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https://www.readbyqxmd.com/read/29786470/direct-cortical-stimulation-of-inferior-frontal-cortex-disrupts-both-speech-and-music-production-in-highly-trained-musicians
#1
Matthew K Leonard, Maansi Desai, Dylan Hungate, Ruofan Cai, Nilika S Singhal, Robert C Knowlton, Edward F Chang
Music and speech are human-specific behaviours that share numerous properties, including the fine motor skills required to produce them. Given these similarities, previous work has suggested that music and speech may at least partially share neural substrates. To date, much of this work has focused on perception, and has not investigated the neural basis of production, particularly in trained musicians. Here, we report two rare cases of musicians undergoing neurosurgical procedures, where it was possible to directly stimulate the left hemisphere cortex during speech and piano/guitar music production tasks...
May 22, 2018: Cognitive Neuropsychology
https://www.readbyqxmd.com/read/29784284/routine-surveillance-imaging-following-mild-traumatic-brain-injury-with-intracranial-hemorrhage-may-not-be-necessary
#2
Smruti K Patel, Yair M Gozal, Bryan M Krueger, James C Bayley, Suzanne Moody, Norberto Andaluz, Richard A Falcone, Karin S Bierbrauer
BACKGROUND: Mild traumatic brain injury (mTBI) comprises the majority of pediatric traumatic brain injury. Children with mTBI even with traumatic intracranial hemorrhage (tICH) rarely experience a clinically significant neurologic decline (CSND). The utility of routine surveillance imaging in the pediatric population also remains controversial, especially owing to concerns about the risks of radiation exposure at a young age. This study aims to identify demographic or injury-related characteristics that may facilitate recognition of children at risk of progression with mTBI...
April 27, 2018: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/29783859/impact-of-early-versus-late-intravenous-followed-by-oral-nimodipine-treatment-on-the-occurrence-of-delayed-cerebral-ischemia-among-patients-with-aneurysm-subarachnoid-hemorrhage
#3
Tipada Samseethong, Thanarat Suansanae, Kullapat Veerasarn, Anusak Liengudom, Chuthamanee Suthisisang
BACKGROUND: Guidelines for aneurysm subarachnoid hemorrhage (aSAH) management recommend treatment with nimodipine to all patients to reduce delayed cerebral ischemia (DCI) and poor clinical outcome. However, it did not give the most beneficial time to start therapy and route of administration. OBJECTIVES: To compare the DCI occurrence and clinical outcome among aSAH patients who received nimodipine treatment at different times. METHODS: A retrospective cohort study was conducted by collecting data from medical chart reviews between August 30, 2010, and October 31, 2015, at Prasart Neurological Institute, Thailand...
May 1, 2018: Annals of Pharmacotherapy
https://www.readbyqxmd.com/read/29783125/contralateral-functional-reorganization-of-the-speech-supplementary-motor-area-following-neurosurgical-tumor-resection
#4
Srinivas Chivukula, Brian K Pikul, Keith L Black, Nader Pouratian, Susan Y Bookheimer
We evaluated plasticity in speech supplemental motor area (SMA) tissue in two patients using functional magnetic resonance imaging (fMRI), following resection of tumors in or associated with the dominant hemisphere speech SMA. Patient A underwent resection of a anaplastic astrocytoma NOS associated with the left speech SMA, experienced SMA syndrome related mutism postoperatively, but experienced full recovery 14 months later. FMRI performed 32 months after surgery demonstrated a migration of speech SMA to homologous contralateral hemispheric regional tissue...
May 18, 2018: Brain and Language
https://www.readbyqxmd.com/read/29782617/patient-specific-neurosurgical-phantom-assessment-of-visual-quality-accuracy-and-scaling-effects
#5
Felipe Wilker Grillo, Victor Hugo Souza, Renan Hiroshi Matsuda, Carlo Rondinoni, Theo Zeferino Pavan, Oswaldo Baffa, Helio Rubens Machado, Antonio Adilton Oliveira Carneiro
Background: Training in medical education depends on the availability of standardized materials that can reliably mimic the human anatomy and physiology. One alternative to using cadavers or animal bodies is to employ phantoms or mimicking devices. Styrene-ethylene/butylene-styrene (SEBS) gels are biologically inert and present tunable properties, including mechanical properties that resemble the soft tissue. Therefore, SEBS is an alternative to develop a patient-specific phantom, that provides real visual and morphological experience during simulation-based neurosurgical training...
