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Schartz D, Finkelstein A, Akkipeddi SMK, Williams Z, Vates E, Bender MT. Outcomes of Pulsatile Tinnitus After Cerebral Venous Sinus Stenting: Systematic Review and Pooled Analysis of 616 Patients. World Neurosurg 2024:S1878-8750(24)01407-4. [PMID: 39142383 DOI: 10.1016/j.wneu.2024.08.048] [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: 08/05/2024] [Accepted: 08/07/2024] [Indexed: 08/16/2024]
Abstract
BACKGROUND Pulsatile tinnitus (PT) is a debilitating condition with substantial morbidity related to quality of life. Cerebral venous sinus stenosis has recently emerged as a noninfrequent cause of PT, either in the setting of concurrent idiopathic intracranial hypertension (IIH) or due to primary venous stenosis. Venous sinus stenting (VSS) is an endovascular technique that can be used to treat venous stenosis. However, it is unclear if outcomes are different between patients with primary venogenic PT and IIH associated PT. METHODS A systematic literature review and pooled analysis was completed to evaluate the clinical outcomes of PT in patients undergoing cerebral VSS. Outcome measures included: Improved PT, complete resolution of PT, and PT recurrence at follow-up. Subgroup analysis between patients with IIH and primary PT was completed. RESULTS In total, 28 studies were identified with 616 patients. The proportion of improved PT symptoms after VSS had an overall pooled rate of 91.7% (confidence interval [CI]:88.1%-95.2%; I2 = 65%) and no difference between subgroups (P = 0.12). Complete resolution after VSS had an overall pooled rate of 88.6% (CI: 84.0%-93.3%; I2 = 68%) and no significant difference between subgroups (P = 0.35). Recurrent PT after stenting occurred in 6.5% of cases (CI: 1.7%-11.3%; I2 = 62%). Furthermore, subgroup analysis demonstrated that IIH patients had a significantly higher recurrence rate (10.6%; CI: 5.2%-16.1%; I2 = 26%) compared to patients treated with venous stenting for PT as the primary indication (2.0%; CI: 0.8%-4.7%; I2 = 0%) (P < 0.0001). CONCLUSIONS Venous stenting in patients with PT results in a substantial decrease and often complete resolution of symptoms. PT is more likely to recur in patients with IIH-associated PT.
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Affiliation(s)
- Derrek Schartz
- Department of Neurosurgery, University of Rochester Medical Center, Rochester, New York, USA; Department of Imaging Sciences, University of Rochester Medical Center, Rochester, New York, USA.
| | - Alan Finkelstein
- Department of Imaging Sciences, University of Rochester Medical Center, Rochester, New York, USA
| | - Sajal Medha K Akkipeddi
- Department of Neurosurgery, University of Rochester Medical Center, Rochester, New York, USA
| | - Zoe Williams
- Department of Ophthalmology, University of Rochester Medical Center, Rochester, New York, USA
| | - Edward Vates
- Department of Neurosurgery, University of Rochester Medical Center, Rochester, New York, USA
| | - Matthew T Bender
- Department of Neurosurgery, University of Rochester Medical Center, Rochester, New York, USA
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Subramanian PS. Novel Approaches to the Treatment of Idiopathic Intracranial Hypertension. Curr Neurol Neurosci Rep 2024; 24:265-272. [PMID: 38864967 DOI: 10.1007/s11910-024-01347-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/30/2024] [Indexed: 06/13/2024]
Abstract
PURPOSE OF REVIEW Idiopathic intracranial hypertension (IIH) typically affects women of childbearing age, is associated with recent weight gain, and can result in debilitating headache as well as papilledema that can cause vision loss. There have been advances in the medical and surgical treatment of affected patients with IIH that can improve outcomes and tolerability of therapy. RECENT FINDINGS Medical treatment with agents that lower intracranial pressure through pathways other than carbonic anhydrase inhibition are being developed, and medically-directed weight loss as well as bariatric surgery now may be considered as primary therapy. New surgical options including venous sinus stenting have shown efficacy even with cases of severe vision loss. Our treatment options for IIH patients are becoming more diverse, and individualized treatment decisions are now possible to address specific components of the patient's disease manifestations and to lead to IIH remission.
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Affiliation(s)
- Prem S Subramanian
- Department of Ophthalmology, Neurology, and Neurosurgery, University of Colorado School of Medicine, Sue Anschutz-Rodgers University of Colorado Eye Center, Aurora, CO, USA.
- Department of Surgery (Division of Ophthalmology), Uniformed Services University of the Health Sciences, Bethesda, MD, USA.
- UCHealth Eye Center, 1675 Aurora Ct Mail Stop F731, 80045, Aurora, CO, USA.
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Azzam AY, Mortezaei A, Morsy MM, Essibayi MA, Ghozy S, Elamin O, Azab MA, Elswedy A, Altschul D, Kadirvel R, Brinjikji W, Kallmes DF. Venous sinus stenting for idiopathic intracranial hypertension: An updated Meta-analysis. J Neurol Sci 2024; 459:122948. [PMID: 38457956 DOI: 10.1016/j.jns.2024.122948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 02/11/2024] [Accepted: 03/04/2024] [Indexed: 03/10/2024]
Abstract
BACKGROUND Idiopathic intracranial hypertension (IIH) is characterized by elevated intracranial pressure and primarily affects obese women of reproductive age. Venous sinus stenting (VSS) is a surgical procedure used to treat IIH, but its safety and efficacy are still controversial. METHODS A systematic review and meta-analysis were conducted following PRISMA guidelines. Multiple databases were searched for studies evaluating the safety and efficacy of VSS in IIH patients and meta-analysis was performed to pool the data. RESULTS A total of 36 studies involving 1066 patients who underwent VSS were included. After VSS, a significant reduction in trans-stenotic gradient pressure was observed. Patients also showed significantly lower cerebrospinal fluid (CSF) opening pressure. Clinical outcomes demonstrated improvement in tinnitus (95%), papilledema (89%), visual disturbances (88%), and headache (79%). However, 13.7% of patients experienced treatment failure or complications. The treatment failure rate was 8.35%, characterized by worsening symptoms and recurrence of IIH. The complications rate was 5.35%, including subdural hemorrhage, urinary tract infection, stent thrombus formation, and others. CONCLUSION VSS appears to be a safe and effective treatment option for IIH patients who are unresponsive to medical therapy or have significant visual symptoms. However, long-term outcomes and safety of the procedure require further investigation.
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Affiliation(s)
- Ahmed Y Azzam
- Montefiore-Einstein Cerebrovascular Research Lab, Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, NY, USA; Faculty of Medicine, October 6 University, Giza, Egypt; Department of Radiology, Mayo Clinic, Rochester, MN, USA.
| | - Ali Mortezaei
- Montefiore-Einstein Cerebrovascular Research Lab, Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Mahmoud M Morsy
- Montefiore-Einstein Cerebrovascular Research Lab, Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, NY, USA; Faculty of Medicine, October 6 University, Giza, Egypt
| | - Muhammed Amir Essibayi
- Montefiore-Einstein Cerebrovascular Research Lab, Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, NY, USA; Department of Neurological Surgery, Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Sherief Ghozy
- Department of Radiology, Mayo Clinic, Rochester, MN, USA; Department of Neurologic Surgery, Mayo Clinic, Rochester, MN, USA
| | - Osman Elamin
- Department of Neurosurgery, Jordan Hospital, Amman, Jordan
| | - Mohammed A Azab
- Department of Neurosurgery, Cleveland Clinic Foundation, OH, USA
| | - Adam Elswedy
- Faculty of Medicine, October 6 University, Giza, Egypt; Biomedicinskt Centrum BMC, Uppsala University, Husargatan 3, Uppsala 752 37, Sweden
| | - David Altschul
- Montefiore-Einstein Cerebrovascular Research Lab, Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, NY, USA; Department of Neurological Surgery, Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Ramanathan Kadirvel
- Department of Radiology, Mayo Clinic, Rochester, MN, USA; Department of Neurologic Surgery, Mayo Clinic, Rochester, MN, USA
| | - Waleed Brinjikji
- Department of Radiology, Mayo Clinic, Rochester, MN, USA; Department of Neurologic Surgery, Mayo Clinic, Rochester, MN, USA
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Lim J, Monteiro A, Kuo CC, Jacoby WT, Cappuzzo JM, Becker AB, Davies JM, Snyder KV, Levy EI, Siddiqui AH. Stenting for Venous Sinus Stenosis in Patients With Idiopathic Intracranial Hypertension: An Updated Systematic Review and Meta-Analysis of the Literature. Neurosurgery 2024; 94:648-656. [PMID: 37830801 DOI: 10.1227/neu.0000000000002718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 08/20/2023] [Indexed: 10/14/2023] Open
Abstract
BACKGROUND AND OBJECTIVES Although venous sinus stenting (VSS) improves cerebrospinal fluid reabsorption and decreases intracranial pressure in patients with idiopathic intracranial hypertension (IIH), the underlying pathophysiology of IIH is not well understood. We present a review and meta-analysis of the literature on VSS for IIH treatment, focusing on the rates of restenosis and symptom recurrence. METHODS We performed a systematic review of PubMed and Embase databases between January 1, 2011, and December 31, 2021. Articles including ≥5 patients with IIH and venous sinus stenosis treated with VSS and post-treatment rates of restenosis (de novo stenosis at a different anatomic location along the dural sinuses or restenosis within or adjacent to the stent) were selected. Demographic, procedural, and outcomes data were collected and analyzed. Mean values for variables collected were pooled, and a mean value was calculated with a 95% CI. RESULTS Twenty-four articles were included, comprising 694 patients and 781 VSS cases. The mean age was 33.9 (CI, 31.5-36.2) years. The mean body mass index was 35.3 (CI, 32.9-37.7) kg/m 2 . Before VSS, 98.8% (CI, 96.8%-100.0%) of patients experienced headaches, 87.7% (CI, 80.6%-95.5%) had visual acuity issues, 78.7% (CI, 69.9%-88.5%) had papilledema, 58.3% (CI, 46.0%-73.9%) had tinnitus, and 98.8% (96.4%-100.0%) had symptoms refractory to previous therapies. After VSS, 77.7% (CI, 71.1%-84.95%) experienced symptom improvement and 22.3% (CI, 15.1%-29.0%) had persistent or worsened symptoms. Pooled restenosis rate was 17.7% (CI, 14.9%-20.9%). CONCLUSION VSS is effective in alleviating IIH signs and symptoms, but the associated high rates of restenosis and persistent symptoms highlight the need for further investigation of this procedure and other adjunctive treatments for IIH.
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Affiliation(s)
- Jaims Lim
- Department of Neurosurgery, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo , New York , USA
- Department of Neurosurgery, Gates Vascular Institute at Kaleida Health, Buffalo , New York , USA
| | - Andre Monteiro
- Department of Neurosurgery, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo , New York , USA
- Department of Neurosurgery, Gates Vascular Institute at Kaleida Health, Buffalo , New York , USA
| | - Cathleen C Kuo
- Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo , New York , USA
| | - Wady T Jacoby
- Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo , New York , USA
| | - Justin M Cappuzzo
- Department of Neurosurgery, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo , New York , USA
- Department of Neurosurgery, Gates Vascular Institute at Kaleida Health, Buffalo , New York , USA
| | - Alexander B Becker
- Department of Neurosurgery, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo , New York , USA
- Department of Neurosurgery, Gates Vascular Institute at Kaleida Health, Buffalo , New York , USA
| | - Jason M Davies
- Department of Neurosurgery, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo , New York , USA
- Department of Neurosurgery, Gates Vascular Institute at Kaleida Health, Buffalo , New York , USA
- Department of Bioinformatics, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo , New York , USA
- Canon Stroke and Vascular Research Center, University at Buffalo, Buffalo , New York , USA
- Jacobs Institute, Buffalo , New York , USA
| | - Kenneth V Snyder
- Department of Neurosurgery, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo , New York , USA
- Department of Neurosurgery, Gates Vascular Institute at Kaleida Health, Buffalo , New York , USA
- Canon Stroke and Vascular Research Center, University at Buffalo, Buffalo , New York , USA
- Jacobs Institute, Buffalo , New York , USA
| | - Elad I Levy
- Department of Neurosurgery, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo , New York , USA
- Department of Neurosurgery, Gates Vascular Institute at Kaleida Health, Buffalo , New York , USA
- Canon Stroke and Vascular Research Center, University at Buffalo, Buffalo , New York , USA
- Jacobs Institute, Buffalo , New York , USA
- Department of Radiology, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo , New York , USA
| | - Adnan H Siddiqui
- Department of Neurosurgery, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo , New York , USA
- Department of Neurosurgery, Gates Vascular Institute at Kaleida Health, Buffalo , New York , USA
- Canon Stroke and Vascular Research Center, University at Buffalo, Buffalo , New York , USA
- Jacobs Institute, Buffalo , New York , USA
- Department of Radiology, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo , New York , USA
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Pandey A, Schreiber C, Garton ALA, Jung B, Goldberg JL, Kocharian G, Carnevale JA, Boddu SR. Future Directions and Innovations in Venous Sinus Stenting. World Neurosurg 2024; 184:387-394. [PMID: 38590072 DOI: 10.1016/j.wneu.2023.12.128] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Accepted: 12/22/2023] [Indexed: 04/10/2024]
Abstract
This review explores the future role of venous sinus stenting (VSS) in the management of idiopathic intracranial hypertension and pulsatile tinnitus. Despite its favorable safety profile and clinical outcomes compared with traditional treatments, VSS is not yet the standard of care for these conditions, lacking high-level evidence data and guidelines for patient selection and indications. Current and recently completed clinical trials are expected to provide data to support the adoption of VSS as a primary treatment option. Additionally, VSS shows potential in treating other conditions, such as dural arteriovenous fistula and cerebral venous sinus thrombosis, and it is likely that the procedure will continue to see an expansion of its approved indications. The current lack of dedicated venous stenting technology is being addressed with promising advancements, which may improve procedural ease and patient outcomes. VSS also offers potential for expansion into modulation of brain electrophysiology via endovascular routes, offering exciting possibilities for neurodiagnostics and treatment of neurodegenerative disorders.
