abstract
BACKGROUND In the surgical approach to treat deep-seated intracranial lesions, endoscopes can be used to assist microsurgical operations and improve outcomes. This technique is often called endoscope-assisted microneurosurgery (EAM). This systematic review and meta-analysis aimed to evaluate the feasibility, safety, and effectiveness of EAM. METHODS We performed a meta-analysis of relevant articles identified using PubMed, Embase, and the Cochrane Central Register to assess the efficacy of EAM according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) criteria. Primary outcomes were repositioning of the definitive clip, better surgical field, the overall and endoscope-related complication rates, mortality, and the rate of follow up. RESULTS A total of 10 studies of 1,432 patients with 1,717 aneurysms treated with EAM were included. EAM led to repositioning of the definitive clip in 13% (95% CI, 9%-17%; I2 = 72.61%; p < 0.001); 77% of aneurysms treated with endoscopically assisted vision and information had a better outcome than that with standard surgery (95% CI, 52%-95%; I2 = 97.63%; p < 0.001). There was an overall complication rate of 6% (95% CI, 1%-13%; I2 = 91.39%; p < 0.001). The incidence of endoscope-related complications was 0% (95% CI, 0%-1%; I2 = 64%; p < 0.001). The mortality was 0% (95% CI, 0-1%; I2 = 0.0%); and 94% of patients had an excellent to good recovery and good outcome (95% CI, 88%-98%; I2 = 88.42%; p < 0.001). CONCLUSIONS Our comprehensive study showed that EAM for intracranial aneurysms is feasible, the safety of the surgery is good, and the patients have a good prognosis, Therefore, we think EAM can be more widely adopted in the future.
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Affiliation(s)
- Dongqi Shao
- Department of Neurosurgery, The First Affiliated Hospital of Bengbu Medical College, Bengbu 233000, China
| | - Yu Li
- Department of Neurosurgery, The First Affiliated Hospital of Bengbu Medical College, Bengbu 233000, China
| | - Binbin Zhang
- Department of Neurosurgery, The First Affiliated Hospital of Bengbu Medical College, Bengbu 233000, China
| | - Junyong Wu
- Department of Neurosurgery, The First Affiliated Hospital of Bengbu Medical College, Bengbu 233000, China
| | - Shan Xie
- Department of Neurosurgery, The First Affiliated Hospital of Bengbu Medical College, Bengbu 233000, China
| | - Xialin Zheng
- Department of Neurosurgery, The First Affiliated Hospital of Bengbu Medical College, Bengbu 233000, China
| | - Zhiquan Jiang
- Department of Neurosurgery, The First Affiliated Hospital of Bengbu Medical College, Bengbu 233000, China.
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Juhler M, Hansen TS, Novrup HVG, MacAulay N, Munch TN. Hydrocephalus Study Design: Testing New Hypotheses in Clinical Studies and Bench-to-Bedside Research. World Neurosurg 2022; 161:424-431. [PMID: 35505563 DOI: 10.1016/j.wneu.2021.12.100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 12/23/2021] [Accepted: 12/24/2021] [Indexed: 10/18/2022]
Abstract
In this article, we aimed to describe some of the currently most challenging problems in neurosurgical management of hydrocephalus and how these can be reasons for inspiration for and development of research. We chose 4 areas of focus: 2 dedicated to improvement of current treatments (shunt implant surgery and endoscopic hydrocephalus surgery) and 2 dedicated to emerging future treatment principles (molecular mechanisms of cerebrospinal fluid secretion and hydrocephalus genetics).
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Affiliation(s)
- Marianne Juhler
- Department of Neurosurgery, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark; Department of Neurosurgery, Aarhus University Hospital, Aarhus, Denmark; Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark.
| | | | - Hans V G Novrup
- Department of Neurosurgery, Aarhus University Hospital, Aarhus, Denmark
| | - Nanna MacAulay
- Department of Neuroscience, University of Copenhagen, Copenhagen, Denmark
| | - Tina Nørgaard Munch
- Department of Neurosurgery, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark; Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark; Department of Epidemiology Research, Statens Serum Institut, Copenhagen, Denmark
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Palandri G, Carretta A, La Corte E, Giannini G, Martinoni M, Mantovani P, Albini-Riccioli L, Tonon C, Mazzatenta D, Elder BD, Conti A. Open-aqueduct LOVA, LIAS, iNPH: a comparative clinical-radiological study exploring the "grey zone" between different forms of chronic adulthood hydrocephalus. Acta Neurochir (Wien) 2022; 164:1777-1788. [PMID: 35477816 PMCID: PMC9233635 DOI: 10.1007/s00701-022-05215-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Accepted: 04/07/2022] [Indexed: 11/27/2022]
Abstract
Purpose The definition of chronic adult hydrocephalus encompasses different pathological entities with overlapping characteristics, including long-standing overt ventriculomegaly in adults (LOVA), late-onset idiopathic aqueductal stenosis (LIAS) and idiopathic normal pressure hydrocephalus (iNPH). The aim of our study was to identify preoperative clinical and radiological features peculiar of these diseases providing some pathophysiology inferences on these forms of hydrocephalus. Methods Clinical and radiological preoperative records, type of surgical treatment and clinical outcome of patients with chronic adult hydrocephalus who were surgically treated between 2013 and 2019 were retrospectively reviewed. Univariate and multivariate analyses were performed to evaluate the contribution of each variable to the differential diagnosis. Results In total, 105 patients were included: 18 with LOVA, 23 with LIAS and 64 with iNPH. On multivariate analysis, an enlarged cisterna magna and a more severe ventriculomegaly were associated with the diagnosis of LOVA, while an older age and DESH with iNPH. LIAS patients tend to have an higher prevalence of raised ICP symptoms. Based on that, a clinical and radiological scoring system was developed to distinguish between iNPH and no iNPH cases. A precise cut-off value with a sensitivity of 95.1% and a specificity of 90.6% was identified. Conclusions LOVA, LIAS and iNPH are different forms of chronic adulthood hydrocephalus and present different and peculiar clinical and radiological features, with an impact on the treatment and outcome prediction. The implementation of a clinical-radiological score for differential diagnosis may help the differentiation. Further studies are warranted. Supplementary Information The online version contains supplementary material available at 10.1007/s00701-022-05215-9.
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Affiliation(s)
- Giorgio Palandri
- Department of Neurosurgery, IRCCS Istituto Delle Scienze Neurologiche Di Bologna, Via Altura 3, 40139, Bologna, Italy
| | - Alessandro Carretta
- Department of Neurosurgery, IRCCS Istituto Delle Scienze Neurologiche Di Bologna, Via Altura 3, 40139, Bologna, Italy.
- Department of Biomedical and NeuroMotor Sciences (DIBINEM), University of Bologna, Bologna, Italy.
| | - Emanuele La Corte
- Department of Neurosurgery, IRCCS Istituto Delle Scienze Neurologiche Di Bologna, Via Altura 3, 40139, Bologna, Italy
- Department of Biomedical and NeuroMotor Sciences (DIBINEM), University of Bologna, Bologna, Italy
| | - Giulia Giannini
- Department of Biomedical and NeuroMotor Sciences (DIBINEM), University of Bologna, Bologna, Italy
- Neurology Unit (NEUROMET), IRCCS Istituto Delle Scienze Neurologiche Di Bologna, Bologna, Italy
| | - Matteo Martinoni
- Department of Neurosurgery, IRCCS Istituto Delle Scienze Neurologiche Di Bologna, Via Altura 3, 40139, Bologna, Italy
| | - Paolo Mantovani
- Department of Neurosurgery, IRCCS Istituto Delle Scienze Neurologiche Di Bologna, Via Altura 3, 40139, Bologna, Italy
| | - Luca Albini-Riccioli
- Neuroradiology Unit, IRCCS Istituto Delle Scienze Neurologiche Di Bologna, Bologna, Italy
| | - Caterina Tonon
- Department of Biomedical and NeuroMotor Sciences (DIBINEM), University of Bologna, Bologna, Italy
- Functional and Molecular Neuroimaging Unit, IRCCS Istituto Delle Scienze Neurologiche Di Bologna, Bologna, Italy
| | - Diego Mazzatenta
- Department of Biomedical and NeuroMotor Sciences (DIBINEM), University of Bologna, Bologna, Italy
- Programma Neurochirurgia Ipofisi - Pituitary Unit, IRCCS Istituto Delle Scienze Neurologiche Di Bologna, Bologna, Italy
| | - Benjamin D Elder
- Department of Neurologic Surgery, Mayo Clinic, Rochester, MN, USA
| | - Alfredo Conti
- Department of Neurosurgery, IRCCS Istituto Delle Scienze Neurologiche Di Bologna, Via Altura 3, 40139, Bologna, Italy
- Department of Biomedical and NeuroMotor Sciences (DIBINEM), University of Bologna, Bologna, Italy
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11
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Pricop DF, Subotic A, Anghelescu BA, Eagles M, Hamilton M, Roach P. Impacts of the COVID-19 Pandemic on the Healthcare Provision and Lived Experiences of Patients with Hydrocephalus. J Patient Exp 2022; 9:23743735221092555. [PMID: 35434294 PMCID: PMC9006093 DOI: 10.1177/23743735221092555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The emergence of COVID-19 (SARS-CoV-2) led to distancing measures which acutely affected healthcare infrastructure, leading to limited in-person clinical visits and an increased number of virtual appointments. This study aimed to examine the effects this had on adults with hydrocephalus by describing the lived experiences of a cohort of patients at an outpatient hydrocephalus clinic. Between early May and early July of 2020, remote structured interviews were conducted with participants. Interviews were in-depth and open-ended, allowing participants to reflect and expand on the effects of the social distancing mandate on their well-being and quality of care. Three themes emerged: (1) impacts of changes in treatment provision, (2) impacts of changes in mitigating activities, and (3) impacts of changes on personal well-being. The comprehensive understanding of lived experiences may inform the future provision of healthcare services and social policy. Improved approaches to remote care telemedicine have the potential to facilitate high-quality care.
