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Journal of Neurosurgery

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https://www.readbyqxmd.com/read/28799880/a-morphometric-survey-of-the-parasellar-region-in-more-than-2700-skulls-emphasis-on-the-middle-clinoid-process-variants-and-implications-in-endoscopic-and-microsurgical-approaches
#1
Akshay Sharma, Gabrielle E Rieth, Joseph E Tanenbaum, James S Williams, Nakao Ota, Srikant Chakravarthi, Sunil Manjila, Amin Kassam, Bulent Yapicilar
OBJECTIVE The middle clinoid process (MCP) is a bony projection that extends from the sphenoid bone near the lateral margin of the sella turcica. The varied prevalence and morphological features of the MCP in populations stratified by age, race, and sex are unknown; however, the knowledge of its anatomy and preoperative recognition on CT scans can aid greatly in complication avoidance and management. The aim of this study was to further illustrate the surgical anatomy of the parasellar region and to quantify the incidence of MCP and caroticoclinoid rings (CCRs) in dried preserved human anatomical specimens...
August 11, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28799879/the-pathophysiology-of-chronic-noncommunicating-hydrocephalus-lessons-from-continuous-intracranial-pressure-monitoring-and-ventricular-infusion-testing
#2
Per Kristian Eide
OBJECTIVE The pathophysiology of chronic noncommunicating hydrocephalus (ncHC) is poorly understood. This present study explored whether lessons about the pathophysiology of this clinical entity might be retrieved from results of overnight monitoring of pulsatile and static intracranial pressure (ICP) and ventricular infusion testing. METHODS The study cohort included adult patients (> 20 years of age) with chronic ncHC due to aqueductal stenosis in whom symptoms had lasted a minimum of 6 months. A reference cohort consisted of age- and sex-matched patients managed for communicating HC (cHC)...
August 11, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28799878/letter-to-the-editor-microsurgery-for-basilar-apex-aneurysms-in-the-modern-era
#3
Ryan P Morton, Louis J Kim, Laligam N Sekhar
No abstract text is available yet for this article.
August 11, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28799877/volume-of-cerebrospinal-fluid-drainage-as-a-predictor-for-pretreatment-aneurysmal-rebleeding
#4
Jasper H van Lieshout, Ina Pumplün, Igor Fischer, Marcel A Kamp, Jan F Cornelius, Hans J Steiger, Hieronymus D Boogaarts, Athanasios K Petridis, Kerim Beseoglu
OBJECTIVE Initiation of external CSF drainage has been associated with a significant increase in rebleeding probability after aneurysmal subarachnoid hemorrhage (aSAH). However, the implications for acute management are uncertain. The purpose of this study was to evaluate the role of the amount of drained CSF on aneurysmal rebleeding. METHODS Consecutive patients with aSAH were analyzed retrospectively. Radiologically confirmed cases of aneurysmal in-hospital rebleeding were identified and predictor variables for rebleeding were retrieved from hospital records...
August 11, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28799876/melanoma-brain-metastasis-the-impact-of-stereotactic-radiosurgery-braf-mutational-status-and-targeted-and-or-immune-based-therapies-on-treatment-outcome
#5
Rupesh Kotecha, Jacob A Miller, Vyshak A Venur, Alireza M Mohammadi, Samuel T Chao, John H Suh, Gene H Barnett, Erin S Murphy, Pauline Funchain, Jennifer S Yu, Michael A Vogelbaum, Lilyana Angelov, Manmeet S Ahluwalia
OBJECTIVE The goal of this study was to investigate the impact of stereotactic radiosurgery (SRS), BRAF status, and targeted and immune-based therapies on the recurrence patterns and factors associated with overall survival (OS) among patients with melanoma brain metastasis (MBM). METHODS A total of 366 patients were treated for 1336 MBMs; a lesion-based analysis was performed on 793 SRS lesions. The BRAF status was available for 78 patients: 35 had BRAF (mut) and 43 had BRAF wild-type ( BRAF-WT) lesions. The Kaplan-Meier method evaluated unadjusted OS; cumulative incidence analysis determined the incidences of local failure (LF), distant failure, and radiation necrosis (RN), with death as a competing risk...