2018: 3D printing in medicine
https://www.readbyqxmd.com/read/29782609/low-cost-customized-cranioplasty-using-a-3d-digital-printing-model-a-case-report
#6
Abel De La Peña, Javier De La Peña-Brambila, Juan Pérez-De La Torre, Miguel Ochoa, Guillermo J Gallardo
Background: Cranial defects usually occur after trauma, neurosurgical procedures like decompressive craniotomy, tumour resections, infection and congenital defects. The purpose of cranial vault repair is to protect the underlying brain tissue, to reduce any localized pain and patient anxiety, and improve cranial aesthetics. Cranioplasty is a frequent neurosurgical procedure achieved with the aid of cranial prosthesis made from materials such as: titanium, autologous bone, ceramics and polymers...
2018: 3D printing in medicine
https://www.readbyqxmd.com/read/29779186/mastoid-foramen-mastoid-emissary-vein-and-clinical-implications-in-neurosurgery
#7
Martin Hampl, David Kachlik, Katerina Kikalova, Roxane Riemer, Matej Halaj, Vlastimil Novak, Premysl Stejskal, Miroslav Vaverka, Lumir Hrabalek, David Krahulik, Ondrej Nanka
BACKGROUND: Mastoid emissary vein is especially important from the neurosurgical point of view, because it is located in variable number in the area of the occipitomastoid suture and it can become a source of significant bleeding in surgical approaches through the mastoid process, especially in retrosigmoid craniotomy, which is used for approaches to pathologies localized in the cerebellopontine angle. Ideal imaging method for diagnosis of these neglected structures when planning a surgical approach is high-resolution computed tomography...
May 20, 2018: Acta Neurochirurgica
https://www.readbyqxmd.com/read/29778601/diagnosis-classification-and-management-of-fourth-ventriculomegaly-in-adults-report-of-9-cases-and-literature-review
#8
Kaveh Barami, Indro Chakrabarti, James Silverthorn, Jeremy Ciporen, Paul T Akins
OBJECTIVE: An enlarged fourth ventricle otherwise known as fourth ventriculomegaly (4th VM) has been previously reported in the pediatric population yet literature on adults is scant. We report our experience with 4th VM in adults over an 11 year period and review the literature. MATERIAL/METHODS: retrospective chart review of adult patients with the diagnosis of 4th VM admitted to the ICU in a tertiary care center RESULTS: 9 patients were identified with 4th VM...
May 17, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29778276/dissociable-frontostriatal-connectivity-mechanism-and-predictor-of-the-clinical-efficacy-of-capsulotomy-in-obsessive-compulsive-disorder
#9
Dazhi Yin, ChenCheng Zhang, Qiming Lv, Xiaoyu Chen, Kristina Zeljic, Hengfen Gong, Shikun Zhan, Haiyan Jin, Zheng Wang, Bomin Sun
BACKGROUND: Little is known about the neural mechanism and response variability underlying neurosurgical interventions for intractable obsessive-compulsive disorder (OCD). METHODS: Of 81 OCD patients screened for capsulotomy identified in our institutional database, 36 patients with clinical assessment before and after capsulotomy and imaging data (9 of 36 patients without postoperative imaging data used as an independent test group), and 29 healthy control subjects were retrospectively recruited...
April 22, 2018: Biological Psychiatry
https://www.readbyqxmd.com/read/29777887/linear-cutting-trepanation-in-italy-a-unique-case-from-hellenistic-sicily-3-rd-century-bc
#10
REVIEW
Giorgia Tulumello, Giulia Riccomi, Simona Minozzi, Sveva Longo, Marcello Longo, Valentina Giuffra
During the archaeological excavations conducted in the Hellenistic necropolis discovered in Messina (Sicily, Italy) dating back to the 3rd century BC., a skeleton showing evidence of cranial traumas and surgical intervention was found. The skull, belonging to a young adult male, presented signs of four head injuries produced by both blunt and sharp-edged instruments. The first two lesions, located on the frontal bone, were produced by blunt blows and showed signs of long-time survival. The third lesion, located on the inferior portion of the right parietal, suggests a perimortem non-penetrating linear cut probably caused by a blade instrument...