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Affiliation(s)
- Diana F. Pricop
- Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta, Canada
- Department of Clinical Neurosciences, University of Calgary, Calgary, Alberta, Canada
| | - Arsenije Subotic
- Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta, Canada
- Department of Clinical Neurosciences, University of Calgary, Calgary, Alberta, Canada
| | | | - Matthew Eagles
- Department of Clinical Neurosciences, University of Calgary, Calgary, Alberta, Canada
- Department of Community Health Sciences, University of Calgary, Calgary, Alberta, Canada
| | - Mark Hamilton
- Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta, Canada
- Department of Clinical Neurosciences, University of Calgary, Calgary, Alberta, Canada
| | - Pamela Roach
- Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta, Canada
- O’Brien Institute for Public Health, University of Calgary, Calgary, Alberta, Canada
- Department of Family Medicine, University of Calgary, Calgary, Alberta, Canada
- Department of Community Health Sciences, University of Calgary, Calgary, Alberta, Canada
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12
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Surgical Treatment of Long-Standing Overt Ventriculomegaly in Adults (LOVA): A Comparative Case Series between Ventriculoperitoneal Shunt (VPS) and Endoscopic Third Ventriculostomy (ETV). INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19041926. [PMID: 35206112 PMCID: PMC8872207 DOI: 10.3390/ijerph19041926] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/15/2022] [Revised: 02/04/2022] [Accepted: 02/06/2022] [Indexed: 02/01/2023]
Abstract
Background: Long-standing overt ventriculomegaly in adults (LOVA) is an uncommon type of adult chronic hydrocephalus. In recent years, conflicting case series described different outcomes after treatment of LOVA with endoscopic third ventriculostomy (ETV) or ventriculoperitoneal shunt (VPS). The aim of this study is to report a single institutional surgical experience of patients with LOVA in order to evaluate the clinical outcome of those patients treated with one or, sometimes, both surgical procedures, analyzing the main clinical features of these patients, before and after surgery. Methods: We conducted a retrospective study on 31 patients with diagnosis of LOVA, who were treated in our University Hospital between December 2010 and October 2020. We reported gender, age, clinical presentation, surgical treatment, and clinical outcome according to the Kiefer index (KI). Evans’ index, head circumference, aqueductal stenosis and expanded/destroyed sella turcica were assessed on preoperative MRI. Results: The most common clinical manifestation was gait disturbances (100%) followed by urinary incontinence in 23 (74.2%) patients and cognitive deficits in 22 (71%) patients. On preoperative MRI, the overall mean Evans’s Index was 0.49, whereas the overall mean head circumference was 57.3 cm. Twenty-three patients (74.2%) had obliterated cortical sulci, 20 (64.5%) patients had aqueductal stenosis, and 22 (71%) patients had an expanded/destroyed sella turcica on preoperative MRI. Fifteen (48.4%) patients underwent ETV and sixteen (51.6%) were treated with VPS as first surgical procedure. Four (26.6%) out of fifteen patients treated with ETV required a subsequent VPS. The overall median age of patients was 64 (IQR: 54.5–74) and the overall median follow-up was 57 months (IQR 21.5–81.5). Overall morbidity was 22.5%. Mean recovery index (RI), according to KI, was 3.8 ± 4.3 and 2.2 ± 5.6 (p = 0.05) at last follow-up in patients treated with ETV and VPS, respectively. Conclusions: The choice of surgical treatment of LOVA remains under discussion. Although EVT is a tempting option for patients with LOVA, conversion to VP shunt is not uncommon.
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Vemula RCV, Prasad BCM, Kumar K. Endoscopic Third Ventriculostomy: Our Experience of Consecutive 50 Cases at a Tertiary Care Center. INDIAN JOURNAL OF NEUROSURGERY 2022. [DOI: 10.1055/s-0041-1724466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Abstract
Abstract
Objective The aim of this study was to do a retrospective analysis of the various neurosurgical pathologies where endoscopic third ventriculostomy (ETV) was used and to evaluate the outcome and prognosis.
Methods The retrospective data collection was done for the patients who underwent ETV with or without other adjunct procedures; the results were prepared for clinical presentation, diagnosis, surgical approach, and surgical goal; and success rate and prognosis were analyzed and compared with other studies.
Results A total of 50 patients were included in the study, with overall success rate of ETV as 88%; aqueductal stenosis was the most common indication where ETV was used; headache and vomiting were the most common presenting complaints followed by ataxia and visual blurring; and ETV provided flexibility in its use with biopsy, abscess drainage, temporary external ventricular drain placement, etc.
Conclusion ETV being superior to ventriculo-peritoneal shunt for obstructive hydrocephalus provides flexibility in its use and possibly is a useful adjunct to prevent postoperative hydrocephalus after endoscopic intraventricular surgery; proper case selection in accordance to ETV success score yields a better success rate. In experienced hands with proper precautions, perioperative complications can be kept at minimum. Wherever possible, in cases of obstructive hydrocephalus, especially in patients >1 year of age, ETV should be the treatment of choice. We recommend a proper case selection, including preoperative detailed reading of sagittal magnetic resonance imaging scan, to improve the success rate with less complication.
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Affiliation(s)
| | - BCM Prasad
- Department of Neurosurgery, Sri Venkateswara Institute of Medical Sciences (SVIMS), Tirupati, Andhra Pradesh, India
| | - Kunal Kumar
- Department of Neurosurgery, Sri Venkateswara Institute of Medical Sciences (SVIMS), Tirupati, Andhra Pradesh, India
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Gillespie CS, Richardson GE, Mustafa MA, Evans D, George AM, Islim AI, Mallucci C, Jenkinson MD, McMahon CJ. How should we treat long-standing overt ventriculomegaly in adults (LOVA)? A retrospective cohort study. Neurosurg Rev 2022; 45:3193-3200. [PMID: 35688957 PMCID: PMC9492616 DOI: 10.1007/s10143-022-01812-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Revised: 04/16/2022] [Accepted: 05/10/2022] [Indexed: 02/03/2023]
Abstract
Long-standing overt ventriculomegaly in adults (LOVA) is a heterogenous group of conditions with differing presentations. Few studies have evaluated success rates of available surgical treatments, or ascertained the natural history. There is a need to assess the efficacy of both endoscopic third ventriculostomy (ETV) and ventriculoperitoneal shunt (VPS) as first-line treatments. We conducted a retrospective, single-centre study of adults with LOVA at a tertiary neurosurgery centre in England, UK, aiming to identify presentation, management strategy, and outcome following treatment. A total of 127 patients were included (mean age 48.1 years, 61/127 male). Most patients were symptomatic (73.2%, n = 93/127, median symptom duration 10 months). The most common symptoms were gait ataxia, headache, and cognitive decline (52.8%, 50.4%, and 33.9%, respectively). Fourteen patients had papilloedema. Ninety-one patients (71.7%) underwent surgery (84 ETV, 7 VPS). Over a median follow-up of 33.0 months (interquartile range [IQR] 19.0-65.7), 82.4% had a clinical improvement after surgery, and 81.3% had radiological improvement. Clinical improvement rates were similar between ETV and VP shunt groups (82.1% vs 85.7%, p = 0.812). Surgical complication rates were significantly lower in the ETV group than the VP shunt group (4.8% vs 42.9%, p < 0.001). Of the patients treated surgically, 20 (22.0%) underwent further surgery, with 14 patients improving. This study demonstrates the efficacy of ETV as a first-line treatment for LOVA.