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Affiliation(s)
- Abhinav Pandey
- Department of Neurological Surgery, Weill Cornell Medicine/NewYork-Presbyterian Hospital, New York, New York, USA
| | - Craig Schreiber
- Department of Neurological Surgery, Weill Cornell Medicine/NewYork-Presbyterian Hospital, New York, New York, USA
| | - Andrew L A Garton
- Department of Neurological Surgery, Weill Cornell Medicine/NewYork-Presbyterian Hospital, New York, New York, USA
| | - Brandon Jung
- Human Health Major (BA), Emory University, Atlanta, Georgia, USA
| | - Jacob L Goldberg
- Department of Neurological Surgery, Weill Cornell Medicine/NewYork-Presbyterian Hospital, New York, New York, USA
| | - Gary Kocharian
- Department of Neurological Surgery, Weill Cornell Medicine/NewYork-Presbyterian Hospital, New York, New York, USA
| | - Joseph A Carnevale
- Department of Neurological Surgery, Weill Cornell Medicine/NewYork-Presbyterian Hospital, New York, New York, USA
| | - Srikanth R Boddu
- Department of Neurological Surgery, Weill Cornell Medicine/NewYork-Presbyterian Hospital, New York, New York, USA.
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6
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Pandey A, Schreiber C, Garton ALA, Jung B, Goldberg JL, Kocharian G, Carnevale JA, Boddu SR. Challenges in the use of Venous Sinus Stenting in the Treatment of Idiopathic Intracranial Hypertension and Pulsatile Tinnitus. World Neurosurg 2024; 184:372-386. [PMID: 38590071 DOI: 10.1016/j.wneu.2023.12.164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Accepted: 12/30/2023] [Indexed: 04/10/2024]
Abstract
Although numerous case series and meta-analyses have shown the efficacy of venous sinus stenting (VSS) in the treatment of idiopathic intracranial hypertension and idiopathic intracranial hypertension-associated pulsatile tinnitus, there remain numerous challenges to be resolved. There is no widespread agreement on candidacy; pressure gradient and failed medical treatment are common indications, but not all clinicians require medical refractoriness as a criterion. Venous manometry, venography, and cerebral angiography are essential tools for patient assessment, but again disagreements exist regarding the best, or most appropriate, diagnostic imaging choice. Challenges with the VSS technique also exist, such as stent choice and deployment. There are considerations regarding postprocedural balloon angioplasty and pharmacologic treatment, but there is insufficient evidence to formalize postoperative decision making. Although complications of VSS are relatively rare, they include in-stent stenosis, hemorrhage, and subdural hematoma, and the learning curve for VSS presents specific challenges in navigating venous anatomy, emphasizing the need for wider availability of high-quality training. Recurrence of symptoms, particularly stent-adjacent stenosis, poses challenges, and although restenting and cerebrospinal fluid-diverting procedures are options, there is a need for clearer criteria for retreatment strategies. Despite these challenges, when comparing VSS with traditional cerebrospinal fluid-diverting procedures, VSS emerges as a favorable option, with strong clinical outcomes, lower complication rates, and cost-effectiveness. Further research is necessary to refine techniques and indications and address specific aspects of VSS to overcome these challenges.
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Affiliation(s)
- Abhinav Pandey
- Department of Neurological Surgery, Weill Cornell Medicine/NewYork-Presbyterian Hospital, New York, New York, USA
| | - Craig Schreiber
- Department of Neurological Surgery, Weill Cornell Medicine/NewYork-Presbyterian Hospital, New York, New York, USA
| | - Andrew L A Garton
- Department of Neurological Surgery, Weill Cornell Medicine/NewYork-Presbyterian Hospital, New York, New York, USA
| | | | - Jacob L Goldberg
- Department of Neurological Surgery, Weill Cornell Medicine/NewYork-Presbyterian Hospital, New York, New York, USA
| | - Gary Kocharian
- Department of Neurological Surgery, Weill Cornell Medicine/NewYork-Presbyterian Hospital, New York, New York, USA
| | - Joseph A Carnevale
- Department of Neurological Surgery, Weill Cornell Medicine/NewYork-Presbyterian Hospital, New York, New York, USA
| | - Srikanth R Boddu
- Department of Neurological Surgery, Weill Cornell Medicine/NewYork-Presbyterian Hospital, New York, New York, USA.
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Filip P, Patel EA, Khalife S, Baird AM, Dominy C, Joshi K, Feng R, Munich S, Stosic M, Szewka AJ, Shrivastava R, Govindaraj S, Papagiannopoulos P, Batra PS, Tajudeen BA. Multiple skull base defects in the setting of spontaneous cerebrospinal fluid rhinorrhea; a dual institution view. Am J Otolaryngol 2024; 45:104048. [PMID: 37769505 DOI: 10.1016/j.amjoto.2023.104048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2023] [Accepted: 09/12/2023] [Indexed: 10/03/2023]
Abstract
PURPOSE Idiopathic intracranial hypertension (IIH) is a condition of high cerebrospinal fluid (CSF) pressure that presents with CSF leak. The implications of multiple skull base defects (SBD) and associated synchronous CSF leaks have not been previously explored. MATERIALS AND METHODS A dual institutional case-control study examined multiple SBD's and encephaloceles on the risk of CSF leak and postoperative failures post-repair. IIH patients with CSF leaks and IIH controls without leaks were selected retrospectively. Chi square analysis evaluated for statistically significant alterations in probability with CSF leak development. RESULTS 192 patients were selected with 108 IIH controls and 84 spontaneous CSF leak cases. Signs and symptoms for IIH controls and CSF leak cases respectively were pulsatile tinnitus (60.2 % and 29.8 %), headaches (96.3 % and 63.1 %), papilledema (74.1 % and 12.5 %), visual field defects (60.8 % and 13 %) (p < 0.001). Encephalocele formation in controls was 3.7 % compared to cases at 91.6 % (p < 0.001). Multiple SBD's in controls compared cases was 0.9 % and 46.4 % respectively (p < 0.001). Subgroup analysis of CSF leak cases showed 15 patients with two CSF leak repairs due to a recurrence. 27 (39.1 %) single leak cases had multiple SDB's while 12 (80 %) recurrent leaks had multiple SDB's (p = 0.004). CONCLUSIONS Patients with radiographic evidence of multiple SBD's and encephaloceles represent a high-risk population with a propensity for CSF leaks. Secondary SBD's are common in patients with spontaneous CSF rhinorrhea and higher in patients with a recurrence.
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Affiliation(s)
- Peter Filip
- Department of Otorhinolaryngology-Head and Neck Surgery, Rush University Medical Center, Chicago, IL, USA
| | - Evan A Patel
- Department of Otorhinolaryngology-Head and Neck Surgery, Rush University Medical Center, Chicago, IL, USA
| | - Sarah Khalife
- Department of Otorhinolaryngology-Head and Neck Surgery, Rush University Medical Center, Chicago, IL, USA
| | - Ali M Baird
- Department of Otorhinolaryngology-Head and Neck Surgery, Rush University Medical Center, Chicago, IL, USA
| | - Calista Dominy
- Department of Otorhinolaryngology-Head and Neck Surgery, Icahn School of Medicine at Mount Sinai, New York City, NY, USA
| | - Krishna Joshi
- Department of Neurological Surgery, Rush University Medical Center, Chicago, IL, USA
| | - Rui Feng
- Department of Neurological Surgery, Icahn School of Medicine at Mount Sinai, New York City, NY, USA
| | - Stephan Munich
- Department of Neurological Surgery, Rush University Medical Center, Chicago, IL, USA
| | - Milena Stosic
- Department of Neurological Science, Rush University Medical Center, Chicago, IL, USA
| | - Aimee J Szewka
- Department of Neurological Science, Rush University Medical Center, Chicago, IL, USA; Department of Ophthalmology, Rush University Medical Center, Chicago, IL, USA
| | - Raj Shrivastava
- Department of Neurological Surgery, Icahn School of Medicine at Mount Sinai, New York City, NY, USA
| | - Satish Govindaraj
- Department of Otorhinolaryngology-Head and Neck Surgery, Icahn School of Medicine at Mount Sinai, New York City, NY, USA
| | - Peter Papagiannopoulos
- Department of Otorhinolaryngology-Head and Neck Surgery, Rush University Medical Center, Chicago, IL, USA
| | - Pete S Batra
- Department of Otorhinolaryngology-Head and Neck Surgery, Rush University Medical Center, Chicago, IL, USA
| | - Bobby A Tajudeen
- Department of Otorhinolaryngology-Head and Neck Surgery, Rush University Medical Center, Chicago, IL, USA.
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8
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Dinkin MJ, Patsalides A. Idiopathic Intracranial Venous Hypertension: Toward a Better Understanding of Venous Stenosis and the Role of Stenting in Idiopathic Intracranial Hypertension. J Neuroophthalmol 2023; 43:451-463. [PMID: 37410913 DOI: 10.1097/wno.0000000000001898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/08/2023]
Abstract
BACKGROUND Venous sinus stenosis, typically at the junction of the transverse and sigmoid sinus, is increasingly recognized as a contributor to the pathophysiology of idiopathic intracranial hypertension (IIH), whether it be the intrinsic type that does not reverse with normalization of intracranial pressure or the extrinsic type, which does. Efforts to treat the stenosis and reduce the associated transstenotic gradient through placement of a stent at the site of stenosis have been studied over the past 2 decades, primarily through retrospective studies, with variable emphasis on formal visual testing and direct assessment of poststent opening pressure. Most studies have presented evidence for utilization of stenting as an alternative to cerebrospinal fluid shunting or optic nerve sheath fenestration in patients with IIH who harbor the stenosis and are refractory to or intolerant of intracranial pressure-lowering medications, but an assessment of the current data is needed to better understand the role of stenting for this patient population. EVIDENCE ACQUISITION A search in PubMed was made for "IIH," "papilledema," and "venous stenting." Data pre and post stenting, including symptoms attributable to IIH, intracranial pressure, papilledema, retinal nerve fiber layer thickening on optical coherence tomography, and visual field assessment (mean deviation), were collected. Need for retreatment and complications were assessed among all studies. Studies using stenting for special circumstances, such as cerebrospinal leaks or for stenosis along anomalous vessels, were reviewed. RESULTS In total, 49 studies (45 retrospective and 4 prospective) and 18 case reports (with 3 or less patients) were found and included in the analysis, for a total of 1,626 patients. In 250 patients in whom poststent intracranial pressure was measured, the mean value was 19.7 cm H 2 O, reduced from a mean of 33 cm H 2 O. Transient visual obscurations resolved in 79.6% of 201 patients who complained of it, pulsatile tinnitus resolved in 84.7% of 515, diplopia resolved in 93% of 86 patients, and nonspecific visual symptoms such as "blurry vision" improved in 76.2% of 537 patients. Headaches resolved in 36% and improved in a further 40.7% of 1,105 patients in whom they were documented before stenting. Of 1,116 with papilledema, 40.8% demonstrated resolution and 38.2% improvement. The mean retinal nerve fiber layer thickness improved from 170.2 µm to 89.2 µm among 402 eyes in which optical coherence tomography was used to measure it. Among 135 eyes in which formal visual fields were performed pre and post stenting, the prestent average mean deviation of -7.35 dB improved to -4.72 dB after stenting. Complications associated with stenting included in-stent stenosis or thrombosis, subdural hematoma, intracerebral hematoma, cerebral edema, stent migration, and death. A recurrence of symptoms requiring a follow-up surgical intervention occurred in 9%. CONCLUSIONS A growing body of evidence supports the use of venous sinus stenting as a viable option for medically refractory IIH, especially when papilledema threatens visual function. Complication and failure rates seem to be similar to alternative surgical approaches, although serious neurological sequalae can rarely occur. Emerging studies evaluating stent type, including novel stents designed for use in the venous system, may help improve ease of the procedure and long-term success rates. Prospective head-to-head studies are needed to better understand the performance of stenting compared with other interventions.
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Affiliation(s)
- Marc J Dinkin
- Department of Ophthalmology and Neurology (MJD), Weill Cornell Medicine, New York Presbyterian Hospital, New York, NY; and Department of Neurosurgery (AP), North Shore University Hospital, Northwell Health, Great Neck, NY
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9
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Rozen TD, Devcic Z, Lewis AR, Sandhu SJS, Erben Y, Toskich BB. A secondary daily persistent headache from onset with underlying nutcracker physiology and spinal epidural venous congestion: case series with lumbar vein embolization as a therapeutic approach. Ther Adv Neurol Disord 2023; 16:17562864231213243. [PMID: 38021477 PMCID: PMC10666676 DOI: 10.1177/17562864231213243] [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: 06/26/2023] [Accepted: 10/24/2023] [Indexed: 12/01/2023] Open
Abstract
The authors have published on a unique subset of patients whose headaches worsened in the Trendelenburg position and who on time-resolved MR angiography demonstrated left renal vein compression (nutcracker physiology) with retrograde left second lumbar vein (L2LV) flow and regional spinal epidural venous plexus (EVP) congestion. We hypothesized that the spinal EVP congestion subsequently causes a secondary congestion of the cerebral venous system, which then leads to an elevation of CSF pressure above that individuals CSF pressure set point. This results in a daily headache from onset. Thus, eliminating the spinal EVP could conceivably improve or eliminate the manifested headache syndrome. We now present a case series of four patients with long-term follow-up utilizing lumbar vein coil embolization as a new therapeutic approach. In each patient, the MR angiography findings were verified by catheter-based venography. Treatment consisted of endovascular embolization of the second lumbar vein. Four patients have had coil embolization of which three are 1 year or longer from their procedure while one is 10 months posttreatment. All patients were women. Duration of daily headache prior to embolization ranged from 4 to 8 years. Post-embolization: Three patients are either headache free or 90-95% improved with substantial pain free time. There were no procedure-related complications. Our results suggest that embolization of L2LV in a specific patient population with nutcracker physiology may substantially improve head pain issues. This is a minimally invasive outpatient technique with no apparent side effects.