August 11, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28799875/direct-versus-indirect-bypasses-for-adult-ischemic-type-moyamoya-disease-a-propensity-score-matched-analysis
#6
Xiaofeng Deng, Faliang Gao, Dong Zhang, Yan Zhang, Rong Wang, Shuo Wang, Yong Cao, Yuanli Zhao, Yuesong Pan, Xingju Liu, Qian Zhang, Jizong Zhao
OBJECTIVE The optimal surgical modality for moyamoya disease (MMD) remains unclear. The aim of this study was to compare the surgical effects of direct bypass (DB) and indirect bypass (IB) in the treatment of adult ischemic-type MMD. METHODS Adult patients with ischemic-type MMD who underwent either DB or IB from 2009 to 2015 were identified retrospectively from a prospective database. Patients lost to follow-up or with a follow-up period less than 12 months were excluded. Recurrent stroke events and modified Rankin Scale (mRS) scores at the last follow-up were compared between the 2 surgical groups after 1:1 propensity score matching...
August 11, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28799874/limitations-of-multidetector-computed-tomography-angiography-for-the-diagnosis-of-blunt-cerebrovascular-injury
#7
Ramesh Grandhi, Gregory M Weiner, Nitin Agarwal, David M Panczykowski, William J Ares, Jesse S Rodriguez, Jonathan A Gelfond, John G Myers, Louis H Alarcon, David O Okonkwo, Brian T Jankowitz
OBJECTIVE Blunt cerebrovascular injuries (BCVIs) following trauma carry risk for morbidity and mortality. Since patients with BCVI are often asymptomatic at presentation and neurological sequelae often occur within 72 hours, timely diagnosis is essential. Multidetector CT angiography (CTA) has been shown to be a noninvasive, cost-effective, reliable means of screening; however, the false-positive rate of CTA in diagnosing patients with BCVI represents a key drawback. Therefore, the authors assessed the role of DSA in the screening of BCVI when utilizing CTA as the initial screening modality...
August 11, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28799873/-birdlime-technique-using-tachosil-tissue-sealing-sheet-soaked-with-fibrin-glue-for-sutureless-vessel-transposition-in-microvascular-decompression-operative-technique-and-nuances
#8
Naoki Otani, Terushige Toyooka, Kazuya Fujii, Kosuke Kumagai, Satoru Takeuchi, Arata Tomiyama, Yasuaki Nakao, Takuji Yamamoto, Kojiro Wada, Kentaro Mori
OBJECTIVE Microvascular decompression (MVD) is effective for the treatment of trigeminal neuralgia (TN), hemifacial spasm (HFS), and glossopharyngeal neuralgia. The transposition technique is the standard procedure to avoid adhesions and granuloma around the decompression site but is more complex and difficult to perform than the interposition technique. The authors describe a simple and safe MVD transposition procedure they call the "birdlime" technique, which uses a tissue glue-coated collagen sponge soaked with fibrin glue, and the results of this technique...
August 11, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28799872/neurosurgeon-as-educator-a-review-of-principles-of-adult-education-and-assessment-applied-to-neurosurgery
#9
Randy L Jensen, Gmaan Alzhrani, John R W Kestle, Douglas L Brockmeyer, Sara M Lamb, William T Couldwell
No abstract text is available yet for this article.
August 11, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28799871/letter-to-the-editor-clipping-after-pipeline-embolization-device-placement-for-a-thrombosed-acoa-aneurysm
#10
Mattia Pacetti, Pascal J Mosimann, Jean-Baptiste Zerlauth, Francesco Puccinelli, Marc Levivier, Roy Thomas Daniel
No abstract text is available yet for this article.
August 11, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28799870/vitamin-d-status-and-3-month-glasgow-outcome-scale-scores-in-patients-in-neurocritical-care-prospective-analysis-of-497-patients
#11
Jian Guan, Michael Karsy, Andrea A Brock, Ilyas M Eli, Gabrielle M Manton, Holly K Ledyard, Gregory W J Hawryluk, Min S Park
OBJECTIVE Vitamin D deficiency has been associated with a variety of negative outcomes in critically ill patients, but little focused study on the effects of hypovitaminosis D has been performed in the neurocritical care population. In this study, the authors examined the effect of vitamin D deficiency on 3-month outcomes after discharge from a neurocritical care unit (NCCU). METHODS The authors prospectively analyzed 25-hydroxy vitamin D levels in patients admitted to the NCCU of a quaternary care center over a 6-month period...