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Affiliation(s)
- Conor S. Gillespie
- Institute of Systems, Molecular and Integrative Biology, School of Medicine, University of Liverpool, Cedar House, Ashton Street, Liverpool, L69 3GE UK ,Department of Neurosurgery, The Walton Centre NHS Foundation Trust, Liverpool, UK
| | - George E. Richardson
- Institute of Systems, Molecular and Integrative Biology, School of Medicine, University of Liverpool, Cedar House, Ashton Street, Liverpool, L69 3GE UK ,Department of Neurosurgery, The Walton Centre NHS Foundation Trust, Liverpool, UK
| | - Mohammad A. Mustafa
- Institute of Systems, Molecular and Integrative Biology, School of Medicine, University of Liverpool, Cedar House, Ashton Street, Liverpool, L69 3GE UK ,Department of Neurosurgery, The Walton Centre NHS Foundation Trust, Liverpool, UK
| | - Daisy Evans
- School of Medicine, Keele University, Staffordshire, UK
| | - Alan M. George
- Department of Neurosurgery, The Walton Centre NHS Foundation Trust, Liverpool, UK ,School of Medicine, University of Birmingham, Birmingham, UK
| | - Abdurrahman I. Islim
- Department of Neurosurgery, The Walton Centre NHS Foundation Trust, Liverpool, UK
| | - Conor Mallucci
- Department of Neurosurgery, Alder Hey Children’s NHS Foundation Trust, Liverpool, UK
| | - Michael D. Jenkinson
- Institute of Systems, Molecular and Integrative Biology, School of Medicine, University of Liverpool, Cedar House, Ashton Street, Liverpool, L69 3GE UK ,Department of Neurosurgery, The Walton Centre NHS Foundation Trust, Liverpool, UK
| | - Catherine J. McMahon
- Department of Neurosurgery, The Walton Centre NHS Foundation Trust, Liverpool, UK
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Su GJ, Gao J, Wu CW, Zou JF, Zhu DL, Liu J, Zhang JH, Huang XJ. Long-standing overt ventriculomegaly in adulthood with primary presentation of psychiatric disturbance: A case report. Medicine (Baltimore) 2021; 100:e27794. [PMID: 34889231 PMCID: PMC8663855 DOI: 10.1097/md.0000000000027794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Accepted: 10/29/2021] [Indexed: 01/05/2023] Open
Abstract
RATIONALE Hydrocephalus is a common disease in neurosurgery. The typical symptoms of hydrocephalus include urinary incontinence, gait instability, and cognitive decline. Irritability rarely occurs in patients with hydrocephalus. Irritability rarely occurs in patients with hydrocephalus, especially in long-standing overt ventriculomegaly of adulthood (LOVA). PATIENT CONCERNS A 30-year-old female was admitted to our hospital because of mental retardation and unstable gait for more than 15 years. She had undergone ventriculoperitoneal shunt 15 years prior due to ventriculomegaly and related symptoms. However, the shunt catheter was removed shortly after surgery because of blockage, with no further postoperative treatment. DIAGNOSIS The patient was diagnosed with long-standing overt ventriculomegaly according to her head circumference and clinical symptoms, including adult hydrocephalus development, overt triventriculomegaly and absence of a secondary cause for aqueductal stenosis in adulthood. INTERVENTIONS After considerable discussion, she underwent ventriculoperitoneal shunt placement and showed dramatic and sustained improvement. OUTCOMES The patient has been followed at 3-month intervals for over 2 years since discharge, and both the patient and family have reported a significant change in their daily life. She was able to live independently and control her emotions. Slight epilepsy was noted approximately 5 months after surgery but recovered 2 months later. LESSONS It is difficult to decide whether to treat LOVA when the in patients whose symptoms are not significant. We believe that early diagnosis and positive treatment can help improve outcomes and would recommend ventriculoperitoneal (VP) shunting in patients with LOVA.
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Debs LH, Rahimi SY, Rutkowski MJ, Macomson SD. Endoscopic third ventriculostomy may decrease shunt-dependency in patients with post-hemorrhagic hydrocephalus following aneurysmal subarachnoid hemorrhage. INTERDISCIPLINARY NEUROSURGERY 2021. [DOI: 10.1016/j.inat.2021.101300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Yadav YR, Bajaj J, Ratre S, Yadav N, Parihar V, Swamy N, Kumar A, Hedaoo K, Sinha M. Endoscopic Third Ventriculostomy - A Review. Neurol India 2021; 69:S502-S513. [PMID: 35103009 DOI: 10.4103/0028-3886.332253] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND Endoscopic third ventriculostomy (ETV) has become a proven modality for treating obstructive and selected cases of communicating hydrocephalus. OBJECTIVE This review aims to summarize the indications, preoperative workup, surgical technique, results, postoperative care, complications, advantages, and limitations of an ETV. MATERIALS AND METHODS A thorough review of PubMed and Google Scholar was performed. This review is based on the relevant articles and authors' experience. RESULTS ETV is indicated in obstructive hydrocephalus and selected cases of communicating hydrocephalus. Studying preoperative imaging is critical, and a detailed assessment of interthalamic adhesions, the thickness of floor, arteries or membranes below the third ventricle floor, and prepontine cistern width is essential. Blunt perforation in a thin floor, while bipolar cautery at low settings and water jet dissection are preferred in a thick floor. The appearance of stoma pulsations and intraoperative ventriculostomography reassure stoma and basal cistern patency. The intraoperative decision for shunt, external ventricular drainage, or Ommaya reservoir can be taken. Magnetic resonance ventriculography and cine phase-contrast magnetic resonance imaging can determine stoma patency. Good postoperative care with repeated cerebrospinal fluid drainage enhances outcomes in selected cases. Though the complications mostly occur in an early postoperative phase, delayed lethal ones may happen. Watching live surgeries, assisting expert surgeons, and practicing on cadavers and models can shorten the learning curve. CONCLUSION ETV is an excellent technique for managing obstructive and selected cases of communicating hydrocephalus. Good case selection, methodical technique, and proper training under experts are vital.
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Affiliation(s)
- Yad Ram Yadav
- Department of Neurosurgery, NSCB Medical College, Jabalpur, Madhya Pradesh, India
| | - Jitin Bajaj
- Department of Neurosurgery, NSCB Medical College, Jabalpur, Madhya Pradesh, India
| | - Shailendra Ratre
- Department of Neurosurgery, NSCB Medical College, Jabalpur, Madhya Pradesh, India
| | - Nishtha Yadav
- Department of Neurosurgery, NSCB Medical College, Jabalpur, Madhya Pradesh, India
| | - Vijay Parihar
- Department of Neuroradiology, NSCB Medical College, Jabalpur, Madhya Pradesh, India
| | - Narayan Swamy
- Department of Neurosurgery, NSCB Medical College, Jabalpur, Madhya Pradesh, India
| | - Ambuj Kumar
- Department of Neurosurgery, NSCB Medical College, Jabalpur, Madhya Pradesh, India
| | - Ketan Hedaoo
- Department of Neurosurgery, NSCB Medical College, Jabalpur, Madhya Pradesh, India
| | - Mallika Sinha
- Department of Neurosurgery, NSCB Medical College, Jabalpur, Madhya Pradesh, India
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Zwimpfer TJ, Salterio N, Williams MA, Holubkov R, Katzen H, Luciano MG, Moghekar A, Nagel SJ, Wisoff JH, Golomb J, McKhann GM, Edwards RJ, Hamilton MG. Cognitive and gait outcomes after primary endoscopic third ventriculostomy in adults with chronic obstructive hydrocephalus. J Neurosurg 2021; 136:887-894. [PMID: 34534954 DOI: 10.3171/2021.3.jns203424] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Accepted: 03/10/2021] [Indexed: 11/06/2022]
Abstract
OBJECTIVE The object of this study was to determine the short- and long-term efficacy of primary endoscopic third ventriculostomy (ETV) on cognition and gait in adults with chronic obstructive hydrocephalus. METHODS Patients were prospectively accrued through the Adult Hydrocephalus Clinical Research Network patient registry. Patients with previously untreated congenital or acquired obstructive hydrocephalus were included in this study. Gait velocity was assessed using a 10-m walk test. Global cognition was assessed with the Montreal Cognitive Assessment (MoCA). Only patients with documented pre- and post-ETV gait analysis and/or pre- and post-ETV MoCA were included. RESULTS A total of 74 patients had undergone primary ETV, 42 of whom were analyzed. The remaining 32 patients were excluded, as they could not complete both pre- and post-ETV assessments. The mean age of the 42 patients, 19 (45.2%) of whom were female, was 51.9 ± 17.1 years (range 19-79 years). Most patients were White (37 [88.1%]), and the remainder were Asian. Surgical complications were minor. Congenital etiologies occurred in 31 patients (73.8%), with aqueductal stenosis in 23 of those patients (54.8%). The remaining 11 patients (26.2%) had acquired cases. The gait short-term follow-up cohort (mean 4.7 ± 4.1 months, 35 patients) had a baseline median gait velocity of 0.9 m/sec (IQR 0.7-1.3 m/sec) and a post-ETV median velocity of 1.3 m/sec (IQR 1.1-1.4 m/sec). Gait velocity significantly improved post-ETV with a median within-patient change of 0.3 m/sec (IQR 0.0-0.6 m/sec, p < 0.001). Gait velocity improvements were sustained in the long term (mean 14 ± 2.8 months, 12 patients) with a baseline median velocity of 0.7 m/sec (IQR 0.6-1.3 m/sec), post-ETV median of 1.3 m/sec (IQR 1.1-1.7 m/sec), and median within-patient change of 0.4 m/sec (IQR 0.2-0.6 m/sec, p < 0.001). The cognitive short-term follow-up cohort (mean 4.6 ± 4.0 months, 38 patients) had a baseline median MoCA total score (MoCA TS) of 24/30 (IQR 23-27) that improved to 26/30 (IQR 24-28) post-ETV. The median within-patient change was +1 point (IQR 0-2 points, p < 0.001). However, this change is not clinically significant. The cognitive long-term follow-up cohort (mean 14 ± 3.1 months, 15 patients) had a baseline median MoCA TS of 23/30 (IQR 22-27), which improved to 26/30 (IQR 25-28) post-ETV. The median within-patient change was +2 points (IQR 1-3 points, p = 0.007), which is both statistically and clinically significant. CONCLUSIONS Primary ETV can safely improve symptoms of gait and cognitive dysfunction in adults with chronic obstructive hydrocephalus. Gait velocity and global cognition were significantly improved, and the worsening of either was rare following ETV.