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Affiliation(s)
- Todd D. Rozen
- Division of Neurology, Mayo Clinic Jacksonville, 4500 San Pablo Road, Jacksonville, FL 32224, USA
| | - Zlatko Devcic
- Division of Interventional Radiology, Mayo Clinic Florida, Jacksonville, FL, USA
| | - Andrew R. Lewis
- Division of Interventional Radiology, Mayo Clinic Florida, Jacksonville, FL, USA
| | | | - Young Erben
- Division of Vascular and Endovascular Surgery, Mayo Clinic Florida, Jacksonville, FL, USA
| | - Beau B. Toskich
- Division of Interventional Radiology, Mayo Clinic Florida, Jacksonville, FL, USA
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10
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El Naamani K, Abbas R, Tjoumakaris SI, Herial NA, Zarzour H, Schmidt RF, Rosenwasser RH, Jabbour PM, Evans J, Gooch MR. Venous sinus stenting for idiopathic intracranial hypertension patients with functioning ventriculoperitoneal shunts: A case series. Clin Neurol Neurosurg 2023; 233:107894. [PMID: 37499303 DOI: 10.1016/j.clineuro.2023.107894] [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: 06/04/2023] [Revised: 07/10/2023] [Accepted: 07/11/2023] [Indexed: 07/29/2023]
Abstract
Idiopathic intracranial hypertension (IIH) is a disease defined by increased intracranial pressure and associated with a variety of symptoms ranging from headaches to tinnitus. Ventricular peritoneal shunting has been the mainstay treatment for patients with IIH. Although VPS's have shown efficacy in treating IIH, some patients complain of refractory symptoms even with functioning VPS's. Venus stenting has emerged as a new technique for treating these refractory symptoms. Despite the scarce literature pertaining its efficacy and safety profile, several small studies have shown promising results. In this case series, four patients with IIH complained of refractory symptoms despite functioning VPS's and were treated with venous stenting.
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Affiliation(s)
- Kareem El Naamani
- Department of Neurological Surgery, Thomas Jefferson University Hospital, Philadelphia, PA, USA
| | - Rawad Abbas
- Department of Neurological Surgery, Thomas Jefferson University Hospital, Philadelphia, PA, USA
| | | | - Nabeel A Herial
- Department of Neurological Surgery, Thomas Jefferson University Hospital, Philadelphia, PA, USA
| | - Hekmat Zarzour
- Department of Neurological Surgery, Thomas Jefferson University Hospital, Philadelphia, PA, USA
| | - Richard F Schmidt
- Department of Neurological Surgery, Thomas Jefferson University Hospital, Philadelphia, PA, USA
| | - Robert H Rosenwasser
- Department of Neurological Surgery, Thomas Jefferson University Hospital, Philadelphia, PA, USA
| | - Pascal M Jabbour
- Department of Neurological Surgery, Thomas Jefferson University Hospital, Philadelphia, PA, USA
| | - James Evans
- Department of Neurological Surgery, Thomas Jefferson University Hospital, Philadelphia, PA, USA
| | - M Reid Gooch
- Department of Neurological Surgery, Thomas Jefferson University Hospital, Philadelphia, PA, USA.
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11
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Ong F, Phillips T, Selkirk G, McAuliffe W. Intracranial venous stenting for idiopathic intracranial hypertension. J Med Imaging Radiat Oncol 2023; 67:526-530. [PMID: 36645196 DOI: 10.1111/1754-9485.13505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Accepted: 12/31/2022] [Indexed: 01/17/2023]
Abstract
INTRODUCTION There is increasing evidence in the literature to support venous sinus stenting in patients with idiopathic intracranial hypertension who fail first-line therapy. Venous sinus stenting is a safe and successful technique compared with cerebrospinal fluid diversion procedures. This study examines the clinical outcomes of patients post intracranial venous stenting for intracranial hypertension across three tertiary hospitals in Western Australia. METHODS A retrospective analysis was performed on 83 consecutive patients treated with intracranial venous stenting for IIH at three tertiary hospitals from October 2013 to March 2020. Data were collected from outpatient clinic letters, electronic discharge letters, electronic radiological imaging and procedural reports. RESULTS 89.2% patients were able to cease Acetazolomide post stenting. 78.3% patients reported resolution of headaches. 84.3% patients demonstrated resolution of their papilloedema. 91.6% patients demonstrated improvement of their visual acuity. Compared with a recent meta-analysis by Satti and Chaudry in 2015, our results demonstrated a higher technical success rate and lower complication rates. CONCLUSION Our study findings support the paradigm shift from CSF diversion procedures to venous sinus stenting in patients with IIH who fail first-line therapy. Venous sinus stenting has a high technical success rate and significantly lower complication rates than other invasive treatments.
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Affiliation(s)
- Frederick Ong
- Neurological Intervention and Imaging Service of Western Australia, Sir Charles Gairdner Hospital, Perth, Western Australia, Australia
| | - Timothy Phillips
- Neurological Intervention and Imaging Service of Western Australia, Sir Charles Gairdner Hospital, Perth, Western Australia, Australia
| | - Gregory Selkirk
- Neurological Intervention and Imaging Service of Western Australia, Sir Charles Gairdner Hospital, Perth, Western Australia, Australia
| | - William McAuliffe
- Neurological Intervention and Imaging Service of Western Australia, Sir Charles Gairdner Hospital, Perth, Western Australia, Australia
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12
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Kole MJ, Martinez-Gutierrez JC, Sanchez F, Tang R, Chen PR. Dural venous sinus stenting in patients with idiopathic intracranial hypertension: report of outcomes from a single-center prospective database and literature review. EXPERT REVIEW OF OPHTHALMOLOGY 2022. [DOI: 10.1080/17469899.2022.2139678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Matthew J Kole
- Department of Neurosurgery, University of Texas Health Science Center at Houston, Houston, Texas, USA
| | | | | | - Rosa Tang
- Eye Wellness Center, Houston, Texas, USA
| | - P Roc Chen
- Department of Neurosurgery, University of Texas Health Science Center at Houston, Houston, Texas, USA
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13
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Bai C, Chen Z, Wu X, Ilagan R, Ding Y, Ji X, Meng R. Safety and efficacy comparison between OACs plus single antiplatelet and dual antiplatelet therapy in patients with cerebral venous sinus stenosis poststenting. BMC Neurol 2022; 22:209. [PMID: 35668360 PMCID: PMC9169277 DOI: 10.1186/s12883-022-02731-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Accepted: 05/26/2022] [Indexed: 11/15/2022] Open
Abstract
Background and purpose The present strategies regarding poststent management for cerebral venous sinus stenosis (CVSS) are inconsistent. Herein, we compared the safety and efficacy of oral anticoagulants (OACs) plus single antiplatelet therapy and dual antiplatelet therapy for CVSS poststenting. Methods A real-world observational study conducted from January 2009 through October 2019 enrolled patients who were diagnosed with CVSS and received stenting. Patients were divided into two groups according to the management they received poststenting. Group 1: OACs plus a single antiplatelet agent (clopidogrel 75 mg or aspirin 100 mg) and Group 2: dual antiplatelet therapy (clopidogrel 75 mg plus aspirin 100 mg). The safety (such as major or minor bleeding or venous thrombosis) and efficacy (the incidences of cerebral venous sinus restenosis, intrastent thrombosis, or stent displacement) of the two groups were compared. Results There were a total of 110 eligible patients in the final analysis, including 79 females and 31 males with a mean age of 43.42 ± 13.23 years. No major bleeding or venous thrombosis occurred in either of the two groups. Two minor bleeding events occurred in group 2 (one with subcutaneous bleeding points in both lower limbs, another with submucosal bleeding in the mouth), whereas no bleeding events occurred in Group 1. In addition, at the 1-year follow-up, one case of intraluminal restenosis and two cases of in-stent thrombi occurred in Group 2, while none occurred in Group 1. Neither stenosis at stent-adjacent segments nor stent migration was detected in either group during the 1-year following stent placement. Conclusion OACs plus single antiplatelet therapy and dual antiplatelet therapy alone are both safe and efficacious management strategies after CVSS stent placement. The former may have more advantages than the latter for inhibiting intrastent thrombosis. However, further research by larger, multicenter clinical trials is needed.
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14
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Reier L, Fowler JB, Arshad M, Hadi H, Whitney E, Farmah AV, Siddiqi J. Optic Disc Edema and Elevated Intracranial Pressure (ICP): A Comprehensive Review of Papilledema. Cureus 2022; 14:e24915. [PMID: 35698673 PMCID: PMC9187153 DOI: 10.7759/cureus.24915] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Accepted: 05/11/2022] [Indexed: 11/22/2022] Open
Abstract
Papilledema is a swelling of the optic disc secondary to elevated intracranial pressure (ICP). We analyzed 79 peer-review journal articles and provided a concise summary of the etiology, epidemiology, pathophysiology, clinical presentation, evaluation, natural history, differential diagnosis, treatment, and prognosis of papilledema. Only studies written in English with the full text available were included. Although many etiologies of papilledema exist, idiopathic intracranial hypertension is the most common and, thus, a large focus of this review.
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15
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Akhter A, Schulz L, Inger H, McGregor JM. Current Indications for Management Options in Pseudotumor Cerebri. Neurol Clin 2022; 40:391-404. [DOI: 10.1016/j.ncl.2021.11.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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16
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Papilledema. Neuroophthalmology 2022. [DOI: 10.1007/978-981-19-4668-4_11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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17
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Dural venous sinus stenting in the treatment of idiopathic intracranial hypertension: A systematic review and critique of literature. Surv Ophthalmol 2021; 67:271-287. [PMID: 34004224 DOI: 10.1016/j.survophthal.2021.05.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2020] [Revised: 04/23/2021] [Accepted: 05/03/2021] [Indexed: 12/19/2022]
Abstract
Idiopathic intracranial hypertension (IIH) is increased intracranial pressure without a known cause. Dural venous sinus stenting (DVSS) is a relatively new intervention for treatment of IIH refractory to medical therapy and lifestyle modifications. In this review, we outline various hypotheses of IIH pathogenesis and describe the role of venous sinus stenosis and the technical details of DVSS. We also present a summary and critique of the available evidence describing the outcomes of DVSS in IIH and review the evidence-based guidelines for this procedure. We conclude that, although many studies have shown generally favorable outcomes of DVSS in patients with IIH, most have serious limitations, the most common one being paucity of pre- and postprocedure ophthalmological data. Thus, there is not enough available evidence to conclude whether DVSS is an effective procedure for treatment of IIH. We also present the most commonly used indications for DVSS as described in the literature and stress the importance of neuro-ophthalmological assessment before and after the procedure to monitor response and potential complications.
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18
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Fiani B, Kondilis A, Doan T, Runnels J, Fiani NJ, Sarno E. Venous sinus stenting for intractable pulsatile tinnitus: A review of indications and outcomes. Surg Neurol Int 2021; 12:81. [PMID: 33767885 PMCID: PMC7982104 DOI: 10.25259/sni_1_2021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2021] [Accepted: 02/09/2021] [Indexed: 12/19/2022] Open
Abstract
Background: Pulsatile tinnitus presents as a unique variation of tinnitus in which a conscious perception of the heartbeat is localized to the ears in either unilateral or bilateral fashion. The sensation is typically caused by an increase in turbulent blood flow in the affected ear, in most cases, due to a structural abnormality of the venous sinuses – the most common of which being stenosis. Herein, we discuss the etiology of pulsatile tinnitus followed by indications for treatment of various pathologies which have been successfully treated with venous sinus stenting and have led to resolution of auditory symptoms. Methods: The authors queried PubMed database using combinations of the keywords “venous sinus stenting,” “endovascular treatment,” and “pulsatile tinnitus” to identify relevant studies published in English after 2001 and before December 1, 2020 and verified selected. Results: Our results corroborate those published in prior reviews reporting a high rate of pulsatile tinnitus resolution with venous sinus stenting. Conclusion: The success of venous sinus stenting is clinically relevant as an effective treatment option for patients suffering from pulsatile tinnitus. Future applications and studies are needed and are currently being developed to further demonstrate the effectiveness of stents in the treatment of pulsatile tinnitus.
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Affiliation(s)
- Brian Fiani
- Department of Neurosurgery, Desert Regional Medical Center, Palm Springs, California, CA, United States
| | - Athanasios Kondilis
- College of Osteopathic Medicine, Michigan State University, East Lansing, Michigan, United States
| | - Thao Doan
- University of Texas Medical Branch, Galveston, Texas, United States
| | - Juliana Runnels
- School of Medicine, University of New Mexico, Albuquerque, New Mexico, United States
| | - Nicholas J Fiani
- University of Medicine and Health Sciences Medical School, New York, NY, United States
| | - Erika Sarno
- College of Osteopathic Medicine, Michigan State University, East Lansing, Michigan, United States
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19
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Miki K, Sumita K, Fujii S, Fujita K, Aizawa Y, Karakama J, Yoshino Y, Emoto H, Nemoto S. A Case of Idiopathic Intracranial Hypertension Treated by Transverse Sinus Stenting. JOURNAL OF NEUROENDOVASCULAR THERAPY 2021; 15:653-658. [PMID: 37502372 PMCID: PMC10370568 DOI: 10.5797/jnet.cr.2020-0145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Accepted: 12/20/2020] [Indexed: 07/29/2023]
Abstract
Objective We report a patient with chronic headache due to idiopathic intracranial hypertension (IIH) associated with transverse sinus (TS) stenosis. The symptom improved after stent placement at the site of stenosis. Case Presentation The patient was a 37-year-old woman with progressive headache and diplopia as chief complaints. She had severe bilateral papilledema. Magnetic resonance imaging (MRI) and angiography revealed stenosis of the bilateral TS. Lumbar puncture demonstrated raised intracranial pressure and IIH was tentatively diagnosed. Visual impairment progressed despite oral acetazolamide therapy. A venous pressure gradient was monitored during stent placement. The pressure gradient improved after stenting. Dual antiplatelet therapy was initiated 1 week before the procedure. Papilledema and headache resolved immediately after the procedure. No in-stent stenosis or occlusion occurred during the follow-up period. Conclusion Stent placement for TS stenosis can improve the cerebral venous return in IIH patients. Although restenosis is possible, venous sinus stenting is considered an effective treatment.