May 16, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29777884/neurosurgical-management-of-self-inflicted-cranial-crossbow-injury
#11
Charles G Kulwin, Andrew DeNardo, Saad Khairi, Troy Payner
BACKGROUND: While gun-related penetrating traumatic brain injuries make up the majority of cranial missile injuries, low-velocity penetrating injuries present significant clinical difficulties that cannot necessarily be identically managed. Bow hunting is an increasingly popular pastime, and a crossbow allows a unique mechanism to cause a self-inflicted cranial injury with a large, low-velocity projectile. Historically, arrow removal is described in an operating room setting, which provides limited knowledge of the location of vascular injury in the setting of post-removal hemorrhage, and may represent an inefficient use of operating room availability...
May 16, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29775154/clinical-and-radiological-outcomes-of-proactive-gamma-knife-surgery-for-asymptomatic-meningiomas-compared-with-the-natural-course-without-intervention
#12
Kyung Hwan Kim, So Jeong Kang, Jung-Won Choi, Doo-Sik Kong, Ho Jun Seol, Do-Hyun Nam, Jung-Il Lee
OBJECTIVE This study aimed to verify the effect of proactive Gamma Knife surgery (GKS) in the treatment of asymptomatic meningioma compared with the natural course without any therapeutic intervention. METHODS From January 2006 to May 2017, 354 patients newly diagnosed with asymptomatic meningioma were reviewed and categorized into GKS (n = 153) and observation (n = 201) groups. Clinical and radiological progression rates were examined, and changes in volume were analyzed. RESULTS Clinical progression (i.e...
May 18, 2018: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29775144/the-economic-consequences-of-neurosurgical-disease-in-low-and-middle-income-countries
#13
Niclas Rudolfson, Michael C Dewan, Kee B Park, Mark G Shrime, John G Meara, Blake C Alkire
OBJECTIVE The objective of this study was to estimate the economic consequences of neurosurgical disease in low- and middle-income countries (LMICs). METHODS The authors estimated gross domestic product (GDP) losses and the broader welfare losses attributable to 5 neurosurgical disease categories in LMICs using two distinct economic models. The value of lost output (VLO) model projects annual GDP losses due to neurosurgical disease during 2015-2030, and is based on the WHO's "Projecting the Economic Cost of Ill-health" tool...
May 18, 2018: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29772402/serious-adverse-events-following-normal-pressure-hydrocephalus-surgery
#14
Vikas Kotagal, Elizabeth Walkowiak, Jason A Heth
OBJECTIVE: Recent Normal Pressure Hydrocephalus (NPH) practice guidelines describe a serious adverse event (SAE) rate following surgery of 11%. PATIENTS & METHODS: We conducted a retrospective review of 162 consecutive patients who have undergone work-up at our center's multidisciplinary NPH clinic over a 47 month time period (2/2014-12/2017). Of these, 22 ultimately underwent neurosurgical ventricular shunt surgery as treatment for NPH. Clinical records were reviewed for SAEs categorized as possibly/probably/definitely related to NPH surgery...
May 14, 2018: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/29772367/patterns-of-clinical-utilization-of-stereotactic-laser-ablation-sla-an-analysis-of-the-multi-center-prospective-registry
#15
Robert C Rennert, Usman Khan, Stephen B Tatter, Melvin Field, Brian Toyota, Peter E Fecci, Kevin Judy, Alireza M Mohammadi, Patrick Landazuri, Andrew Sloan, Eric Leuthardt, Clark C Chen
BACKGROUND: Stereotactic laser ablation (SLA), also termed laser interstitial thermal therapy (LITT), is a minimally invasive procedure that is increasingly utilized in neurosurgery. We wished to examine how/if SLA is changing the landscape of treatment options for neurosurgical patients. METHODS: Patients undergoing stereotactic laser ablation were prospectively enrolled in the Laser Ablation of Abnormal Neurological Tissue (LAANTERN) registry. Data from the first 100 enrolled patients are presented here...