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Affiliation(s)
- Thomas J Zwimpfer
- 1Department of Surgery, University of British Columbia, Vancouver, British Columbia, Canada
| | - Nicholas Salterio
- 1Department of Surgery, University of British Columbia, Vancouver, British Columbia, Canada
| | - Michael A Williams
- 2Departments of Neurology and Neurological Surgery, University of Washington, Seattle, Washington
| | - Richard Holubkov
- 3Department of Pediatrics, University of Utah, Salt Lake City, Utah
| | - Heather Katzen
- 4Department of Neurology, University of Miami Miller School of Medicine, Miami, Florida
| | | | - Abhay Moghekar
- 6Neurology, Johns Hopkins University, Baltimore, Maryland
| | - Sean J Nagel
- 7Department of Neurosurgery, Center for Neurological Restoration, Cleveland Clinic, Cleveland, Ohio
| | | | - James Golomb
- 9Neurology, New York University School of Medicine, New York, New York
| | - Guy M McKhann
- 10Department of Neurological Surgery, Columbia University Irving Medical Center, New York, New York
| | - Richard J Edwards
- 11Department of Neurosurgery, Southmead Hospital, Bristol, United Kingdom; and
| | - Mark G Hamilton
- 12Department of Clinical Neurosciences, Division of Neurosurgery, University of Calgary Cumming School of Medicine, Calgary, Alberta, Canada
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Tuniz F, Fabbro S, Piccolo D, Vescovi MC, Bagatto D, Cramaro A, Skrap M. Long-Standing Overt Ventriculomegaly in Adults (LOVA): Diagnostic Aspects, CSF Dynamics with Lumbar Infusion Test and Treatment Options in a Consecutive Series with Long-Term Follow-Up. World Neurosurg 2021; 156:e30-e40. [PMID: 34425295 DOI: 10.1016/j.wneu.2021.08.068] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 08/12/2021] [Accepted: 08/13/2021] [Indexed: 11/25/2022]
Abstract
BACKGROUND Long-standing overt ventriculomegaly in adults is a chronic form of hydrocephalus without a clear pathophysiological description and a consensus about the treatment. We present the results of endoscopic third ventriculostomy (ETV) in a consecutive series with a mean follow-up of 79 ± 23 months, highlighting how the preoperative lumbar infusion test could facilitate understanding the pathophysiology of the disease. METHODS We retrospectively collected data regarding clinical assessment, neuroradiological findings, and preoperative lumbar infusion tests in 22 symptomatic patients. RESULTS In the majority of cases, patients reported imbalance and gait disorders, and 8 subjects had headaches. The preoperative lumbar infusion test demonstrated a mean opening pressure of 13.95 ± 2.88 mm Hg, with plateau values ranging from 22 to 39 mm Hg. The resistance to outflow was 11.21 ± 2.00 mm Hg/mL/min. After the procedure, all patients reported improvement or halted progression in their presenting symptoms, whereas no significant reduction was demonstrated in Evans' index. One subject underwent a second ETV procedure after more than 2 years because of the failure of the endoscopic approach. CONCLUSIONS A progressive exhaustion of brain compliance plays an important role in explaining the dichotomy between severe ventriculomegaly and mild clinical symptoms in patients with long-standing overt ventriculomegaly in adults. The role of the aqueductal stenosis as a diagnostic criterion might be reconsidered. The preoperative infusion test data support this observation. Preoperative assessment should include not only clinical and neuroradiological evaluation but also the study of cerebrospinal fluid dynamics. ETV should be considered the treatment of choice because of its safety and efficacy. Long-term follow-up is mandatory.
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Affiliation(s)
- Francesco Tuniz
- Department of Neurosurgery, ASUFC Santa Maria della Misericordia, Udine, Italy
| | - Sara Fabbro
- Department of Neurosurgery, ASUFC Santa Maria della Misericordia, Udine, Italy.
| | - Daniele Piccolo
- Department of Neurosurgery, ASUFC Santa Maria della Misericordia, Udine, Italy
| | | | - Daniele Bagatto
- Department of Neuroradiology, ASUFC Santa Maria della Misericordia, Udine, Italy
| | - Antonio Cramaro
- Department of Neurosurgery, ASUFC Santa Maria della Misericordia, Udine, Italy
| | - Miran Skrap
- Department of Neurosurgery, ASUFC Santa Maria della Misericordia, Udine, Italy
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Abstract
BACKGROUND Despite advances in hydrocephalus shunt technology and improvement in hydrocephalus management, many patients have chronic disability and require multiple surgeries throughout their lifetime. There is limited data from patients' perspective regarding the impact of shunt devices on quality-of-life. METHODS A cross-sectional survey was developed to evaluate the impact of shunt devices on patient quality-of-life. The survey was distributed via social media platforms of the Hydrocephalus Association, and patients self-selected to anonymously complete the online questionnaire. A literature review was performed to contextualize the findings from the survey. RESULTS A total of 562 survey responses were obtained from a network encompassing 35,000 members. The mean age was 30 years old (0.5-87), and 65% identified as female. Eighty one percent underwent at least 1 shunt revision surgery, with a reported average of 10 shunt revision surgeries per patient (1-200 surgeries). Occlusion, shunt migration and infection were the leading causes for revision at 60%, 47%, and 35%, respectively. In addition, 72% of patients reported pain and discomfort from the device, and 68% expressed avoidance of certain activities due to "fear of bumping shunt." Despite numerous articles discussing shunt technology, a review of the literature indicated a paucity of studies specifically evaluating the burden of shunt devices from a patient/caregiver perspective. CONCLUSIONS The findings from this study suggest long-term physical and psychosocial burden associated with shunt devices. Importantly, this study highlights the need for concerted efforts to develop validated tools to study patient reported outcomes as it relates to neurocranial implanted devices.
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Characteristics and management of hydrocephalus in adult patients with cerebellar glioblastoma: lessons from a French nationwide series of 118 cases. Neurosurg Rev 2021; 45:683-699. [PMID: 34195892 DOI: 10.1007/s10143-021-01578-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 05/19/2021] [Accepted: 06/02/2021] [Indexed: 10/21/2022]
Abstract
The characteristics of hydrocephalus associated with cerebellar glioblastoma (cGB) remain poorly known. The objectives were to describe the occurence of hydrocephalus in a French nationwide series of adult patients with cGB, to identify the characteristics associated with hydrocephalus and to analyze the outcomes associated with the different surgical strategies, in order to propose practical guidelines. Consecutive cases of adult cGB patients prospectively recorded into the French Brain Tumor Database between 2003 and 2017 were screened. Diagnosis was confirmed by a centralized neuropathological review. Among 118 patients with cGB (mean age 55.9 years), 49 patients (41.5%) presented with pre-operative hydrocephalus. Thirteen patients (11.0%) developed acute (n=7) or delayed (n=6) hydrocephalus postoperatively. Compared to patients without hydrocephalus at admission, patients with hydrocephalus were younger (52.0 years vs 58.6 years, p=0.03) and underwent more frequently tumor resection (93.9% vs 73.9%, p=0.006). A total of 40 cerebrospinal-fluid diversion procedures were performed, including 18 endoscopic third ventriculostomies, 12 ventriculoperitoneal shunts and 10 external ventricular drains. The different cerebrospinal-fluid diversion options had comparable functional results and complication rates. Among the 89 patients surgically managed for cGB without prior cerebrospinal-fluid diversion, 7 (7.9%) were long-term shunt-dependant. Hydrocephalus is frequent in patients with cGB and has to be carefully managed in order not to interfere with adjuvant oncological treatments. In case of symptomatic hydrocephalus, a cerebrospinal-fluid diversion is mandatory, especially if surgical resection is not feasible. In case of asymptomatic hydrocephalus, a cerebrospinal-fluid diversion has to be discussed only if surgical resection is not feasible.