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Affiliation(s)
- Kazunori Miki
- Department of Endovascular Surgery, Tokyo Medical and Dental University, Tokyo, Japan
| | - Kazutaka Sumita
- Department of Endovascular Surgery, Tokyo Medical and Dental University, Tokyo, Japan
| | - Shoko Fujii
- Department of Endovascular Surgery, Tokyo Medical and Dental University, Tokyo, Japan
| | - Kyohei Fujita
- Department of Endovascular Surgery, Tokyo Medical and Dental University, Tokyo, Japan
| | - Yuki Aizawa
- Department of Endovascular Surgery, Tokyo Medical and Dental University, Tokyo, Japan
- Department of Neurosurgery, Tokyo Medical and Dental University, Tokyo, Japan
| | - Jun Karakama
- Department of Neurosurgery, Tokyo Medical and Dental University, Tokyo, Japan
| | - Yoshikazu Yoshino
- Department of Neurosurgery, Jichi Medical University Saitama Medical Center, Saitama, Saitama, Japan
| | - Hirofumi Emoto
- Department of Ophthalmology & Visual Science, Tokyo Medical and Dental University, Tokyo, Japan
| | - Shigeru Nemoto
- Department of Endovascular Surgery, Tokyo Medical and Dental University, Tokyo, Japan
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20
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Case D, Seinfeld J, Roark C, Kumpe D. Idiopathic Intracranial Hypertension: Contemporary Management and Endovascular Techniques. Semin Intervent Radiol 2020; 37:175-181. [PMID: 32419730 DOI: 10.1055/s-0040-1709172] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Idiopathic intracranial hypertension (IIH) is a disease process of abnormally increased intracranial pressure in the absence of a mass lesion. Medical management, optic nerve fenestration, and surgical shunting procedures have failed to produce consistently successful results. In an unknown percentage of cases, IIH is caused by dural venous sinus obstruction which can be cured by endovascular treatment with dural venous sinus stent placement. This helps prevent progressive vision loss and worsening papilledema caused by underlying increased intracranial pressure from venous outflow obstruction. Patients are required to have an established diagnosis of IIH, preferably made by a neuroophthalmologist, with clearly documented papilledema or at minimum visual disturbance along with lumbar puncture opening pressure greater than 25 cm H 2 O. Transverse to sigmoid sinus focal narrowing (intraluminal filling defect or extrinsic compression) must be seen during the venous phase of neuroangiography (NA) along with a pressure gradient of 10 mm Hg or greater across the focal narrowing during dural venous sinus pressure monitoring. A successful reduction is defined as a pressure gradient of less than 10 mm Hg after stent placement. Neuroophthalmologic follow-up occurs within 1 to 2 months to assess for changes in papilledema. If papilledema is unchanged or worsened, NA and hemodynamic evaluation is repeated for consideration of restenting. Appropriate patient selection criteria are required for IIH venous sinus stenting. The utilization of refined endovascular techniques along with postprocedure follow-up protocols can ultimately cure IIH for a select group of patients.
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Affiliation(s)
- David Case
- Department of Neurosurgery, University of Colorado School of Medicine, Aurora, Colorado
| | - Joshua Seinfeld
- Department of Neurosurgery, University of Colorado School of Medicine, Aurora, Colorado
| | - Christopher Roark
- Department of Neurosurgery, University of Colorado School of Medicine, Aurora, Colorado
| | - David Kumpe
- Department of Radiology, University of Colorado School of Medicine, Aurora, Colorado
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21
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Kalyvas A, Neromyliotis E, Koutsarnakis C, Komaitis S, Drosos E, Skandalakis GP, Pantazi M, Gobin YP, Stranjalis G, Patsalides A. A systematic review of surgical treatments of idiopathic intracranial hypertension (IIH). Neurosurg Rev 2020; 44:773-792. [PMID: 32335853 DOI: 10.1007/s10143-020-01288-1] [Citation(s) in RCA: 66] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2019] [Revised: 03/10/2020] [Accepted: 03/17/2020] [Indexed: 01/28/2023]
Abstract
Idiopathic intracranial hypertension denotes raised intracranial pressure in the absence of an identifiable cause and presents with symptoms relating to elevated ICP, namely headaches and visual deterioration. Treatment of IIH aims at reducing intracranial pressure, relieving headache and salvaging patients' vision. Surgical interventions are recommended for medically refractory IIH and include CSF diversion techniques, optic nerve sheath fenestration, bariatric surgery and venous sinus stenting. Prospective studies on the surgical options for IIH are scant and no evidence-based guidelines for the surgical management of medically refractory IIH have been established. A search in Cochrane Library, MEDLINE and EMBASE from 1 January 1985 to 19 April 2019 for controlled or observational studies on the surgical treatment of IIH (defined in accordance with the modified Dandy or the modified Friedman criteria) in adults yielded 109 admissible studies. VSS improved papilledema, visual fields and headaches in 87.1%, 72.7% and 72.1% of the patients respectively, with a 2.3% severe complication rate and 11.3% failure rate. CSF diversion techniques diminished papilledema, visual field deterioration and headaches in 78.9%, 66.8% and 69.8% of the cases and are associated with a 9.4 severe complication rate and a 43.4% failure rate. ONSF ameliorated papilledema, visual field defects and headaches in 90.5, 65.2% and 49.3% of patients. Severe complication rate was 2.2% and failure rate was 9.4%. This is currently the largest systematic review for the available operative modalities for IIH. VSS provided the best results in headache resolution and visual outcomes, with low failure rates and a very favourable complication profile. In light of this, VSS ought to be regarded as the first-line surgical modality for the treatment of medically refractory IIH.
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Affiliation(s)
- Aristotelis Kalyvas
- Division of Neurosurgery, Toronto Western Hospital/University Health Network, University of Toronto, Toronto, ON, Canada. .,Department of Neurosurgery, Evangelismos Hospital, National and Kapodistrian University of Athens, Athens, Greece.
| | - Eleftherios Neromyliotis
- Department of Neurosurgery, Evangelismos Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - Christos Koutsarnakis
- Department of Neurosurgery, Evangelismos Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - Spyridon Komaitis
- Department of Neurosurgery, Evangelismos Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - Evangelos Drosos
- Department of Neurosurgery, Evangelismos Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - Georgios P Skandalakis
- Department of Anatomy, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Mantha Pantazi
- Department of Pediatrics, Hatzikosta General Hospital, Ioannina, Greece
| | - Y Pierre Gobin
- Department of Neurological Surgery, New York Presbyterian Hospital/Weill Cornell Medical Center, New York, NY, USA
| | - George Stranjalis
- Department of Neurosurgery, Evangelismos Hospital, National and Kapodistrian University of Athens, Athens, Greece.,Hellenic Center for Neurosurgical Research, "Petros Kokkalis", Athens, Greece
| | - A Patsalides
- Department of Neurological Surgery, New York Presbyterian Hospital/Weill Cornell Medical Center, New York, NY, USA
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22
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Gurney SP, Ramalingam S, Thomas A, Sinclair AJ, Mollan SP. Exploring The Current Management Idiopathic Intracranial Hypertension, And Understanding The Role Of Dural Venous Sinus Stenting. Eye Brain 2020; 12:1-13. [PMID: 32021528 PMCID: PMC6969694 DOI: 10.2147/eb.s193027] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Accepted: 11/05/2019] [Indexed: 12/12/2022] Open
Abstract
Idiopathic Intracranial Hypertension (IIH) is a debilitating disorder characterised by raised intracranial pressure (ICP), papilloedema with the potential risk of permanent visual loss, and headaches that are profoundly disabling and reduce the quality of life. The first consensus guidelines have been published on investigation and management of adult IIH and one key area of uncertainty is the utility of dural venous sinus stenting for the management of headache and visual loss. There are an increasing number of series published and to help understand the successes and complications. During a patient physician priority setting, the understanding of the best type of intervention to treat IIH was assigned to the top 10 of most desired research questions for the disease. Ultimately randomised clinical trials (RCTs) in neurovascular stenting for IIH would be instructive, as the literature to date may suffer from publication bias. Due to the increasing incidence of IIH, there is no better time to systematically investigate interventions that may reverse the disease process and achieve remission. In this review we discuss the pathophysiology of IIH in relation to venous sinus stenosis, the role of venous sinus stenting with a review of the relevant literature, the advantages and disadvantages of stenting compared with other surgical interventions, and the future of stenting in the treatment of IIH.
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Affiliation(s)
- Sam P Gurney
- Birmingham Neuro-Ophthalmology, Queen Elizabeth Hospital, University Hospitals Birmingham, BirminghamB15 2WB, UK
| | - Sateesh Ramalingam
- Neuroradiology Department, Queen Elizabeth Hospital, University Hospitals Birmingham, BirminghamB15 2WB, UK
| | - Alan Thomas
- Neuroradiology Department, Queen Elizabeth Hospital, University Hospitals Birmingham, BirminghamB15 2WB, UK
| | - Alex J Sinclair
- Metabolic Neurology, Institute of Metabolism and Systems Research, College of Medical and Dental Sciences, University of Birmingham, BirminghamB15 2TT, UK
- Centre for Endocrinology, Diabetes and Metabolism, Birmingham Health Partners, BirminghamB15 2TH, UK
- Department of Neurology, University Hospitals Birmingham NHS Foundation Trust, Queen Elizabeth Hospital, BirminghamB15 2WB, UK
| | - Susan P Mollan
- Birmingham Neuro-Ophthalmology, Queen Elizabeth Hospital, University Hospitals Birmingham, BirminghamB15 2WB, UK
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23
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Bai C, Xu Y, Zhou D, Ding J, Yang Q, Ding Y, Ji X, Meng R. The comparative analysis of non-thrombotic internal jugular vein stenosis and cerebral venous sinus stenosis. J Thromb Thrombolysis 2019; 48:61-67. [PMID: 30689154 DOI: 10.1007/s11239-019-01820-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Internal jugular vein (IJV) stenosis and cerebral venous sinus (CVS) stenosis belong to cerebral venous outflow insufficiency. This study aimed to analyze the similarities and differences between IJV stenosis and CVS stenosis. Patients with either IJV stenosis or CVS stenosis confirmed by contrast-enhanced magnetic resonance venography between October 2017 and July 2018 were enrolled in this retrospective study. The similarities and differences between IJV stenosis and CVS stenosis on the aspects of clinical and imaging features were compared. A total of 82 eligible patients entered into the final analysis. The similarities of the two subsets of cerebral venous outflow insufficiency mainly included headache, head noises or tinnitus, visual disorders, and sleeping disorders, as well as cloud-like white matter hyperintensity in T2WI and FLAIR sequences of MRI. However, there were differences in between, the ratio of patients with higher intracranial pressure (ICP) was common in CVS stenosis (p < 0.001). Namely, higher ratios of papilledema (p = 0.001) and visual damage (p = 0.029), as well as poor Frisen papilledema grade scores were more commonly observed in CVS stenosis (p = 0.004), while abnormal collateral-vessels appeared more frequently in IJV stenosis (100.00%) than CVS stenosis (28.57%). Continuous head noises, tinnitus and cloud-like white matter hyperintensity in MRI are the features of both IJV stenosis and CVS stenosis. Whereas, severe headache, visual damage, papilledema, and intracranial hypertension (IH) were more common in CVS stenosis, and the appearance of collateral-vessels is a key feature of IJV stenosis.
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Affiliation(s)
- Chaobo Bai
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, China
- Advanced Center of Stroke, Beijing Institute for Brain Disorders, Beijing, China
- Department of China-America Institute of Neuroscience, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Yaoming Xu
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, China
- Advanced Center of Stroke, Beijing Institute for Brain Disorders, Beijing, China
- Department of China-America Institute of Neuroscience, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Da Zhou
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, China
- Advanced Center of Stroke, Beijing Institute for Brain Disorders, Beijing, China
- Department of China-America Institute of Neuroscience, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Jiayue Ding
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, China
- Advanced Center of Stroke, Beijing Institute for Brain Disorders, Beijing, China
- Department of China-America Institute of Neuroscience, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Qi Yang
- Department of Radiology, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Yuchuan Ding
- Department of China-America Institute of Neuroscience, Xuanwu Hospital, Capital Medical University, Beijing, China
- Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, USA
| | - Xunming Ji
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China
- Advanced Center of Stroke, Beijing Institute for Brain Disorders, Beijing, China
- Department of China-America Institute of Neuroscience, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Ran Meng
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, China.
- Advanced Center of Stroke, Beijing Institute for Brain Disorders, Beijing, China.
- Department of China-America Institute of Neuroscience, Xuanwu Hospital, Capital Medical University, Beijing, China.
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24
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Giridharan N, Patel SK, Ojugbeli A, Nouri A, Shirani P, Grossman AW, Cheng J, Zuccarello M, Prestigiacomo CJ. Understanding the complex pathophysiology of idiopathic intracranial hypertension and the evolving role of venous sinus stenting: a comprehensive review of the literature. Neurosurg Focus 2019; 45:E10. [PMID: 29961379 DOI: 10.3171/2018.4.focus18100] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Idiopathic intracranial hypertension (IIH) is a disease defined by elevated intracranial pressure without established etiology. Although there is now consensus on the definition of the disorder, its complex pathophysiology remains elusive. The most common clinical symptoms of IIH include headache and visual complaints. Many current theories regarding the etiology of IIH focus on increased secretion or decreased absorption of cerebrospinal fluid (CSF) and on cerebral venous outflow obstruction due to venous sinus stenosis. In addition, it has been postulated that obesity plays a role, given its prevalence in this population of patients. Several treatments, including optic nerve sheath fenestration, CSF diversion with ventriculoperitoneal or lumboperitoneal shunts, and more recently venous sinus stenting, have been described for medically refractory IIH. Despite the availability of these treatments, no guidelines or standard management algorithms exist for the treatment of this disorder. In this paper, the authors provide a review of the literature on IIH, its clinical presentation, pathophysiology, and evidence supporting treatment strategies, with a specific focus on the role of venous sinus stenting.