May 14, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29772364/pathophysiology-and-non-surgical-treatment-of-chronic-subdural-hematoma-from-past-to-present-to-future
#16
REVIEW
Dana C Holl, Victor Volovici, Clemens M F Dirven, Wilco C Peul, Fop van Kooten, Korné Jellema, Niels A van der Gaag, Ishita P Miah, Kuan H Kho, Heleen M den Hertog, Hester F Lingsma, Ruben Dammers
BACKGROUND: Chronic subdural hematoma (CSDH) is one of the more frequent pathological entities in daily neurosurgical practice. Historically, CSDH was considered a progressive, recurrent bleeding with a traumatic etiology. However, recent evidence suggests a complex intertwined pathway of inflammation, angiogenesis, local coagulopathy, recurrent microbleeds and exudates. The aim of the present review is to collect existing data on pathophysiology of CSDH in order to direct further research questions aiming to optimize treatment for the individual patient...
May 14, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29770082/first-reported-case-of-multidrug-resistant-candida-auris-in-canada
#17
I S Schwartz, G W Hammond
Candida auris is a fungal pathogen that has recently emerged as a global threat to public health. It was first described in Japan in 2009 and has since been reported in 17 countries on five continents. This case report describes the first reported case of multidrug-resistant C. auris in Canada. In May 2017, a 64-year-old individual was evaluated for chronic otitis externa. Past medical history included a recent hospitalization in India for elective oral surgery that was complicated by an odontogenic brain abscess...
July 6, 2017: Canada Communicable Disease Report, Relevé des Maladies Transmissibles Au Canada
https://www.readbyqxmd.com/read/29768273/subcaudate-tractotomy-white-matter-anatomy-and-variability-a-diffusion-tensor-imaging-study
#18
Kartik D Bhatia, Luke A Henderson, Eugene Hsu, Mark Yim
BACKGROUND: Subcaudate tractotomy is a functional ablative procedure performed for treatment-resistant psychiatric disease, targeting the white matter tracts ventral to the head of the caudate nucleus. The white matter anatomy of this region has extensive interindividual variability, and this is thought to impact upon the treatment response to ablative and deep brain stimulation procedures. OBJECTIVE: We aim to assess in detail the white matter tract anatomy and topographic variability underlying subcaudate tractotomy...
May 16, 2018: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/29767766/cost-transparency-in-neurosurgery-a-single-institution-analysis-of-patient-out-of-pocket-spending-in-13-673-consecutive-neurosurgery-cases
#19
Michael A Mooney, Seungwon Yoon, Tyler Cole, John P Sheehy, Michael A Bohl, F David Barranco, Peter Nakaji, Andrew S Little, Michael T Lawton
BACKGROUND: Patient out-of-pocket (OOP) spending is an increasingly discussed topic; however, there is minimal data available on the patient financial burden of surgical procedures. OBJECTIVE: To analyze hospital and surgeon expected payment data and patient OOP spending in neurosurgery. METHODS: This is a retrospective cohort study of neurosurgical patients at a tertiary-referral center from 2013 to 2016. Expected payments, reflecting negotiated costs-of-care, as well as actual patient OOP payments for hospital care and surgeon professional fees were analyzed...
May 15, 2018: Neurosurgery
https://www.readbyqxmd.com/read/29767763/commentary-impact-of-hospital-and-health-system-mergers-and-acquisitions-on-the-practicing-neurosurgeon-survey-and-analysis-from-the-council-of-state-neurosurgical-societies-medical-director-s-ad-hoc-representative-section
#20
Richard Menger, Brenton Pennicooke, Todd Barnes, Sarah Fouke, Phillip Kissel, Thomas Origitano, Ramin Rak, Edie Zusman, Jeffrey Cozzens, Andrew Grande, Steven Toms, Sharon Webb, Sherry Taylor
No abstract text is available yet for this article.
June 1, 2018: Neurosurgery
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