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The Third Eye Sees Double: Cohort Study of Clinical Presentation, Histology, Surgical Approaches, and Ophthalmic Outcomes in Pineal Region Germ Cell Tumors. World Neurosurg 2021; 150:e482-e490. [PMID: 33722723 DOI: 10.1016/j.wneu.2021.03.030] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 03/07/2021] [Accepted: 03/07/2021] [Indexed: 11/21/2022]
Abstract
BACKGROUND Intracranial germ cell tumors (GCTs) predominantly occur in the adolescent and young adult population and are most frequently located at the pineal gland. Tumor masses in the pineal region may cause ophthalmic symptoms due to compression to the midbrain, frequently presenting with Parinaud syndrome and hydrocephalus due to aqueductal compression. METHODS We conducted a single-institution cohort study of primary, pineal region GCTs to characterize the clinical presentation, as well as associated ophthalmic and hydrocephalus outcomes. RESULTS Fifty-six primary pineal GCTs were identified. Among the 40 isolated pineal region GCTs, 15 were germinomas while 25 were nongerminomatous GCTs. Among 43 cases of hydrocephalus, endoscopic third ventriculostomy was the primary treatment in 27 cases, which was successful in 23 but failed and required additional treatment for the rest. Pineal tumor mass was significantly larger in cases with hydrocephalus compared with those without, and the 20-mm diameter of the tumor was the crucial point for obstructive hydrocephalus. Ophthalmic symptoms were commonly observed at presentation, which included diplopia (74.3%), upward-gaze palsy (69.7%), and Argyll Robertson pupil (40%). These symptoms tended to remain, and the existence of these symptoms at presentation predicted the remaining symptoms in the follow-up. CONCLUSIONS Intracranial GCTs presenting with ophthalmic abnormalities appear to be at increased risk of residual posttreatment symptoms, while second-look surgery presents a significant risk factor for the development of new deficits. Hydrocephalus often accompanies pineal region GCTs, and in most cases both cerebrospinal fluid diversion and tissue diagnosis can be successfully achieved via endoscopic third ventriculostomy.
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Hamilton M, Isaacs A. Natural History, Treatment Outcomes and Quality of Life in Idiopathic Normal Pressure Hydrocephalus (iNPH). Neurol India 2021; 69:S561-S568. [DOI: 10.4103/0028-3886.332281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Gutierrez-Aceves GA, Rodriguez-Camacho A, Celis-Lopez MA, Moreno-Jimenez S, Herrera-Gonzalez JA. Frameless radiosurgical third ventriculostomy: Technical report. Surg Neurol Int 2020; 11:398. [PMID: 33282458 PMCID: PMC7710479 DOI: 10.25259/sni_247_2020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Accepted: 10/23/2020] [Indexed: 11/28/2022] Open
Abstract
Background: We describe the technical report and results of the first image-guided, linear accelerator, frameless radiosurgical third ventriculostomy. Methods: We report a 20 years old man, with diplopia, balance disturbances, and limitation for gaze supraversion. Magnetic resonance imaging resonance imaging of the brain and cranial computed tomography showed showed a left thalamic-midbrain lesion that caused partial compression of the Silvio aqueduct and mild ventricular dilatation. The biopsy revealed the diagnosis of pleomorphic xanthoastrocytoma. Before radical treatment of the tumor with fractionated stereotactic radiotherapy, the patient underwent to frameless radiosurgical third ventriculostomy, on the TrueBeam STX® platform with the ExacTrac localization system. The target used was the one defined on the floor of the third ventricle, at the midpoint between the mammillary bodies and the infundibular recess. The prescription dose was 120 Gy, given using a monoisocentric technique of multiple noncoplanar circular arches. The geometric arrangement of the plan consisted of 15 arches, with a 4 mm cone, distributed over a 110° table. Results: There was symptomatic and image improvement two days after radiosurgery. On CT, a reduction in ventricular dilation was observed with a reduction in the Evans index from 0.39 (initial CT) to 0.29 (CT at 15 days). In 3.0T magnetic resonance image at 3 months, we showed the third ventriculostomy. There have been no treatment failures or complications. Conclusion: It is possible to effectively perform the frameless radiosurgical third ventriculostomy without associated morbidity in the short term.
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Affiliation(s)
| | - Alejandro Rodriguez-Camacho
- Radio Neurosurgery Unit, National Institute of Neurology and Neurosurgery "Dr. Manuel Velasco Suarez", Mexico City, Mexico
| | - Miguel Angel Celis-Lopez
- Radio Neurosurgery Unit, National Institute of Neurology and Neurosurgery "Dr. Manuel Velasco Suarez", Mexico City, Mexico
| | - Sergio Moreno-Jimenez
- Radio Neurosurgery Unit, National Institute of Neurology and Neurosurgery "Dr. Manuel Velasco Suarez", Mexico City, Mexico
| | - Jose Alfredo Herrera-Gonzalez
- Radio Neurosurgery Unit, National Institute of Neurology and Neurosurgery "Dr. Manuel Velasco Suarez", Mexico City, Mexico
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Darbar A, Mustansir F, Hani U, Sajid MI. A Review of Common Endoscopic Intracranial Approaches. Asian J Neurosurg 2020; 15:471-478. [PMID: 33145194 PMCID: PMC7591209 DOI: 10.4103/ajns.ajns_367_19] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 02/14/2020] [Accepted: 05/04/2020] [Indexed: 11/30/2022] Open
Abstract
With the evolution of surgical techniques, endoscopy has emerged as a suitable alternative to many instances of more invasive methods. In this review article, we aim to discuss the endoscopic advancements, procedural details, indications, and outcomes of the most commonly practiced neuroendoscopic procedures. We have also summarized the uses, techniques, and challenges of neuroendoscopy in select neurosurgical pathologies.
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Affiliation(s)
- Aneela Darbar
- Department of Neurosurgery, The Aga Khan University, Karachi, Pakistan
| | - Fatima Mustansir
- Department of Neurosurgery, The Aga Khan University, Karachi, Pakistan
| | - Ummey Hani
- Department of Neurosurgery, The Aga Khan University, Karachi, Pakistan
| | - Mir Ibrahim Sajid
- Department of Neurosurgery, The Aga Khan University, Karachi, Pakistan
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Gürbüz MS, Dağçınar A, Bayri Y, Şeker A, Güçlü H. Anterior third ventricular height and infundibulochiasmatic angle: two novel measurements to predict clinical success of endoscopic third ventriculostomy in the early postoperative period. J Neurosurg 2020; 132:1764-1772. [PMID: 31075772 DOI: 10.3171/2019.1.jns181330] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Accepted: 01/29/2019] [Indexed: 12/24/2022]
Abstract
OBJECTIVE The authors sought to develop a set of parameters that reliably predict the clinical success of endoscopic third ventriculostomy (ETV) when assessed before and after the operation, and to establish a plan for MRI follow-up after this procedure. METHODS This retrospective study involved 77 patients who had undergone 78 ETV procedures for obstructive hydrocephalus between 2010 and 2015. Constructive interference in steady-state (CISS) MRI evaluations before and after ETV were reviewed, and 4 parameters were measured. Two well-known standard parameters, fronto-occipital horn ratio (FOHR) and third ventricular index (TVI), and 2 newly defined parameters, infundibulochiasmatic (IC) angle and anterior third ventricular height (TVH), were measured in this study. Associations between preoperative measurements of and postoperative changes in the 4 variables and the clinical success of ETV were analyzed. RESULTS Of the 78 ETV procedures, 70 (89.7%) were successful and 8 (10.3%) failed. On the preoperative MR images, the mean IC angle and anterior TVH were significantly larger in the successful procedures. On the 24-hour postoperative MR images of the successful procedures, the mean IC angle declined significantly from 114.2° to 94.6° (p < 0.05) and the mean anterior TVH declined significantly from 15 to 11.2 mm (p < 0.05). The mean percentage reduction of the IC angle was 17.1%, and that of the anterior TVH was 25.5% (both p < 0.05). On the 1-month MR images of the successful procedures, the mean IC angle declined significantly from 94.6° to 84.2° (p < 0.05) and the mean anterior TVH declined significantly from 11.2 to 9.3 mm (p < 0.05). The mean percentage reductions in IC angle (11%) and anterior TVH (16.9%) remained significant at this time point but were smaller than those observed at 24 hours. The 6-month and 1-year postoperative MR images of the successful group showed no significant changes in mean IC angle or mean anterior TVH. Regarding the unsuccessful procedures, there were no significant changes observed in IC angle or anterior TVH at any of the time points studied. Reduction of IC angle and reduction of anterior TVH on 24-hour postoperative MR images were significantly associated with successful ETV. However, no clinically significant association was found between FOHR, TVI, and ETV success. CONCLUSIONS Assessing the IC angle and anterior TVH on preoperative and 24-hour postoperative MR images is useful for predicting the clinical success of ETV. These 2 measurements could also be valuable as radiological follow-up parameters.