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Affiliation(s)
| | | | | | | | - Peyman Shirani
- Departments of1Neurosurgery and.,2Neurology, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Aaron W Grossman
- Departments of1Neurosurgery and.,2Neurology, University of Cincinnati College of Medicine, Cincinnati, Ohio
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Quan T, Ren Y, Lin Y, Guan S, Hou H, Yan B, Cheng J, Xu H. Role of contrast-enhanced magnetic resonance high-resolution variable flip angle turbo-spin-echo (T1 SPACE) technique in diagnosis of transverse sinus stenosis. Eur J Radiol 2019; 120:108644. [PMID: 31539793 DOI: 10.1016/j.ejrad.2019.108644] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2019] [Revised: 07/16/2019] [Accepted: 08/28/2019] [Indexed: 11/27/2022]
Abstract
PURPOSE Transverse sinus stenosis (TSS) is the most sensitive imaging characteristic of idiopathic intracranial hypertension (IIH). This study aimed to assess the diagnostic performance of contrast-enhanced magnetic resonance high-resolution variable flip angle turbo-spin-echo (T1 SPACE) technique in TSS patients and evaluate the diagnostic accuracy of enhanced T1 SPACE, and phase-contrast magnetic resonance venography (PC MRV) with digital subtraction angiography (DSA) as standard imaging. METHOD This prospective study enrolled 62 patients with suspected IIH and PC MRV-confirmed transverse sinus stenosis. All patients underwent lumbar puncture, PC MRV, enhanced T1 SPACE sequences and DSA examination. The accuracy, sensitivity, and specificity of enhanced T1 SPACE in detecting venous sinus stenosis were calculated and compared with those of PC MRV. Intermodality agreement (Kendall's rank correlation coefficients and weighted kappa statistic) was assessed. RESULTS Sixty-two patients were enrolled from November 2016 to October 2018. For the measured stenosis, better correlation was observed in enhanced T1 SPACE and DSA (AUC = 0.953) than PC MRV (AUC = 0.871). Intermodality agreement of enhanced T1 SPACE (rk = 0.895 and weighted ĸ = 0.868) was better than PC MRV (rk = 0.753 and weighted ĸ = 0.653) compared with DSA. Thirty-seven intrasinus filling defects were detected by contrast-enhanced T1 SPACE, while only twenty of them were detected on source imaging of PC MRV. CONCLUSIONS The contrast-enhanced T1 SPACE sequence was more sensitive and specific compared with PC MRV in assessing stenosis and detecting lesions in TSS patients. Accurate determination of the presence and extent of TSS using this technique might be useful in patient selection and guiding the treatment.
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Affiliation(s)
- Tao Quan
- Department of Interventional Neuroradiology, the First Affiliated Hospital of Zhengzhou University, 1st of Jianshe Road, Zhengzhou, Henan, China
| | - Yanan Ren
- Department of Magnetic Resonance, the First Affiliated Hospital of Zhengzhou University, 1st of Jianshe Road, Zhengzhou, Henan, China
| | - Yanan Lin
- Department of Magnetic Resonance, the First Affiliated Hospital of Zhengzhou University, 1st of Jianshe Road, Zhengzhou, Henan, China
| | - Sheng Guan
- Department of Interventional Neuroradiology, the First Affiliated Hospital of Zhengzhou University, 1st of Jianshe Road, Zhengzhou, Henan, China
| | - Haiman Hou
- Department of Neurology, the First Affiliated Hospital of Zhengzhou University, 1st of Jianshe Road, Zhengzhou, Henan, China
| | - Baojun Yan
- Department of Interventional Neuroradiology, the First Affiliated Hospital of Zhengzhou University, 1st of Jianshe Road, Zhengzhou, Henan, China
| | - Jingliang Cheng
- Department of Magnetic Resonance, the First Affiliated Hospital of Zhengzhou University, 1st of Jianshe Road, Zhengzhou, Henan, China.
| | - Haowen Xu
- Department of Interventional Neuroradiology, the First Affiliated Hospital of Zhengzhou University, 1st of Jianshe Road, Zhengzhou, Henan, China.
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26
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Al-Mufti F, Dodson V, Amuluru K, Walia J, Wajswol E, Nuoman R, Keller IA, Schonfeld S, Roychowdhury S, Gupta G. Neuroendovascular Cerebral Sinus Stenting in Idiopathic Intracranial Hypertension. INTERVENTIONAL NEUROLOGY 2019; 8:164-171. [PMID: 32508898 DOI: 10.1159/000500051] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2018] [Accepted: 03/28/2019] [Indexed: 12/18/2022]
Abstract
Idiopathic intracranial hypertension (IIH) is a rare, ill-understood disease of significant morbidity. Because the pathophysiology is poorly understood, treatment protocols are not uniform and are directed towards alleviating the most common symptoms: headache and visual loss. In this review, we analyze 25 case series, all of which included IIH patients (n = 408) who were treated with placement of a venous sinus stent. Among 342 patients who had headache, 240 patients (70.2%) had improvement or resolution of headache after the stent insertion. Of the 217 patients documented to have visual problems, visual acuity was improved or stabilized in 161 patients (74.2%). Of the 304 patients with papilledema, 257 showed resolution or improved (84.5%). Of the 124 patients who presented with pulsatile tinnitus, it was resolved in 110 patients (88.7%) after stent placement. Endovascular management of dural sinus stenosis is therefore clinically efficacious in patients with IIH who have failed medical and surgical therapy.
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Affiliation(s)
- Fawaz Al-Mufti
- Department of Neurosurgery, Westchester Medical Center at New York Medical College, Valhalla, New York, USA.,Department of Neurology, Robert Wood Johnson Medical School, Rutgers University, New Brunswick, New Jersey, USA.,Department of Neurosurgery, New Jersey Medical School, Rutgers University, Newark, New Jersey, USA
| | - Vincent Dodson
- Department of Neurosurgery, New Jersey Medical School, Rutgers University, Newark, New Jersey, USA
| | - Krishna Amuluru
- Department of Neurosurgery, New Jersey Medical School, Rutgers University, Newark, New Jersey, USA.,Department of Neurointerventional Radiology, University of Pittsburgh, Hamot, Erie, Pennsylvania, USA
| | - Jessy Walia
- Department of Neurology, New Jersey Medical School, Rutgers University, Newark, New Jersey, USA
| | - Ethan Wajswol
- Department of Neurosurgery, New Jersey Medical School, Rutgers University, Newark, New Jersey, USA
| | - Rolla Nuoman
- Department of Neurology, New Jersey Medical School, Rutgers University, Newark, New Jersey, USA
| | - Irwin A Keller
- Department of Radiology, Robert Wood Johnson Medical School, Rutgers University, New Brunswick, New Jersey, USA
| | - Steven Schonfeld
- Department of Radiology, Robert Wood Johnson Medical School, Rutgers University, New Brunswick, New Jersey, USA
| | - Sudipta Roychowdhury
- Department of Radiology, Robert Wood Johnson Medical School, Rutgers University, New Brunswick, New Jersey, USA
| | - Gaurav Gupta
- Department of Neurosurgery, Robert Wood Johnson Medical School, Rutgers University, New Brunswick, New Jersey, USA
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27
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Su H, Li B, Wang J, Tian C, Cao X, Du Z, Liu X, Liu R, Yu S. Headache attributed to cranial venous sinus stenting: A case series and literature review. Cephalalgia 2019; 39:1277-1283. [PMID: 31067080 DOI: 10.1177/0333102419847752] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Background The diagnostic criteria for headache attributable to cranial venous sinus stenting were first formalized in the recently published third edition of the International Classification of Headache Disorders (ICHD-3). However, the diagnostic criteria for headache caused by cranial venous sinus stenting are based on very few data and the condition is poorly characterized. Objectives To validate the diagnostic criteria for cranial venous sinus stenting headache by retrospectively studying the characteristics of headache in patients with isolated pulsatile tinnitus who underwent curative cranial venous sinus stenting and who had not previously complained of headache. Patients and methods We retrospectively studied clinical, radiological, and manometric data from patients with isolated venous pulsatile tinnitus who had not previously reported headache. All patients underwent lateral sinus stenting in our institution between October 2010 and February 2018. Results Forty eight patients, 47 females and one male, were enrolled. The mean age at symptom onset was 36.2 ± 8.7 years and the mean body mass index was 24.0 ± 3.2 kg/m2. Lateral sinus stenosis was evident in 47 patients and a sigmoid diverticulum in one. Fourteen patients experienced headaches after recovering from general anesthesia. All were female, with a mean age of 35.5 ± 9.6 years. Headache persisted for less than 3 days in six patients (42.8%); for 3 days to 3 months in four (28.6%); and for longer than 3 months in four (28.6%). The headaches were located on the same sides as the cranial venous sinus stents in 13 patients (92.9%) and were principally occipital, being oppressive in nine patients (64.3%) and of moderate intensity in seven (50%). Age at onset of pulsatile tinnitus and body mass index were significantly associated with headache ( p < 0.05; t-test). Conclusion To the best of our knowledge, this is the first study to describe cranial venous sinus stenting headache in detail. We found that de novo headache developed after cranial venous sinus stenting, and was usually mild to moderate, unilateral, but oppressive; almost one-third of such headaches persisted for more than 3 months. Researchers and clinicians must become familiar with this headache spectrum; further prospective studies are required.
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Affiliation(s)
- Hui Su
- Department of Neurology, Chinese PLA General Hospital, Beijing, China
| | - Baomin Li
- Department of Neurology, Chinese PLA General Hospital, Beijing, China
| | - Jun Wang
- Department of Neurology, Chinese PLA General Hospital, Beijing, China
| | - Chenglin Tian
- Department of Neurology, Chinese PLA General Hospital, Beijing, China
| | - Xiangyu Cao
- Department of Neurology, Chinese PLA General Hospital, Beijing, China
| | - Zhihua Du
- Department of Neurology, Chinese PLA General Hospital, Beijing, China
| | - Xinfeng Liu
- Department of Neurology, Chinese PLA General Hospital, Beijing, China
| | - Ruozhuo Liu
- Department of Neurology, Chinese PLA General Hospital, Beijing, China
| | - Shengyuan Yu
- Department of Neurology, Chinese PLA General Hospital, Beijing, China
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Morisaki Y, Nakagawa I, Omoto K, Wada T, Kichikawa K, Nakase H. Endovascular treatment of idiopathic intracranial hypertension caused by multiple venous sinus stenoses. Surg Neurol Int 2019; 10:47. [PMID: 31528385 PMCID: PMC6743697 DOI: 10.25259/sni-94-2019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Accepted: 01/02/2019] [Indexed: 11/05/2022] Open
Abstract
Background: Idiopathic intracranial hypertension (IIH) shows symptoms by elevating intracranial pressure. Although sinus stenosis has been detected in many patients with IIH, the role of sinus stenosis in IIH remains obscure. Endovascular treatment for IIH due to transverse sinus stenosis has been frequently documented; however, IIH due to multiple sinus stenoses including the superior sagittal sinus (SSS) is rare. Here, we report a case of IIH due to multiple sinus stenoses treated by sinus stenting. Case Presentation: A 47-year-old woman suffered from intractable headache with IIH presented with stenosis of the right transverse and SSS. Stent placement was carried out since intracranial hypertension and trans-stenotic cerebral venous pressure gradient (CVPG) were presented, and her intractable headache disappeared. Conclusion: IIH can be caused by venous sinus stenoses and stent placement could be an appropriate treatment in patients who demonstrated a CVPG.
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Affiliation(s)
- Yudai Morisaki
- Department of Neurosurgery, Nara Medical University, Nara Prefecture, Japan
| | - Ichiro Nakagawa
- Department of Neurosurgery, Nara Medical University, Nara Prefecture, Japan
| | - Koji Omoto
- Department of Neurosurgery, Nara Medical University, Nara Prefecture, Japan
| | - Takeshi Wada
- Department of Radiology, Nara Medical University, Nara Prefecture, Japan
| | - Kimihiko Kichikawa
- Department of Radiology, Nara Medical University, Nara Prefecture, Japan
| | - Hiroyuki Nakase
- Department of Neurosurgery, Nara Medical University, Nara Prefecture, Japan
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McDougall CM, Ban VS, Beecher J, Pride L, Welch BG. Fifty shades of gradients: does the pressure gradient in venous sinus stenting for idiopathic intracranial hypertension matter? A systematic review. J Neurosurg 2019; 130:999-1005. [PMID: 29498569 DOI: 10.3171/2017.8.jns17459] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2017] [Accepted: 08/21/2017] [Indexed: 11/06/2022]
Abstract
OBJECTIVE The role of venous sinus stenting (VSS) for idiopathic intracranial hypertension (IIH) is not well understood. The aim of this systematic review is to attempt to identify subsets of patients with IIH who will benefit from VSS based on the pressure gradients of their venous sinus stenosis. METHODS MEDLINE/PubMed was searched for studies reporting venous pressure gradients across the stenotic segment of the venous sinus, pre- and post-stent pressure gradients, and clinical outcomes after VSS. Findings are reported according to the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines. RESULTS From 32 eligible studies, a total of 186 patients were included in the analysis. Patients who had favorable outcomes had higher mean pressure gradients (22.8 ± 11.5 mm Hg vs 17.4 ± 8.0 mm Hg, p = 0.033) and higher changes in pressure gradients after stent placement (19.4 ± 10.0 mm Hg vs 12.0 ± 6.0 mm Hg, p = 0.006) compared with those with unfavorable outcomes. The post-stent pressure gradients between the 2 groups were not significantly different (2.8 ± 4.0 mm Hg vs 2.7 ± 2.0 mm Hg, p = 0.934). In a multivariate stepwise logistic regression controlling for age, sex, body mass index, CSF opening pressure, pre-stent pressure gradient, and post-stent pressure gradient, the change in pressure gradient with stent placement was found to be an independent predictor of favorable outcome (p = 0.028). Using a pressure gradient of 21 as a cutoff, 81/86 (94.2%) of patients with a gradient > 21 achieved favorable outcomes, compared with 82/100 (82.0%) of patients with a gradient ≤ 21 (p = 0.022). CONCLUSIONS There appears to be a relationship between the pressure gradient of venous sinus stenosis and the success of VSS in IIH. A randomized controlled trial would help elucidate this relationship and potentially guide patient selection.