August 11, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28799869/predictive-factors-of-medullary-infarction-after-endovascular-internal-trapping-using-coils-for-vertebral-artery-dissecting-aneurysms
#12
Masanori Aihara, Isao Naito, Tatsuya Shimizu, Masahiro Matsumoto, Ken Asakura, Naoko Miyamoto, Yuhei Yoshimoto
OBJECTIVE The first choice of treatment in cases of vertebral artery dissecting aneurysms (VADAs) is endovascular internal trapping (EIT) of the dissecting segment using coils. However, this procedure carries the risk of medullary infarction, and the risk factors for this complication are not well understood. This study investigated the risk factors causing medullary infarction. METHODS One hundred patients who underwent EIT for VADAs were included in this study. Ninety-three patients presented with subarachnoid hemorrhage...
August 11, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28799868/timing-of-cranioplasty-a-10-75-year-single-center-analysis-of-754-patients
#13
Ryan P Morton, Isaac Josh Abecassis, Josiah F Hanson, Jason K Barber, Mimi Chen, Cory M Kelly, John D Nerva, Samuel N Emerson, Chibawanye I Ene, Michael R Levitt, Michelle M Chowdhary, Andrew L Ko, Randall M Chesnut
OBJECTIVE Despite their technical simplicity, cranioplasty procedures carry high reported morbidity rates. The authors here present the largest study to date on complications after cranioplasty, focusing specifically on the relationship between complications and timing of the operation. METHODS The authors retrospectively reviewed all cranioplasty cases performed at Harborview Medical Center over the past 10.75 years. In addition to relevant clinical and demographic characteristics, patient morbidity and mortality data were abstracted from the electronic medical record...
August 11, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28799867/endoscope-assisted-repair-of-csf-otorrhea-and-temporal-lobe-encephaloceles-via-keyhole-craniotomy
#14
Pamela C Roehm, Derrick Tint, Norman Chan, Ryan Brewster, Vishad Sukul, Kadir Erkmen
OBJECTIVE Temporal lobe encephaloceles and cerebrospinal fluid otorrhea from temporal bone defects that involve the tegmen tympani and mastoideum are generally repaired using middle fossa craniotomy, mastoidectomy, or combined approaches. Standard middle fossa craniotomy exposes patients to dural retraction, which can lead to postoperative neurological complications. Endoscopic and minimally invasive techniques have been used in other surgeries to minimize brain retraction, and so these methods were applied to repair the lateral skull base...
August 11, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28784032/evaluation-of-a-novel-noninvasive-icp-monitoring-device-in-patients-undergoing-invasive-icp-monitoring-preliminary-results
#15
Oliver Ganslandt, Stylianos Mourtzoukos, Andreas Stadlbauer, Björn Sommer, Rudolf Rammensee
OBJECTIVE There is no established method of noninvasive intracranial pressure (NI-ICP) monitoring that can serve as an alternative to the gold standards of invasive monitoring with external ventricular drainage or intraparenchymal monitoring. In this study a new method of NI-ICP monitoring performed using algorithms to determine ICP based on acoustic properties of the brain was applied in patients undergoing invasive ICP (I-ICP) monitoring, and the results were analyzed. METHODS In patients with traumatic brain injury and subarachnoid hemorrhage who were undergoing treatment in a neurocritical intensive care unit, the authors recorded ICP using the gold standard method of invasive external ventricular drainage or intraparenchymal monitoring...
August 8, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28777026/letter-to-the-editor-rectus-capitis-lateralis-muscle-anatomical-relationships-in-posterior-and-anterior-approaches-to-the-jugular-foramen
#16
Sukhdeep S Jhawar, Maximiliano Nunez, Paolo Pacca, Daniel Seclen Voscoboinik, Huy Q Truong
No abstract text is available yet for this article.