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Affiliation(s)
- Mehmet Sabri Gürbüz
- 1Department of Neurosurgery, School of Medicine, İstanbul Medeniyet University
| | - Adnan Dağçınar
- 2Department of Neurosurgery, School of Medicine, Marmara University; and
| | - Yaşar Bayri
- 2Department of Neurosurgery, School of Medicine, Marmara University; and
| | - Aşkın Şeker
- 2Department of Neurosurgery, School of Medicine, Marmara University; and
| | - Hasan Güçlü
- 3Department of Biostatistics and Medical Informatics, School of Medicine, İstanbul Medeniyet University, İstanbul, Turkey
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Neurocognitive Complications after Ventricular Neuroendoscopy: A Systematic Review. Behav Neurol 2020; 2020:2536319. [PMID: 32300376 PMCID: PMC7132360 DOI: 10.1155/2020/2536319] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Revised: 10/15/2019] [Accepted: 11/04/2019] [Indexed: 12/11/2022] Open
Abstract
In recent years, neuroendoscopic treatment of hydrocephalus and various ventricular pathologies has become increasingly popular. It is considered by many as the first-choice treatment for the majority of these cases. However, neurocognitive complications following ventricular neuroendoscopic procedures may occur leading mostly to amnesia, which might have a grave effect on the patient's quality of life. Studies assessing neurocognitive complications after ventricular neuroendoscopic procedures are sparse. Therefore, we conducted a systematic review assessing the available literature of neurocognitive complications and outcome after ventricular neuroendoscopy. Of 1216 articles screened, 46 were included in this systematic review. Transient and permanent neurocognitive complications in 2804 ventricular neuroendoscopic procedures occurred in 2.0% (n = 55) and 1.04% (n = 28) of the patients, respectively. Most complications described are memory impairment, followed by psychiatric symptoms (psychosyndrome), cognitive impairment not further specified, declined executive function, and confusion. However, only in 20% of the series describing neurocognitive complications or outcome (n = 40) was neurocognition assessed by a trained neuropsychologist in a systematic manner. While in most of these series only a part of the included patients underwent neuropsychological testing, neurocognitive assessment was seldom done pre- and postoperatively, long-term follow up was rare, and patient's cohorts were small. A paucity of studies analyzing neurocognitive complications and outcome, through systematic neuropsychological testing, and the correlation with intraoperative lesions of neuronal structures (e.g., fornix) exists in the literature. Therefore, the neurocognitive and emotional morbidity after ventricular neuroendoscopic procedures might be underestimated and warrants further research.
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Craven CL, Ramkumar R, D'Antona L, Thompson SD, Thorne L, Watkins LD, Toma AK. Natural history of ventriculomegaly in adults: a cluster analysis. J Neurosurg 2020; 132:741-748. [PMID: 30771787 DOI: 10.3171/2018.8.jns18119] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Accepted: 08/24/2018] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Chronic ventriculomegaly in the absence of raised intracranial pressure (ICP) is a known entity in adult hydrocephalus practice. The natural history and indication for treatment is, however, poorly defined. A highly heterogeneous group, some adults with ventriculomegaly are asymptomatic, while others have life-threatening deteriorations. The authors hypothesized that the various presentations can be subtyped and represent different stages of decompensation. A cluster analysis was performed on a cohort of patients with chronic ventriculomegaly with the aim of elucidating typical clinical characteristics and outcomes in chronic ventriculomegaly in adults. METHODS Data were collected from 79 patients with chronic ventriculomegaly referred to a single center, including demographics, presenting symptoms, and 24-hour ICP monitoring (ICPM). A statistical cluster analysis was performed to determine the presence of subgroups. RESULTS Four main subgroups and one highly dissimilar group were identified. Patients with ventriculomegaly commonly have a perinatal event followed by one of four main presentations: 1) incidental ventriculomegaly with or without headache; 2) highly symptomatic presentation (including reduced consciousness) and raised ICP; 3) early presenting with symptoms of headache and nausea (with abnormal pulsatility); and 4) late presenting with features common to normal pressure hydrocephalus. Each symptomatic group has characteristic radiological features, ICPM, and responses to treatment. CONCLUSIONS Cluster analysis has identified subgroups of adult patients with ventriculomegaly. Such groups may represent various degrees of decompensation. Surgical interventions may not be equally effective across the subgroups, presenting an avenue for further research. The identified subtypes provide further insight into the natural history of this lesser studied form of hydrocephalus.
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Sun T, Guan J. Letter: A Comparison of Ventriculoperitoneal and Ventriculoatrial Shunts in a Population of 544 Consecutive Pediatric Patients. Neurosurgery 2020; 86:E583. [DOI: 10.1093/neuros/nyaa030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Affiliation(s)
- Tong Sun
- Department of Neurosurgery West China Hospital Sichuan University Chengdu, Sichuan, P. R. China
| | - Junwen Guan
- Department of Neurosurgery West China Hospital Sichuan University Chengdu, Sichuan, P. R. China
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Bruscella S, Solari D, Somma T, Barbato M, Gangemi M, Cavallo LM. Predicting endoscopic third ventriculostomy success in adult hydrocephalus: preliminary assessment of a modified ETV success score for adults (ETVSS-A) in a series of 47 patients. J Neurosurg Sci 2019; 66:33-39. [PMID: 31565904 DOI: 10.23736/s0390-5616.19.04712-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND Endoscopic third ventriculostomy is an established treatment for noncommunicating hydrocephalus. In carefully selected patients, it can be adopted for the management of communicating variant; however controversy exists in regards to the definition of the appropriate candidates. Predictive score of Endoscopic Third Ventriculostomy Success (ETVSS) has been reported for pediatric and mixed populations only. Our purpose was to define a ETV success score for adult population (ETVSS-A), measuring the strength of correlation between preoperative score retrospectively evaluated and the success rates achieved in a class of adult patients. METHODS A retrospective analysis of 47 cases which received ETV procedure at our Institution between 2015 and 2018 was run. Demographic data,clinical history,preoperative and postoperative signs were reviewed and ETVSS-A was calculated. Thereafter ETVSS-A results were compared with the actual success rates. RESULTS 29 patients(61,7%) presented unchanged or improvedclinical status with a mean ETVSS-A of 54.5%;18 patients(38,3%) worsened with mean ETVSS-A of 37,7%. We found that age,type of hydrocephalus and symptoms of admission are each apart important factors in predicting ETV success:older patients and those with non-obstructive hydrocephalus had the lowest predicted ETV success. In patients in whom ETV was actually successful, the pre-operative ETVSS-A was significantly higher as compared to those patients in whom we observed a poor surgical outcome. CONCLUSIONS From the results of this series, though small and retrospectively analyzed, it seems that ETVSS-A can be considered as a useful instrument to help neurosurgeon in predicting the ETV success and though define a more accurate surgical strategy in cases of hydrocephalus. Wider series and prospective studies are attended to validate these preliminary results.
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Affiliation(s)
- Sara Bruscella
- Division of Neurosurgery, Università degli Studi di Napoli "Federico II", Naples, Italy
| | - Domenico Solari
- Division of Neurosurgery, Università degli Studi di Napoli "Federico II", Naples, Italy -
| | - Teresa Somma
- Division of Neurosurgery, Università degli Studi di Napoli "Federico II", Naples, Italy
| | - Marcello Barbato
- Division of Neurosurgery, Università degli Studi di Napoli "Federico II", Naples, Italy
| | - Michelangelo Gangemi
- Division of Neurosurgery, Università degli Studi di Napoli "Federico II", Naples, Italy
| | - Luigi M Cavallo
- Division of Neurosurgery, Università degli Studi di Napoli "Federico II", Naples, Italy
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The surgical results of endoscopic third ventriculostomy in long-standing overt ventriculomegaly in adults with papilledema. Clin Neurol Neurosurg 2019; 183:105366. [DOI: 10.1016/j.clineuro.2019.05.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 05/09/2019] [Accepted: 05/13/2019] [Indexed: 11/24/2022]
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Baroncini M, Kuchcinski G, Le Thuc V, Bourgeois P, Leroy HA, Baille G, Lebouvier T, Defebvre L. Is endoscopic third ventriculostomy safe and efficient in the treatment of obstructive chronic hydrocephalus in adults? A prospective clinical and MRI study. Acta Neurochir (Wien) 2019; 161:1353-1360. [PMID: 31069530 DOI: 10.1007/s00701-019-03932-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Accepted: 04/24/2019] [Indexed: 11/27/2022]
Abstract
BACKGROUND In case of suspected normal pressure hydrocephalus, MRI is performed systematically and can sometimes highlight an obstruction of the flow pathways of the CSF (aqueductal stenosis or other downstream obstruction). It seems legitimate for these patients to ask the question of a treatment with endoscopic third ventriculostomy (ETV), even if the late decompensation of an obstruction may suggest an association with a CSF resorption disorder. The aim of this study was to evaluate clinical and radiological evolution after ETV in a group of elderly patients with an obstructive chronic hydrocephalus (OCH). METHODS ETV was performed in 15 patients with OCH between 2012 and 2017. Morphometric (callosal angle, ventricular surface, third ventricular width, and Evans' index) and velocimetric parameters (stroke volume of the aqueductal (SVa) CSF) parameters were measured prior and after surgery with brain MRI. The clinical score (mini-mental status examination (MMSE) and the modified Larsson's score, evaluating walking, autonomy, and incontinence) were performed pre- and postoperatively. RESULTS SVa was less than 15 μL/R-R in 12 out of the 15 patients; in the other three cases, the obstruction was located at a distance from the middle part of the aqueduct. Fourteen out of 15 patients were significantly improved: mean Larsson's score decreased from 3.8 to 0.6 (P ≤ 0.01) and mean MMSE increased from 25.7 to 28 (P = 0.084). Evans' index and ventricular area decreased postoperatively and the callosal angle increased (P ≤ 0.01). The mean follow-up lasted 17.9 months. No postoperative complications were observed. CONCLUSION ETV seems to be a safe and efficient alternative to shunt for chronic hydrocephalus with obstruction; the clinical improvement is usual and ventricular size decreases slightly.