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Affiliation(s)
- Cameron M McDougall
- Departments of1Radiology and
- 2Neurosurgery, University of Texas Southwestern, Dallas, Texas
| | - Vin Shen Ban
- 2Neurosurgery, University of Texas Southwestern, Dallas, Texas
| | - Jeffrey Beecher
- 2Neurosurgery, University of Texas Southwestern, Dallas, Texas
| | | | - Babu G Welch
- Departments of1Radiology and
- 2Neurosurgery, University of Texas Southwestern, Dallas, Texas
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30
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Hayman MW, Paleologos MS, Kam PCA. Interventional Neuroradiological Procedures—A Review for Anaesthetists. Anaesth Intensive Care 2019; 41:184-201. [DOI: 10.1177/0310057x1304100208] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- M. W. Hayman
- Department of Anaesthetics, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
- Visiting Specialist Anaesthestist
| | - M. S. Paleologos
- Department of Anaesthetics, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
- Staff Specialist Anaesthetist, Director of Services
| | - P. C. A. Kam
- Department of Anaesthetics, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
- Nuffield Professor and Head, Departments of Anaesthetics, University of Sydney and Royal Prince Alfred Hospital
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31
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Dinkin M, Kesler A. Venous Stenting for Idiopathic Intracranial Hypertension. Neuroophthalmology 2019. [DOI: 10.1007/978-3-319-98455-1_7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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32
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Miyachi S, Hiramatsu R, Ohnishi H, Takahashi K, Kuroiwa T. Endovascular Treatment of Idiopathic Intracranial Hypertension with Stenting of the Transverse Sinus Stenosis. Neurointervention 2018; 13:138-143. [PMID: 30196687 PMCID: PMC6132029 DOI: 10.5469/neuroint.2018.00990] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Accepted: 07/23/2018] [Indexed: 11/29/2022] Open
Abstract
For many years, the pathophysiology of idiopathic intracranial hypertension (IIH) was interpreted as “secondary intracranial hypertension,” and IIH was considered to be caused by brain edema due to obstructive sleep apnea. Another theory proposed cerebrospinal fluid (CSF) absorption impairment due to excessive medication with vitamin A derivatives. Other reports pointed out the importance of obesity, which may cause an impairment of intracranial venous drainage due to elevated right atrial pressure. Patients with medically refractory IIH have traditionally undergone a CSF diversion. Venous outlet impairment on IIH has recently been reported as a causative or contributory cause, and thus focused venoplasty of the stenotic sinus with a stent has emerged as a new treatment strategy. We report the cases of two patients who presented with headache and papilledema with IIH. They successfully underwent stent placement at the stenosis of the transverse sinus and experienced complete resolution of symptoms.
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Affiliation(s)
- Shigeru Miyachi
- Department of Neuroendovascular Therapy Center, Aichi Medical University, Nagakute, Japan
| | - Ryo Hiramatsu
- Department of Neurosurgery and Endovascular Therapy, Osaka Medical College, Takatsuki, Japan
| | - Hiroyuki Ohnishi
- Department of Neurosurgery, Ohnishi Neurosurgical Hospital, Akashi, Japan
| | - Kenkichi Takahashi
- Department of Neurosurgery, Ohnishi Neurosurgical Hospital, Akashi, Japan
| | - Toshihiko Kuroiwa
- Department of Neurosurgery and Endovascular Therapy, Osaka Medical College, Takatsuki, Japan
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Shields LBE, Shields CB, Yao TL, Plato BM, Zhang YP, Dashti SR. Endovascular Treatment for Venous Sinus Stenosis in Idiopathic Intracranial Hypertension: An Observational Study of Clinical Indications, Surgical Technique, and Long-Term Outcomes. World Neurosurg 2018; 121:e165-e171. [PMID: 30248468 DOI: 10.1016/j.wneu.2018.09.070] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Revised: 09/08/2018] [Accepted: 09/11/2018] [Indexed: 12/20/2022]
Abstract
BACKGROUND Idiopathic intracranial hypertension (IIH) is characterized by increased intracranial pressure. IIH causes significant morbidity marked by incapacitating headaches and visual disturbances. This study investigated the long-term outcomes of venous sinus stenting in a large group of patients with IIH. METHODS We retrospectively reviewed all patients at our institution who underwent venous sinus stenting for IIH over 6 years (July 1, 2012-June 30, 2018). A particular focus was dedicated to collecting demographic, clinical, radiologic, and outcomes data. All patients had failed medical management. RESULTS Of the 110 patients evaluated for IIH, 42 underwent venous sinus stenting, with a mean follow-up of 25.6 months (range, 8.7-60.7 months). The mean age was 32 years (range, 15-52 years), 38 (90%) were women, and the mean body mass index was 35.6 kg/m2 (range, 18.6-47.5 kg/m2). Prior to the stenting procedure, all patients had headaches, visual disturbances, and papilledema. Of the 39 patients who had an ophthalmologic evaluation poststenting, 29 (74%) had resolution of their papilledema. Eighteen patients (43%) had complete resolution of their headaches after the stenting procedure, whereas 22 patients (52%) remained under a neurologist's care for chronic migraine and other types of headaches. Two patients underwent a restenting procedure for disease progression, and 1 patient experienced an in-stent thrombosis. CONCLUSIONS A multidisciplinary approach involving neurosurgeons, ophthalmologists, radiologists, and neurologists is integral in the management of patients with IIH to prevent the complications of papilledema. Venous sinus stenting offers a safe and effective means of treating IIH.
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Affiliation(s)
- Lisa B E Shields
- Norton Neuroscience Institute, Norton Healthcare, Louisville, Kentucky, USA
| | - Christopher B Shields
- Norton Neuroscience Institute, Norton Healthcare, Louisville, Kentucky, USA; Department of Neurological Surgery, University of Louisville, Louisville, Kentucky, USA
| | - Tom L Yao
- Norton Neuroscience Institute, Norton Healthcare, Louisville, Kentucky, USA
| | - Brian M Plato
- Norton Neuroscience Institute, Norton Healthcare, Louisville, Kentucky, USA
| | - Yi Ping Zhang
- Norton Neuroscience Institute, Norton Healthcare, Louisville, Kentucky, USA
| | - Shervin R Dashti
- Norton Neuroscience Institute, Norton Healthcare, Louisville, Kentucky, USA.
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Leishangthem L, SirDeshpande P, Dua D, Satti SR. Dural venous sinus stenting for idiopathic intracranial hypertension: An updated review. J Neuroradiol 2018; 46:148-154. [PMID: 30219337 DOI: 10.1016/j.neurad.2018.09.001] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2018] [Revised: 08/12/2018] [Accepted: 09/04/2018] [Indexed: 11/18/2022]
Abstract
BACKGROUND Dural venous sinus stenting (DVSS) is an accepted treatment option in selected patients with medically refractory idiopathic intracranial hypertension and obstructive venous outflow physiology prior to cerebrospinal flow diversion (CSFD) surgery. There are no randomized controlled studies focusing on outcomes and complication rates for dural venous sinus stenting. PURPOSE We present the largest comprehensive meta-analysis on DVSS for idiopathic intracranial hypertension (IIH) focusing on success rates, complications, and re-stenting rates to date. We also present a simplified approach to direct retrograde internal jugular vein (IJ) access for DVSS that allows for expedited procedures. MATERIALS AND METHODS We performed a retrospective electronic PubMed query of all peer-reviewed articles in the last 15 years between 2003 to 2018. We included all patients who underwent dural venous sinus stenting for a medically refractive IIH and excluded articles without sufficient data on outcomes, complication rates and re-stenting rates. We also evaluated and compared outcomes in patients undergoing direct retrograde IJ access DVSS to traditional transfemoral vein access. RESULTS A total of 29 papers and 410 patients who underwent DVSS met criteria for inclusion. DVSS was associated with high technical success [99.5%], low rates of repeated procedure [10%], and low major complication rates [1.5%]. CONCLUSION Our retrospective comprehensive review of DVSS for medically refractory IIH suggests that stenting in appropriately chosen patients is associated with low complication rates, high technical success, and low repeat procedure rates.
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Affiliation(s)
- Lakshmi Leishangthem
- Department of Neurology, Albert Einstein medical center, 5401 Old York Road, 19141 Philadelphia, PA, USA.
| | - Pooja SirDeshpande
- Department of Neurosurgery, University of Louisville, 220 Abraham Flexner Way, Louisville, KY 40202, USA.
| | - Dharti Dua
- Department of Neurology, Ohio State University, Columbus, OH, USA.
| | - Sudhakar R Satti
- Department of Neuro Interventional Surgery, Christiana Care Hospital, Newark, Delaware, USA.
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Nicholson P, Brinjikji W, Radovanovic I, Hilditch CA, Tsang ACO, Krings T, Mendes Pereira V, Lenck S. Venous sinus stenting for idiopathic intracranial hypertension: a systematic review and meta-analysis. J Neurointerv Surg 2018; 11:380-385. [DOI: 10.1136/neurintsurg-2018-014172] [Citation(s) in RCA: 86] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Revised: 08/01/2018] [Accepted: 08/03/2018] [Indexed: 11/03/2022]
Abstract
BackgroundStenting of the intracranial venous sinuses is used as a treatment in certain cases of idiopathic intracranial hypertension (IIH). Interest in, and experience of, this technique is growing, particularly in recent years. We sought to provide an updated systematic review and meta-analysis of the use of venous stenting in these patients, examining clinical outcomes.MethodsA literature search of venous stenting in IIH patients was performed. Using random-effects meta-analysis, we evaluated the following outcomes: clinical resolution of papilledema; headaches and pulsatile tinnitus; recurrence of symptoms after stenting; and complications.ResultsTwenty articles from 18 different centers were included. In a total of 474 patients. 418 were female (88%). The mean age of the patients was 35, while the mean body mass index (BMI) was 35 kg/m2. Median follow-up was 18 months. The overall rate of improvement in papilloedema was 93.7% (95% CI 90.5% to 96.9%), while the overall rate of improvement or resolution of headache was 79.6% (95% CI 73.3% to 85.9%). Pulsatile tinnitus resolved in 90.3% (95% CI 83.8% to 96.70%), while the overall rate of recurrence of IIH symptoms after stenting was 9.8% (95% CI 6.7% to 13%). The rate of major complications was 1.9% (95% CI 0.07% to 3.1%).ConclusionsVenous sinus stenting in patients with IIH who are refractory to medical therapy appears to have an excellent safety profile and is associated with significant improvements in headaches, pulsatile tinnitus, and papilledema.
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36
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Saber H, Lewis W, Sadeghi M, Rajah G, Narayanan S. Stent Survival and Stent-Adjacent Stenosis Rates following Venous Sinus Stenting for Idiopathic Intracranial Hypertension: A Systematic Review and Meta-Analysis. INTERVENTIONAL NEUROLOGY 2018; 7:490-500. [PMID: 30410529 DOI: 10.1159/000490578] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Accepted: 06/02/2018] [Indexed: 11/19/2022]
Abstract
Background Idiopathic intracranial hypertension (IIH) is characterized by an elevated intracranial pressure without any identifiable causative factor such as an intracranial mass. Dural venous sinus stenosis (DVSS) has been suggested to be associated with IIH. Objective We performed an updated systematic review and meta-analysis to determine clinical outcomes as well as stent survival and stent-adjacent stenosis rates in patients undergoing DVSS for the management of medically refractory IIH. Methods We searched PubMed, Embase, and Cochrane databases to identify prospective or retrospective cohorts or case series of patients with IIH treated with DVSS between 2000 and 2017. Results A total of 473 patients were included from 24 studies. Headache was present in 429 (91.8%) patients and resolved or improved in 319/413 (77.2%) after the procedure. Headache, papilledema, visual acuity, and tinnitus improved in 256/330 (77.6%), 247/288 (85.8%), 121/172 (70.3%), and 93/110 (84.5%) patients following DVSS at the final follow-up (mean of 18.3 months). In a meta-analysis of 395 patients with available follow-up data on stenting outcome (mean of 18.9 months), the stent survival and stent-adjacent stenosis rates were 84% (95% confidence interval [CI] 79-87%) and 14% (95% CI 11-18%), respectively. The rate of major neurological complications was less than 2%. Conclusion Stent-adjacent stenosis is an important complication following venous stenting in patients with DVSS and IIH. Further studies are needed to identify determinants of stent-adjacent stenosis and stent nonsurvival.