August 4, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28777025/red-light-excitation-of-protoporphyrin-ix-fluorescence-for-subsurface-tumor-detection
#17
David W Roberts, Jonathan D Olson, Linton T Evans, Kolbein K Kolste, Stephen C Kanick, Xiaoyao Fan, Jaime J Bravo, Brian C Wilson, Frederic Leblond, Mikael Marois, Keith D Paulsen
OBJECTIVE The objective of this study was to detect 5-aminolevulinic acid (ALA)-induced tumor fluorescence from glioma below the surface of the surgical field by using red-light illumination. METHODS To overcome the shallow tissue penetration of blue light, which maximally excites the ALA-induced fluorophore protoporphyrin IX (PpIX) but is also strongly absorbed by hemoglobin and oxyhemoglobin, a system was developed to illuminate the surgical field with red light (620-640 nm) matching a secondary, smaller absorption peak of PpIX and detecting the fluorescence emission through a 650-nm longpass filter...
August 4, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28777024/quantitative-anatomical-comparison-of-the-ipsilateral-and-contralateral-interhemispheric-transcallosal-approaches-to-the-lateral-ventricle
#18
Evgenii Belykh, Kaan Yağmurlu, Ting Lei, Sam Safavi-Abbasi, Mark E Oppenlander, Nikolay L Martirosyan, Vadim A Byvaltsev, Robert F Spetzler, Peter Nakaji, Mark C Preul
OBJECTIVE The best approach to deep-seated lateral and third ventricle lesions is a function of lesion characteristics, location, and relationship to the ventricles. The authors sought to examine and compare angles of attack and surgical freedom of anterior ipsilateral and contralateral interhemispheric transcallosal approaches to the frontal horn of the lateral ventricle using human cadaveric head dissections. Illustrative clinical experiences with a contralateral interhemispheric transcallosal approach and an anterior interhemispheric transcallosal transchoroidal approach are also related...
August 4, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28777023/impact-of-neurosurgeon-specialization-on-patient-outcomes-for-intracranial-and-spinal-surgery-a-retrospective-analysis-of-the-nationwide-inpatient-sample-1998-2009
#19
Brandon A McCutcheon, Brian R Hirshman, Brandon C Gabel, Michael W Heffner, Logan P Marcus, Tyler S Cole, Clark C Chen, David C Chang, Bob S Carter
OBJECTIVE The subspecialization of neurosurgical practice is an ongoing trend in modern neurosurgery. However, it remains unclear whether the degree of surgeon specialization is associated with improved patient outcomes. The authors hypothesized that a trend toward increased neurosurgeon specialization was associated with improved patient morbidity and mortality rates. METHODS The Nationwide Inpatient Sample (NIS) was used (1998-2009). Patients were included in a spinal analysis cohort for instrumented spine surgery involving the cervical spine ( International Classification of Diseases, Ninth Revision, Clinical Modification [ICD-9-CM] codes 81...
August 4, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28777022/association-of-cystathionine-beta-synthase-polymorphisms-and-aneurysmal-subarachnoid-hemorrhage
#20
Philipp Hendrix, Paul M Foreman, Mark R Harrigan, Winfield S Fisher, Nilesh A Vyas, Robert H Lipsky, Mingkuan Lin, Beverly C Walters, R Shane Tubbs, Mohammadali M Shoja, Jean-Francois Pittet, Mali Mathru, Christoph J Griessenauer
OBJECTIVE Cystathionine β-synthase (CBS) is involved in homocysteine and hydrogen sulfide (H2S) metabolism. Both products have been implicated in the pathophysiology of cerebrovascular diseases. The impact of CBS polymorphisms on aneurysmal subarachnoid hemorrhage (aSAH) and its clinical sequelae is poorly understood. METHODS Blood samples from all patients enrolled in the CARAS (Cerebral Aneurysm Renin Angiotensin System) study were used for genetic evaluation. The CARAS study prospectively enrolled aSAH patients at 2 academic institutions in the United States from 2012 to 2015...
August 4, 2017: Journal of Neurosurgery
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