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Affiliation(s)
- Marc Baroncini
- Department of Neurosurgery, Lille University Hospital (CHU Lille), University of Lille, Rue Emile Laine, Lille, France.
| | - Gregory Kuchcinski
- Department of Neuroradiology, Lille University Hospital (CHU Lille), University of Lille, Lille, France
| | - Vianney Le Thuc
- Department of Neuroradiology, Lille University Hospital (CHU Lille), University of Lille, Lille, France
| | - Philippe Bourgeois
- Department of Neurosurgery, Lille University Hospital (CHU Lille), University of Lille, Rue Emile Laine, Lille, France
| | - Henri Arthur Leroy
- Department of Neurosurgery, Lille University Hospital (CHU Lille), University of Lille, Rue Emile Laine, Lille, France
| | - Guillaume Baille
- Department of Neurology, Lille University Hospital (CHU Lille), University of Lille, Lille, France
| | - Thibaud Lebouvier
- Department of Neurology, Lille University Hospital (CHU Lille), University of Lille, Lille, France
| | - Luc Defebvre
- Department of Neurology, Lille University Hospital (CHU Lille), University of Lille, Lille, France
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Heshmati B, Habibi Z, Golpayegani M, Salari F, Anbarlouei M, Nejat F. Endoscopic Third Ventriculostomy in Children with Failed Ventriculoperitoneal Shunt. Asian J Neurosurg 2019; 14:399-402. [PMID: 31143252 PMCID: PMC6515990 DOI: 10.4103/ajns.ajns_93_18] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Context Endoscopic third ventriculostomy (ETV) is an accepted procedure for the treatment of obstructive hydrocephalus. The role of endoscopic treatment in the management of shunt malfunction was not extensively evaluated. The aim of this study is to evaluate the success rate of ETV in pediatric patients formerly treated by ventriculoperitoneal (V-P) shunt implantation. Materials and Methods Thirty-three patients with their first shunt failure and obstructive hydrocephalus in brain imaging between 2008 and 2014 were enrolled in this study. Results The most common causes of hydrocephalus in these patients were aqueductal stenosis and myelomeningocele with or without associated shunt infection. Of these 33 cases, 20 ETV procedures were successful, and 13 cases needed shunt revision after ETV failure. There was no serious complication during ETV procedures. The follow-up period of patients with successful ETV was 6-50 months (mean 18 months). The time interval between ETV and new shunting subsequent to ETV failure was 24.4 days (10-95). Conclusions ETV can be considered as an alternative treatment paradigm in patients with previous shunt or new shunt failure with an acceptable success rate of 6o%, although long-term follow-up is needed for these patients.
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Affiliation(s)
- Bijan Heshmati
- Department of Neurosurgery, Imam Reza Hospital, Urmia, Iran
| | - Zohreh Habibi
- Department of Neurosurgery, Children's Medical Center Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Mehdi Golpayegani
- Department of Neurosurgery, Shahid Beheshti University of Medical Science, Tehran, Iran
| | - Farhad Salari
- Department of Neurosurgery, Shahid Beheshti University of Medical Science, Tehran, Iran
| | - Mousarreza Anbarlouei
- Department of Neurosurgery, Children's Medical Center Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Farideh Nejat
- Department of Neurosurgery, Children's Medical Center Hospital, Tehran University of Medical Sciences, Tehran, Iran
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Age-specific global epidemiology of hydrocephalus: Systematic review, metanalysis and global birth surveillance. PLoS One 2018; 13:e0204926. [PMID: 30273390 PMCID: PMC6166961 DOI: 10.1371/journal.pone.0204926] [Citation(s) in RCA: 127] [Impact Index Per Article: 21.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Accepted: 09/17/2018] [Indexed: 02/08/2023] Open
Abstract
Background Hydrocephalus is a debilitating disorder, affecting all age groups. Evaluation of its global epidemiology is required for healthcare planning and resource allocation. Objectives To define age-specific global prevalence and incidence of hydrocephalus. Methods Population-based studies reporting prevalence of hydrocephalus were identified (MEDLINE, EMBASE, Cochrane, and Google Scholar (1985–2017)). Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines were followed. Two authors reviewed abstracts, full text articles and abstracted data. Metanalysis and meta-regressions were used to assess associations between key variables. Heterogeneity and publication bias were assessed. Main outcome of interest was hydrocephalus prevalence among pediatric (≤ 18 years), adults (19–64 years), and elderly (≥ 65) patients. Annual hydrocephalus incidence stratified by country income level and folate fortification requirements were obtained (2003–2014) from the International Clearinghouse for Birth Defects Surveillance and Research (ICBDSR). Results Of 2,460 abstracts, 52 met review eligibility criteria (aggregate population 171,558,651). Mean hydrocephalus prevalence was 85/100,000 [95% CI 62, 116]. The prevalence was 88/100,000 [95% CI 72, 107] in pediatrics; 11/100,000 [95% CI 5, 25] in adults; and 175/100,000 [95% CI 67, 458] in the elderly. The ICBDSR-based incidence of hydrocephalus diagnosed at birth remained stable over 11 years: 81/100,000 [95% CI 69, 96]. A significantly lower incidence was identified in high-income countries. Conclusion This systematic review established age-specific global hydrocephalus prevalence. While high-income countries had a lower hydrocephalus incidence according to the ICBDSR registry, folate fortification status was not associated with incidence. Our findings may inform future healthcare resource allocation and study.
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Sun T, Yuan Y, Zhang Q, Zhou Y, Li X, Yu H, Tian M, Guan J. Establishing a Preoperative Evaluation System for Lumboperitoneal Shunt: Approach to Attenuate the Risk of Shunt Failure. World Neurosurg 2018; 117:e308-e315. [PMID: 29906581 DOI: 10.1016/j.wneu.2018.06.021] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2018] [Revised: 06/03/2018] [Accepted: 06/04/2018] [Indexed: 02/05/2023]
Abstract
OBJECTIVE Lumboperitoneal shunt (LPS) has been demonstrated an effective method for the treatment of communicating hydrocephalus in the presence of frequent shunt failure. The objective of the present study was to determine whether establishing a preoperative evaluation system could benefit patients, thus attenuating the risk of LPS failure. METHODS In this 3-year study, treated by LPS, patients undergoing preoperative evaluation were included into the study group and other individuals without preoperative evaluation were included into the control group. Perioperative conditions, including Keifer's hydrocephalus score, symptomatic control rate, Evans index, complications, long-term shunt revision rate, and quality of life, were synchronously investigated. RESULTS A total of 93 eligible patients were included in the study (study group, 51; control group, 42). The baseline characteristics of the 2 groups were basically similar. The results showed that patients in the study group had better short-term improvement in symptoms and imageology, including higher symptomatic control rate (median, 62.5% vs. 50%; P = 0.001), more reduction in Evans index (0.08 ± 0.05 vs. 0.05 ± 0.04; P = 0.002), and lower incidence of postoperative complications (median, 35.3% vs. 57.1%; P = 0.04). Similarly, the incidence of shunt revision in the study group was dramatically lower than in the control group (median, 15.7% vs. 40.9%; P = 0.006) in line with the revision-free curve (P = 0.002), which suggested that most of patients received revision, if needed, within 3 months. In addition, patients in the study group had better quality of life. CONCLUSIONS In conclusion, patients who underwent evaluation before LPS had better short-term and long-term outcomes, suggesting that it would be a promising strategy to correctly select patients for LPS with prolonged favorable shunt outcomes.
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Affiliation(s)
- Tong Sun
- West China School of Medicine, Sichuan University, Chengdu, Sichuan, People's Republic of China
| | - Yikai Yuan
- West China School of Medicine, Sichuan University, Chengdu, Sichuan, People's Republic of China
| | - Qiuming Zhang
- West China School of Medicine, Sichuan University, Chengdu, Sichuan, People's Republic of China
| | - Yicheng Zhou
- West China School of Medicine, Sichuan University, Chengdu, Sichuan, People's Republic of China
| | - Xuepei Li
- Health Ministry Key Laboratory of Chronobiology, College of Basic Medicine and Forensic Medicine, Sichuan University, Chengdu, Sichuan, People's Republic of China
| | - Hang Yu
- Health Ministry Key Laboratory of Chronobiology, College of Basic Medicine and Forensic Medicine, Sichuan University, Chengdu, Sichuan, People's Republic of China
| | - Meng Tian
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China
| | - Junwen Guan
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China.