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Affiliation(s)
- Hamidreza Saber
- Department of Neurology, Wayne State University School of Medicine, Detroit, Michigan, USA
| | - Whitfield Lewis
- Department of Neurology, Wayne State University School of Medicine, Detroit, Michigan, USA
| | - Mahsa Sadeghi
- Department of Neurology, Wayne State University School of Medicine, Detroit, Michigan, USA
| | - Gary Rajah
- Department of Neurosurgery, Wayne State University School of Medicine, Detroit, Michigan, USA
| | - Sandra Narayanan
- Department of Neurology, Wayne State University School of Medicine, Detroit, Michigan, USA.,Department of Neurosurgery, Wayne State University School of Medicine, Detroit, Michigan, USA
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Fargen KM, Liu K, Garner RM, Greeneway GP, Wolfe SQ, Crowley RW. Recommendations for the selection and treatment of patients with idiopathic intracranial hypertension for venous sinus stenting. J Neurointerv Surg 2018; 10:1203-1208. [PMID: 30030306 DOI: 10.1136/neurintsurg-2018-014042] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Revised: 06/04/2018] [Accepted: 06/06/2018] [Indexed: 11/03/2022]
Abstract
INTRODUCTION Although venous sinus stenting (VSS) has emerged as a promising treatment option for patients with idiopathic intracranial hypertension (IIH) and associated venous sinus stenosis, there is considerable ambiguity regarding patient selection criteria, treatment protocols, and management strategies. METHODS An extensive literature review was performed to identify all reports of VSS in patients with IIH using PubMed. Recommendations for the selection and treatment of patients with IIH with VSS are outlined as determined based on author opinion from supporting studies. Due to the lack of randomized trials and few published prospective studies, standard grading scales for recommendations and level of evidence are not fully applicable and therefore a revised grading scale has been provided for recommendations. RESULTS The literature review identified a total of eight systematic reviews or meta-analyses and 29 published patient series on VSS. Recommendations for patient selection for diagnostic catheter angiography, angiography procedural considerations, stenting procedural considerations, and retreatment are provided based on the literature. Recommendations that were considered strong included: performance of venous sinus manometry to assess candidacy for treatment prior to stenting; administration of antiplatelet agents prior to stenting and for a follow-up period of at least 3-6 months; performance of post-stenting manometry to confirm resolution of pressure gradient; and performance of repeat angiography and manometry on patients with recurrence of symptoms after resolution with stenting to evaluate for recurrent stenosis. CONCLUSION VSS for patients with IIH with venous sinus stenosis is now an established and effective treatment option. These recommendations have been provided, based on a summative review of the available published literature, to assist in standardizing care for patients with IIH undergoing VSS.
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Affiliation(s)
- Kyle M Fargen
- Department of Neurological Surgery, Wake Forest University School of Medicine, Winston-Salem, North Carolina, USA
| | - Kenneth Liu
- Department of Neurosurgery, Penn State College of Medicine, Hershey, Pennsylvania, USA
| | - Rebecca M Garner
- Department of Neurological Surgery, Wake Forest University School of Medicine, Winston-Salem, North Carolina, USA
| | - Garret P Greeneway
- Department of Neurological Surgery, Wake Forest University School of Medicine, Winston-Salem, North Carolina, USA
| | - Stacey Q Wolfe
- Department of Neurological Surgery, Wake Forest University School of Medicine, Winston-Salem, North Carolina, USA
| | - R Webster Crowley
- Department of Neurosurgery, Rush Medical College, Chicago, Illinois, USA
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Patsalides A, Oliveira C, Wilcox J, Brown K, Grover K, Gobin YP, Dinkin MJ. Venous sinus stenting lowers the intracranial pressure in patients with idiopathic intracranial hypertension. J Neurointerv Surg 2018; 11:175-178. [PMID: 29871989 PMCID: PMC6582809 DOI: 10.1136/neurintsurg-2018-014032] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Accepted: 05/10/2018] [Indexed: 11/03/2022]
Abstract
AIMS We report the cerebrospinal fluid opening pressure (CSF-OP) measurements obtained before and after venous sinus stenting (VSS) in 50 patients with idiopathic intracranial hypertension. METHODS The CSF-OP was measured with a spinal tap 3 months before and 3 months after treatment. All data were prospectively collected and included patient demographics, weight (kg), body mass index (BMI), acetazolamide daily dosage (mg), procedural details, complications, venous sinus pressures (mm Hg), trans-stenotic pressure gradient (mm Hg), transverse sinus symmetry, and type of venous sinus stenosis. RESULTS The average pretreatment CSF-OP was 37 cm H2O (range 25-77) and the average post-treatment CSF-OP was 20.2 cm H2O (range 10-36), with an average reduction of 16.8 cm H2O (P<0.01). The post-treatment CSF-OP was less than 25 cm H2O in 40/50 patients. The average acetazolamide daily dose decreased from 950 mg to 300 mg at the time of 3-month follow-up (P<0.01). No patient required an increase in acetazolamide dose 3 months after VSS. The average weight before treatment was 95.4 kg with an average BMI of 35.41. There was an average increase in body weight of 1.1 kg at the 3-month follow-up with an average increase in BMI of 0.35 (P=0.03). CONCLUSIONS We provide evidence that there is a significant decrease in CSF-OP in patients with idiopathic intracranial hypertension 3 months after VSS, independent of acetazolamide usage or weight loss.
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Affiliation(s)
- Athos Patsalides
- Division of Interventional Neuroradiology, Department of Neurological Surgery, Weill Cornell Medine, New York, USA
| | - Cristiano Oliveira
- Department of Neurology, Weill Cornell Medicine, New York, USA.,Department of Ophthalmology, Weill Cornell Medicine, New York, USA
| | - Jessica Wilcox
- Department of Neurology, Weill Cornell Medicine, New York, USA
| | - Kenroy Brown
- Division of Interventional Neuroradiology, Department of Neurological Surgery, Weill Cornell Medine, New York, USA
| | - Kartikey Grover
- Department of Medical Statistics, Weill Cornell Medicine, New York, USA
| | - Yves Pierre Gobin
- Division of Interventional Neuroradiology, Department of Neurological Surgery, Weill Cornell Medine, New York, USA
| | - Marc J Dinkin
- Department of Neurology, Weill Cornell Medicine, New York, USA.,Department of Ophthalmology, Weill Cornell Medicine, New York, USA
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Abstract
PURPOSE OF REVIEW This review presents a critical appraisal of current therapeutic strategies for patients with idiopathic intracranial hypertension (IIH). We present the reader with the most recent evidence to support medical and surgical interventions in patients with IIH and provide recommendations about treatment initiation and escalation. We also indicate areas where knowledge gaps exist regarding therapeutic efficacy and superiority of one intervention over another. RECENT FINDINGS A double-masked, randomized prospective study of medical management of patients with mild IIH (Idiopathic Intracranial Hypertension Treatment Trial-IIHTT) has established that acetazolamide therapy has additional efficacy when compared to weight loss alone. Furthermore, management of IIH-related headache, even in patients with papilledema, may require treatment other than ICP lowering for patients to experience symptomatic relief. Finally, a number of uncontrolled interventional studies have shown transverse sinus stenting to be a potentially effective treatment for medically refractory IIH. Medical therapy with acetazolamide should be considered in addition to structured weight loss in patients with mild IIH. Surgical treatment for patients with vision-threatening disease IIH can be performed by either optic nerve sheath fenestration or cerebrospinal fluid diversion, with venous sinus stenting emerging as an alternate therapy. Headache relief from ICP lowering therapy is variable and often not sustained.
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Affiliation(s)
- Sivashakthi Kanagalingam
- Department of Surgery, Division of Ophthalmology, Dartmouth-Hitchcock Medical Center, Lebanon, NH, USA
| | - Prem S Subramanian
- Department of Ophthalmology, School of Medicine, University of Colorado Anschutz Medical Campus, 1675 Aurora Court, Mailstop F-731, Aurora, CO, 80045, USA.
- Department of Neurology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA.
- Department of Neurosurgery, University of Colorado Anschutz Medical Campus, Aurora, CO, USA.
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Boddu SR, Gobin P, Oliveira C, Dinkin M, Patsalides A. Contrast enhanced magnetic resonance venography in the follow-up evaluation of idiopathic intracranial hypertension patients with cerebral venous sinus stenting. Clin Imaging 2018; 50:330-335. [PMID: 29754068 DOI: 10.1016/j.clinimag.2018.04.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Revised: 04/05/2018] [Accepted: 04/16/2018] [Indexed: 10/17/2022]
Abstract
PURPOSE Role of contrast-enhanced magnetic resonance venography (CE-MRV) in the follow-up of venous sinus stenting (VSS) among the idiopathic intracranial hypertension (IIH) patients. MATERIALS AND METHODS Prospective evaluation of VSS patients with CE-MRV, DRCV and DSA for follow-up of clinically suspected recurrent stenosis. CE-MRV was evaluated against DRCV and DSA. RESULTS Ten patients with twelve episodes of recurrent symptoms. Sensitivity, specificity, PPV, NPV and accuracy of the CE-MRV for the detection of recurrent stenosis were: 100%, 33.33%, 81.82%, 100% and 83.3% respectively. CONCLUSION CE-MRV was a reliable first-line investigation for the detection of recurrent stenosis following VSS.
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Affiliation(s)
- Srikanth R Boddu
- Division of Interventional Neuroradiology, Department of Neurological Surgery, New York Presbyterian Hospital/Weill Cornell Medical Center, 525 East, 68th Street, New York, NY 10065, United States; Interventional Neuroradiology, New York Presbyterian Queens Hospital, Flushing, NY 11355, United States.
| | - Pierre Gobin
- Division of Interventional Neuroradiology, Department of Neurological Surgery, New York Presbyterian Hospital/Weill Cornell Medical Center, 525 East, 68th Street, New York, NY 10065, United States.
| | - Cristiano Oliveira
- Department of Ophthalmology, New York Presbyterian Hospital, Weill Cornell Medical College, New York, NY 10021, United States.
| | - Marc Dinkin
- Department of Ophthalmology, New York Presbyterian Hospital, Weill Cornell Medical College, New York, NY 10021, United States.
| | - Athos Patsalides
- Division of Interventional Neuroradiology, Department of Neurological Surgery, New York Presbyterian Hospital/Weill Cornell Medical Center, 525 East, 68th Street, New York, NY 10065, United States.
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Juhász J, Lindner T, Riedel C, Margraf NG, Jansen O, Rohr A. Quantitative Phase-Contrast MR Angiography to Measure Hemodynamic Changes in Idiopathic Intracranial Hypertension. AJNR Am J Neuroradiol 2018. [PMID: 29519787 DOI: 10.3174/ajnr.a5571] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
BACKGROUND AND PURPOSE Idiopathic intracranial hypertension is a syndrome of raised intracranial pressure of unknown etiology. Few MR imaging-based studies have investigated arterial and venous blood flow in these patients. Results are inconclusive, and to our knowledge, no comparison of the hemodynamic parameters before and after CSF pressure reduction has been published. The aim of this study was to assess the short-term effects of normalizing CSF pressure on intracranial flow to better understand the pathophysiology of idiopathic intracranial hypertension. MATERIALS AND METHODS In this study, we performed quantitative MR imaging-derived flow measurements of brain-supplying arteries and draining veins/dural sinuses to visualize hemodynamic changes in patients with idiopathic intracranial hypertension before and after therapy by lumbar puncture in comparison with a healthy control group. RESULTS We found differences in patients before and after lumbar puncture in the calculated resistance and pulsatility indices in the superior sagittal sinus. Venous pulsatility showed a negative correlation with CSF pressure in untreated patients. Additionally, there was a trend toward lower flow in the superior sagittal sinus in patients compared with healthy controls. Flow in the internal jugular veins was significantly reduced by lumbar puncture, and the resistance and pulsatility indices differed in patients and controls. The arterial flow was not influenced by pressure normalization. CONCLUSIONS The results of the present study indicate that venous but not arterial blood flow differs in patients compared with controls and that calculating resistance and pulsatility indices may contribute to assessing short-term hemodynamic changes in patients with diagnosed idiopathic intracranial hypertension before and after CSF diversion.
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Affiliation(s)
- J Juhász
- From the Clinic for Radiology and Neuroradiology (J.J., T.L., C.R., O.J., A.R.)
| | - T Lindner
- From the Clinic for Radiology and Neuroradiology (J.J., T.L., C.R., O.J., A.R.)
| | - C Riedel
- From the Clinic for Radiology and Neuroradiology (J.J., T.L., C.R., O.J., A.R.)
| | - N G Margraf
- Clinic for Neurology (N.G.M.), University Hospital Schleswig-Holstein Campus Kiel, Kiel, Germany
| | - O Jansen
- From the Clinic for Radiology and Neuroradiology (J.J., T.L., C.R., O.J., A.R.)
| | - A Rohr
- From the Clinic for Radiology and Neuroradiology (J.J., T.L., C.R., O.J., A.R.).,Neuroradiology Section (A.R.), Vancouver General Hospital, Vancouver, British Columbia, Canada
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Lenck S, Vallée F, Labeyrie MA, Touitou V, Saint-Maurice JP, Guillonnet A, Tantot A, Crassard I, Bernat AL, Houdart E. Stenting of the Lateral Sinus in Idiopathic Intracranial Hypertension According to the Type of Stenosis. Neurosurgery 2017; 80:393-400. [PMID: 27218234 DOI: 10.1227/neu.0000000000001261] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Accepted: 02/28/2016] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Over the past decade, stenting of lateral sinus stenosis has been used to treat idiopathic intracranial hypertension. Two types of stenoses have been identified: extrinsic and intrinsic. OBJECTIVE The aim of this study was to report the results of our use of this procedure to treat patients with extrinsic or intrinsic stenoses in idiopathic intracranial hypertension. METHODS We retrospectively studied clinical, radiological, and manometric data from patients with idiopathic intracranial hypertension who were treated at our institution between January 2009 and January 2015 by stenting of the lateral sinus. RESULTS Data were studied from 19 women and 2 men. Average body mass index was 29 kg/m 2 , and the median age at stenting was 33 years. Patients with extrinsic stenoses were younger than those with intrinsic stenoses. Transstenotic gradients measured with patients under general anesthesia were lower than those measured with patients under local anesthesia. In all cases, stenting was effective for papilledema and pulsatile tinnitus. Seventeen patients reporting headaches found that they disappeared completely after stenting. Two complications without long-term effects were reported. CONCLUSION Irrespective of the type of stenosis, stenting of lateral sinus stenoses is an effective treatment for intracranial hypertension symptoms. At our institution, this treatment has replaced draining of cerebrospinal fluid when treatment with acetazolamide has proved to be ineffective.