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Marx S, Reinfelder M, Matthes M, Schroeder HWS, Baldauf J. Frequency and treatment of hydrocephalus prior to and after posterior fossa tumor surgery in adult patients. Acta Neurochir (Wien) 2018; 160:1063-1071. [PMID: 29455408 DOI: 10.1007/s00701-018-3496-x] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Accepted: 02/10/2018] [Indexed: 12/14/2022]
Abstract
BACKGROUND There is paucity of information about the frequency of hydrocephalus prior to and after posterior fossa tumor surgery in adult patients and about the best way it should be managed. The present study was conducted to determine the frequency of hydrocephalus prior to and after posterior fossa tumor surgery in adult patients as well as the value of an endoscopic third ventriculostomy (ETV) prior to posterior fossa tumor surgery with regard to the rate of perioperative complications and persistent hydrocephalus. METHODS A single-institution retrospective chart review of all posterior fossa tumor surgeries of our department in a 10-year period (2005 to 2014) has been done. RESULTS Fifty-two of 243 adult patients with posterior fossa tumors presented with hydrocephalus at the time of admission prior to tumor surgery. 39/52 received early tumor surgery, 11/52 an ETV prior to tumor surgery and in 2/52 an external ventricular drainage (EVD) was inserted prior to tumor surgery. 3/52 patients required a permanent cerebrospinal fluid (CSF) diverting procedure for persistent hydrocephalus after tumor removal. One hundred ninety-one patients did not demonstrate a hydrocephalus before surgical treatment and four of them developed a post-resection hydrocephalus. CONCLUSION The frequency of hydrocephalus prior to posterior fossa tumor surgery in adult patients is 21.4% and therefore much lower than in respective reports of pediatric patients. The risk of persistent hydrocephalus and newly developed hydrocephalus after tumor surgery was very low, too (5.7 and 2.1%, respectively). An ETV is not justified in every adult patient prior to posterior fossa tumor surgery.
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Affiliation(s)
- Sascha Marx
- Department of Neurosurgery, University Medicine Greifswald, Sauerbruchstraße, 17475, Greifswald, Germany.
| | - Maresa Reinfelder
- Department of Neurosurgery, University Medicine Greifswald, Sauerbruchstraße, 17475, Greifswald, Germany
| | - Marc Matthes
- Department of Neurosurgery, University Medicine Greifswald, Sauerbruchstraße, 17475, Greifswald, Germany
| | - Henry W S Schroeder
- Department of Neurosurgery, University Medicine Greifswald, Sauerbruchstraße, 17475, Greifswald, Germany
| | - Joerg Baldauf
- Department of Neurosurgery, University Medicine Greifswald, Sauerbruchstraße, 17475, Greifswald, Germany
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Jung TY, Chong S, Kim IY, Lee JY, Phi JH, Kim SK, Kim JH, Wang KC. Prevention of Complications in Endoscopic Third Ventriculostomy. J Korean Neurosurg Soc 2017; 60:282-288. [PMID: 28490153 PMCID: PMC5426448 DOI: 10.3340/jkns.2017.0101.014] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Revised: 02/19/2017] [Accepted: 02/21/2017] [Indexed: 11/27/2022] Open
Abstract
A variety of complications in endoscopic third ventriculostomy have been reported, including neurovascular injury, hemodynamic alterations, endocrinologic abnormalities, electrolyte imbalances, cerebrospinal fluid leakage, fever and infection. Even though most complications are transient, the overall rate of permanent morbidity is 2.38% and the overall mortality rate is 0.28%. To avoid these serious complications, we should keep in mind potential complications and how to prevent them. Proper decisions with regard to surgical indication, choice of endoscopic entry and trajectory, careful endoscopic procedures with anatomic orientation, bleeding control and tight closure are emphasized for the prevention of complications.
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Affiliation(s)
- Tae-Young Jung
- Department of Neurosurgery, Chonnam National University Medical School and Hwasun Hospital, Hwasun, Korea
| | - Sangjoon Chong
- Division of Pediatric Neurosurgery and Clinical Pediatric Neuroscience Center, Seoul National University Children's Hospital, Seoul, Korea
| | - In-Young Kim
- Department of Neurosurgery, Chonnam National University Medical School and Hwasun Hospital, Hwasun, Korea
| | - Ji Yeoun Lee
- Division of Pediatric Neurosurgery and Clinical Pediatric Neuroscience Center, Seoul National University Children's Hospital, Seoul, Korea.,Department of Anatomy, Seoul National University College of Medicine, Seoul, Korea
| | - Ji Hoon Phi
- Division of Pediatric Neurosurgery and Clinical Pediatric Neuroscience Center, Seoul National University Children's Hospital, Seoul, Korea
| | - Seung-Ki Kim
- Division of Pediatric Neurosurgery and Clinical Pediatric Neuroscience Center, Seoul National University Children's Hospital, Seoul, Korea
| | - Jae-Hyoo Kim
- Department of Neurosurgery, Chonnam National University Medical School and Hospital, Gwangju, Korea
| | - Kyu-Chang Wang
- Division of Pediatric Neurosurgery and Clinical Pediatric Neuroscience Center, Seoul National University Children's Hospital, Seoul, Korea
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Filis AK, Aghayev K, Vrionis FD. Cerebrospinal Fluid and Hydrocephalus: Physiology, Diagnosis, and Treatment. Cancer Control 2017; 24:6-8. [PMID: 28178707 DOI: 10.1177/107327481702400102] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
BACKGROUND Cerebrospinal fluid (CSF) is found around and inside the brain and vertebral column. CSF plays a crucial role in the protection and homeostasis of neural tissue. METHODS Key points on the physiology of CSF as well as the diagnostic and treatment options for hydrocephalus are discussed. RESULTS Understanding the fundamentals of the production, absorption, dynamics, and pathophysiology of CSF is crucial for addressing hydrocephalus. Shunts and endoscopic third ventriculostomy have changed the therapeutic landscape of hydrocephalus. CONCLUSIONS The treatment of hydrocephalus in adults and children represents a large part of everyday practice for the neurologist, both in benign cases and cancer-related diagnoses.
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Affiliation(s)
| | - Kamran Aghayev
- Department of Neuro-Oncology, Moffitt Cancer Center and the University of South Florida Morsani College of Medicine, Tampa, FL
| | - Frank D Vrionis
- Marcus Neuroscience Institute, Boca Raton Regional Hospital and the Charles E. Schmidt College of Medicine, Florida Atlantic University, Boca Raton, FL.
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Ved R, Leach P, Patel C. Surgical treatment of long-standing overt ventriculomegaly in adults (LOVA). Acta Neurochir (Wien) 2017; 159:71-79. [PMID: 27807671 PMCID: PMC5177667 DOI: 10.1007/s00701-016-2998-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Accepted: 10/13/2016] [Indexed: 11/27/2022]
Abstract
BACKGROUND Longstanding overt ventriculomegaly in adults (LOVA) is characterised by chronic hydrocephalus presumed to begin during infancy, but arresting before becoming clinically detectable. Later in life clinical features of hydrocephalus ensue, typically in the 5th or 6th decades. Only a relatively small number of LOVA case series have been published, and ambiguity remains regarding optimal management. This case series describes a series of patients with LOVA treated successfully at a single neurosurgical institution using endoscopic third ventriculostomy (ETV). METHODS A series of 14 patients were diagnosed with LOVA using established clinical and radiological criteria. All patients underwent an ETV and their clinical conditions were followed up for up to 5 years post-operatively. RESULTS Fourteen patients (100 %) reported either improvement or halt of progression in their presenting symptoms 3 months after ETV; 93 % of patients (n = 13) did not require any further surgical intervention. One patient (7 %) reported deterioration in symptoms beyond 3 months post-operatively, which necessitated further surgery (ventriculoperitoneal shunt). These promising outcomes after ETV are mirrored in numerous other LOVA case series. Other works have analysed the value of CSF shunting procedures in LOVA, with mixed results. A direct, prospective comparison of outcomes after shunt procedures and ETV, with a specific focus on LOVA patients, is yet to be completed. A minority of patients fail to respond, or develop recurrence of symptoms, months or years after initial surgical intervention. CONCLUSIONS ETV is an attractive option for surgical treatment of LOVA. After surgical treatment for LOVA, long-term follow-up should be considered to screen for late recurrence of the condition.
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Affiliation(s)
- Ronak Ved
- University Hospital of Wales, Cardiff, CF14 4XW, UK.
| | - Paul Leach
- University Hospital of Wales, Cardiff, CF14 4XW, UK
| | - Chirag Patel
- University Hospital of Wales, Cardiff, CF14 4XW, UK
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