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Affiliation(s)
| | - Fabrice Vallée
- Anes-thesiology and Critical Care, Hôpital Lariboisière, Paris, France
| | | | - Valérie Touitou
- Department of Ophthalmology, Groupe Hospitalier Pitié Salpêtrière, Paris, France
| | | | | | - Audrey Tantot
- Anes-thesiology and Critical Care, Hôpital Lariboisière, Paris, France
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Young CC, Morton RP, Ghodke BV, Levitt MR. Retrograde 3D rotational venography (3DRV) for venous sinus stent placement in idiopathic intracranial hypertension. J Neurointerv Surg 2017; 10:777-779. [DOI: 10.1136/neurintsurg-2017-013533] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Revised: 11/07/2017] [Accepted: 11/07/2017] [Indexed: 11/04/2022]
Abstract
BackgroundDural venous sinus stenting has emerged as an effective and durable treatment for idiopathic intracranial hypertension (IIH). Improved visualization of the venous sinuses can improve stent placement.MethodsWe present two cases of IIH treated with venous sinus stenting in which retrograde three-dimensional rotational venography (3DRV) provided superior anatomical details of the venous sinuses for optimal sizing and positioning of stent.ResultsComparison of pre-stent 3DRV with post-stent contrast-enhanced flat panel detector CT allowed confirmation of stent placement and the result of stenosis dilation.ConclusionThis 3DRV technique provides precise visualization of venous sinus stenosis prior to stenting without the need for arterial cerebral angiography during the treatment course.
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Hoffmann J. Impaired cerebrospinal fluid pressure. HANDBOOK OF CLINICAL NEUROLOGY 2017; 146:171-185. [PMID: 29110769 DOI: 10.1016/b978-0-12-804279-3.00011-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Abstract
Abnormalities of cerebrospinal fluid (CSF) pressure are relatively common and may lead to a variety of symptoms, with headache usually being the most prominent one. The clinical presentation of alterations in CSF pressure may vary significantly and show a striking similitude to several primary headache syndromes. While an increase in CSF pressure may be of primary or secondary origin, a pathologic decrease of CSF pressure is usually the result of a meningeal rupture with a resulting leakage of CSF. The pathophysiologic mechanisms of idiopathic intracranial hypertension (IIH) remain largely unknown. However recent evidence indicates that an abnormality in CSF outflow and absorption is likely to play a significant role. Treatment usually consists of a combination of weight loss and a pharmacologic approach using carbonic anhydrase inhibitors. Recent results of the first randomized, double-blind, placebo-controlled trial (RCT) with acetazolamide proved its efficacy in reducing headache and visual disturbances. Clinical evidence suggests efficacy for topiramate and furosemide but no RCT has been conducted to date to confirm these results. In contrast to IIH, spontaneous intracranial hypotension frequently remits spontaneously without specific treatment. If necessary, treatment options range from conservative methods to epidural blood or fibrin sealant patches and surgical interventions.
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Affiliation(s)
- Jan Hoffmann
- Department of Systems Neuroscience, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
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Lansley JA, Tucker W, Eriksen MR, Riordan-Eva P, Connor SEJ. Sigmoid Sinus Diverticulum, Dehiscence, and Venous Sinus Stenosis: Potential Causes of Pulsatile Tinnitus in Patients with Idiopathic Intracranial Hypertension? AJNR Am J Neuroradiol 2017; 38:1783-1788. [PMID: 28705815 DOI: 10.3174/ajnr.a5277] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Accepted: 04/29/2017] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Pulsatile tinnitus is experienced by most patients with idiopathic intracranial hypertension. The pathophysiology remains uncertain; however, transverse sinus stenosis and sigmoid sinus diverticulum/dehiscence have been proposed as potential etiologies. We aimed to determine whether the prevalence of transverse sinus stenosis and sigmoid sinus diverticulum/dehiscence was increased in patients with idiopathic intracranial hypertension and pulsatile tinnitus relative to those without pulsatile tinnitus and a control group. MATERIALS AND METHODS CT vascular studies of patients with idiopathic intracranial hypertension with pulsatile tinnitus (n = 42), without pulsatile tinnitus (n = 37), and controls (n = 75) were independently reviewed for the presence of severe transverse sinus stenosis and sigmoid sinus diverticulum/dehiscence according to published criteria. The prevalence of transverse sinus stenosis and sigmoid sinus diverticulum/dehiscence in patients with idiopathic intracranial hypertension with pulsatile tinnitus was compared with that in the nonpulsatile tinnitus idiopathic intracranial hypertension group and the control group. Further comparisons included differing degrees of transverse sinus stenosis (50% and 75%), laterality of transverse sinus stenosis/sigmoid sinus diverticulum/dehiscence, and ipsilateral transverse sinus stenosis combined with sigmoid sinus diverticulum/dehiscence. RESULTS Severe bilateral transverse sinus stenoses were more frequent in patients with idiopathic intracranial hypertension than in controls (P < .001), but there was no significant association between transverse sinus stenosis and pulsatile tinnitus within the idiopathic intracranial hypertension group. Sigmoid sinus dehiscence (right- or left-sided) was also more common in patients with idiopathic intracranial hypertension compared with controls (P = .01), but there was no significant association with pulsatile tinnitus within the idiopathic intracranial hypertension group. CONCLUSIONS While our data corroborate previous studies demonstrating increased prevalence of sigmoid sinus diverticulum/dehiscence and transverse sinus stenosis in idiopathic intracranial hypertension, we did not establish an increased prevalence in patients with idiopathic intracranial hypertension with pulsatile tinnitus compared with those without. It is therefore unlikely that these entities represent a direct structural correlate of pulsatile tinnitus in patients with idiopathic intracranial hypertension.
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Affiliation(s)
- J A Lansley
- From the Barts Health National Health Service Trust (J.A.L.), London, UK
| | - W Tucker
- King's College Hospital (W.T., M.R.E., P.R.-E., S.E.J.C.), Denmark Hill, London, UK
| | - M R Eriksen
- King's College Hospital (W.T., M.R.E., P.R.-E., S.E.J.C.), Denmark Hill, London, UK.,Aleris Roentgen Institutte Stavanger (M.R.E.), Stavanger, Norway
| | - P Riordan-Eva
- King's College Hospital (W.T., M.R.E., P.R.-E., S.E.J.C.), Denmark Hill, London, UK
| | - S E J Connor
- King's College Hospital (W.T., M.R.E., P.R.-E., S.E.J.C.), Denmark Hill, London, UK.,Guy's and St Thomas' Hospital (S.E.J.C.), London, UK
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Raper D, Buell TJ, Ding D, Chen CJ, Starke RM, Liu KC. Pattern of pressure gradient alterations after venous sinus stenting for idiopathic intracranial hypertension predicts stent-adjacent stenosis: a proposed classification system. J Neurointerv Surg 2017. [DOI: 10.1136/neurintsurg-2017-013135] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
ObjectiveVenous sinus stenting (VSS) is a safe and effective treatment for idiopathic intracranial hypertension (IIH) with angiographic venous sinus stenosis. However, predictors of stent-adjacent stenosis (SAS) remain poorly defined.MethodsWe performed a retrospective review of 47 patients with IIH and intracranial venous stenosis who underwent VSS with pre- and post-stent venography. Patient characteristics, treatments and outcomes were reviewed. Changes in pressure gradient after VSS were classified according to pattern of gradient resolution into types I–III.ResultsType I gradient resolution, in which mean venous pressure (MVP) in the transverse sinus (TS) decreases towards MVP in the sigmoid sinus (SS), occurred in 18 patients (38.3%). Type II gradient resolution pattern, in which SS MVP increases towards that in the TS, occurred in 7patients (14.9%). Type III pattern, in which MVP equilibrates to a middle value, occurred in 22patients (46.8%). SAS occurred in 0%, 28.6%, and 22.7% of patients in types I, II and III, respectively. Compared with patients with type I gradient resolution, SAS was more common in those with type II (p=0.0181) and type III (p=0.0306) patterns.ConclusionsThe pattern of change in the trans-stenosis venous pressure gradient may be predictive of SAS and is a useful tool for classifying the response of the venous obstruction to stenting. A type I pattern appears to represent the ideal response to VSS. Some patients with type II and III changes, particularly if they have other predictors of recurrent stenosis, may benefit from longer initial stent constructs.
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Venous Sinus Stenting in Idiopathic Intracranial Hypertension: Results of a Prospective Trial. J Neuroophthalmol 2017; 37:113-121. [PMID: 27556959 DOI: 10.1097/wno.0000000000000426] [Citation(s) in RCA: 79] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Effect of Body Mass Index on Venous Sinus Pressures in Idiopathic Intracranial Hypertension Patients Before and After Endovascular Stenting. Neurosurgery 2017; 82:555-561. [DOI: 10.1093/neuros/nyx186] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2016] [Accepted: 03/16/2017] [Indexed: 02/02/2023] Open
Abstract
Abstract
BACKGROUND
Elevated body mass index (BMI) has been correlated with worse outcomes after treatment for idiopathic intracranial hypertension (IIH). Venous sinus stenting (VSS) has emerged as a safe and effective treatment for a subset of patients with IIH and evidence of venous sinus stenosis. However, the association between BMI and the efficacy of VSS remains poorly characterized.
OBJECTIVE
To determine, in a retrospective cohort study, the effect of BMI on preoperative mean intracranial venous pressure (MVP) and post-VSS outcomes.
METHODS
We performed a retrospective evaluation of a prospectively collected database of patients with IIH and intracranial venous sinus stenosis who underwent VSS. Patient demographics and treatment factors, including pre- and postprocedural trans-stenosis pressure gradients, were analyzed to identify the relationship between BMI and outcomes after VSS.
RESULTS
Increasing BMI was significantly correlated with higher maximum MVP (P = .013) and higher trans-stenosis pressure gradient (P = .043) prior to treatment. The degrees of improvement in maximum MVP and pressure gradient after VSS were greatest for obese and morbidly obese patients (BMI > 30 kg/m2). Maximum poststent MVP, clinical outcomes, and stent-adjacent stenosis requiring retreatment after VSS were not significantly associated with BMI.
CONCLUSION
We provide direct evidence for a positive correlation between BMI and intracranial venous pressure in patients with IIH. VSS affords a significantly greater amelioration of intracranial venous hypertension and stenosis for IIH patients with higher BMIs. As such, obesity should not be a deterrent for the use of VSS in the management of IIH.
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Raper DMS, Buell TJ, Chen CJ, Ding D, Starke RM, Liu KC. Intracranial venous pressures under conscious sedation and general anesthesia. J Neurointerv Surg 2017; 9:986-989. [PMID: 28360352 DOI: 10.1136/neurintsurg-2017-012984] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2017] [Revised: 02/25/2017] [Accepted: 02/28/2017] [Indexed: 11/03/2022]
Abstract
IntroductionVenous outflow obstruction has been implicated in the pathophysiology of a subset of patients with idiopathic intracranial hypertension (IIH), and venous sinus stenting (VSS) has emerged as an effective treatment. However, the effect of anesthesia on venous sinus pressure measurements is unpredictable. A more thorough understanding of the effect of the level of anesthesia on intracranial venous pressures might help to better define patients who might benefit most from stent placement.ObjectiveTo compare, in a retrospective cohort study, intracranial venous pressures measured under conscious (CS) sedation versus general anesthesia (GA) and to assess the relationship between anesthetic-dependent venous pressures and outcomes after VSS.MethodsWe performed a retrospective review of a prospectively maintained database to identify patients undergoing angiographic evaluation and VSS for intracranial venous stenosis. Mean venous pressures (MVPs) and trans-stenosis pressure gradients obtained under CS were compared with those measured under GA.ResultsThe maximal MVP was significantly lower under GA (19.8 mm Hg) than CS (21.9 mm Hg; p=0.029). The MVPs in the superior sagittal sinus, torcula, and transverse sinus were lower under GA, but were significantly higher in the sigmoid sinus and jugular bulb under GA (p<0.001). The mean trans-stenosis pressure gradient was also significantly lower under GA (8.6 mm Hg) than CS (12.1 mm Hg; p<0.001). Patients with a larger difference between maximum MVP under GA versus CS were more likely to have normalization of the MVP after VSS (p=0.0008).ConclusionsIntracranial venous pressures are markedly affected by GA. In order to obtain an accurate measurement of MVPs and trans-stenosis gradients, patients undergoing investigation for IIH should undergo cerebral angiography and venous manometry under CS, which provides more reliable data for outcomes after VSS.
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Affiliation(s)
- Daniel M S Raper
- Department of Neurosurgery, University of Virginia Health System, Charlottesville, Virginia, USA
| | - Thomas J Buell
- Department of Neurosurgery, University of Virginia Health System, Charlottesville, Virginia, USA
| | - Ching-Jen Chen
- Department of Neurosurgery, University of Virginia Health System, Charlottesville, Virginia, USA
| | - Dale Ding
- Department of Neurosurgery, University of Virginia Health System, Charlottesville, Virginia, USA
| | - Robert M Starke
- Deparment of Neurological Surgery, Miller School of Medicine, University of Miami, Miami, Florida, USA
| | - Kenneth C Liu
- Department of Neurosurgery, University of Virginia Health System, Charlottesville, Virginia, USA
- Department of Radiology, University of Virginia Health System, Charlottesville, Virginia, USA
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50
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Endovascular treatment of idiopathic intracranial hypertension: retrospective analysis of immediate and long-term results in 51 patients. Neuroradiology 2017; 59:277-287. [DOI: 10.1007/s00234-017-1783-5] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Accepted: 01/04/2017] [Indexed: 10/20/2022]
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