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Neural surgery

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https://www.readbyqxmd.com/read/29351677/use-of-risk-model-for-assessment-of-residents-perception-of-complexity-of-surgical-steps-example-of-modular-component-steps-of-lumbar-spinal-fusion-surgery
#1
Jeffrey S Raskin, Jesse J Liu, Katherine Holste, Sarah Brown, Fran Hardaway, Priscilla Pang, Ahmed M Raslan
BACKGROUND: Quality improvement projects increasingly emphasize standardization of surgical work flow to optimize operative room efficiency. Removing special cause variability resulting from nonsurgical waste is an obvious target; however, resident surgical education must be maintained, even in the setting of process improvement. OBJECTIVE: To describe the impact of resident-identified "risky" or "uncomfortable" procedural steps on operative time during transforaminal lumbar interbody fusion (TLIF)...
February 1, 2018: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29351671/a-novel-non-invasive-method-for-evaluating-electroencephalograms-on-laying-hens
#2
Krista N Eberle, Michael P Martin, Sanjay Shah, Ramon D Malheiros, Kimberly A Livingston, Kenneth E Anderson
The use of electroencephalograms (EEG) to study the avian brain relative to behavior was conducted as early as the 1960's. EEG readings, combined with visual cues, provide the ability to elucidate and correlate behaviors to neurological and physiological changes in a chicken. The use of EEG recordings in animal models require access to the brain to implant electrodes. Having the ability to observe EEG activity on sensible birds without surgical implantation could broaden the research in this area and give further insight related to the hen's state of awareness...
January 17, 2018: Poultry Science
https://www.readbyqxmd.com/read/29345503/effectiveness-of-the-biophysical-barriers-to-the-peridural-fibrosis-in-rat-laminectomy-model
#3
Ibrahim Akkurt, Bulent Bakar, Gungor Cagdas Dincel, Fatma Azize Budak Yıldıran, Mustafa Ogden, Egemen Nursoy, Elif Sari
PURPOSE: Peridural fibrosis which could occur after the spinal surgery could adhere neural tissue closely and may cause to neural entrapment symptoms and require surgical reintervention. AIM OF THE STUDY: Present study was designed to reduce occurrence of peridural fibrosis in rat laminectomy model by using biophysical barriers called hyaluronic acid (HAS) dural barrier, activated polyethylene glycol and polyethylene imine (PEG) dural barrier, and platelet-rich plasma (PRP)...
January 18, 2018: Journal of Investigative Surgery: the Official Journal of the Academy of Surgical Research
https://www.readbyqxmd.com/read/29342050/intraoperative-cochlear-implant-device-testing-utilizing-an-automated-remote-system-a-prospective-pilot-study
#4
Amanda R Lohmann, Matthew L Carlson, Douglas P Sladen
INTRODUCTION: Intraoperative cochlear implant device testing provides valuable information regarding device integrity, electrode position, and may assist with determining initial stimulation settings. Manual intraoperative device testing during cochlear implantation requires the time and expertise of a trained audiologist. The purpose of the current study is to investigate the feasibility of using automated remote intraoperative cochlear implant reverse telemetry testing as an alternative to standard testing...
January 16, 2018: Otology & Neurotology
https://www.readbyqxmd.com/read/29339512/neural-preservation-underlies-speech-improvement-from-auditory-deprivation-in-young-cochlear-implant-recipients
#5
Gangyi Feng, Erin M Ingvalson, Tina M Grieco-Calub, Megan Y Roberts, Maura E Ryan, Patrick Birmingham, Delilah Burrowes, Nancy M Young, Patrick C M Wong
Although cochlear implantation enables some children to attain age-appropriate speech and language development, communicative delays persist in others, and outcomes are quite variable and difficult to predict, even for children implanted early in life. To understand the neurobiological basis of this variability, we used presurgical neural morphological data obtained from MRI of individual pediatric cochlear implant (CI) candidates implanted younger than 3.5 years to predict variability of their speech-perception improvement after surgery...
January 16, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29336785/the-erector-spinae-plane-block-in-4-cases-of-video-assisted-thoracic-surgery
#6
J C Luis-Navarro, M Seda-Guzmán, C Luis-Moreno, J L López-Romero
Multimodal anaesthesia, combining epidural catheter and general anaesthesia, is a common technique in thoracic surgery, however, epidural catheter placement is not always possible. Recently, erector spinae plane block has been described, which provides analgesia like that of the epidural block, although unilateral, and which has been used in various procedures at thoracic level. At present, there are no studies comparing the efficacy or safety of this block with those commonly used in thoracic surgery. However, its safety profile and contraindications seem different from those of the epidural catheter, since its placement is done under ultrasound view, the needle introduction is done in plane and the ultrasound target, the transverse process, is easily identifiable and is relatively remote from major neural or vascular structures and the pleura...
January 11, 2018: Revista Española de Anestesiología y Reanimación
https://www.readbyqxmd.com/read/29333013/comparative-study-of-imprint-cytology-and-histopathology-of-soft-tissue-tumors
#7
Sujit Kumar Dutta, Senjuti Dasgupta, Nirmal Kumar Bhattacharyya, Parul Jain, Debdas Bose, Pranab Kumar Biswas
Background: The components of soft tissue are fibroblasts, collagen, vascular structures, fatty tissue, skeletal muscles, smooth muscles, and neural tissue. The real incidence of soft tissue tumors (STTs) is difficult to estimate because most of them are benign (Benign: Malignant-100:1). Aims: The aim of the present study was undertaken to note the patterns of presentation of patients with STTs and to evaluate the findings of imprint cytology (IC) and histopathological examination (HPE) of STTs...
October 2017: Indian Journal of Medical and Paediatric Oncology
https://www.readbyqxmd.com/read/29332196/bioelectronic-modulation-of-carotid-sinus-nerve-activity-in-the-rat-a-potential-therapeutic-approach-for-type-2-diabetes
#8
Joana F Sacramento, Daniel J Chew, Bernardete F Melo, Matteo Donegá, Wesley Dopson, Maria P Guarino, Alison Robinson, Jesus Prieto-Lloret, Sonal Patel, Bradley J Holinski, Nishan Ramnarain, Victor Pikov, Kristoffer Famm, Silvia V Conde
AIMS/HYPOTHESIS: A new class of treatments termed bioelectronic medicines are now emerging that aim to target individual nerve fibres or specific brain circuits in pathological conditions to repair lost function and reinstate a healthy balance. Carotid sinus nerve (CSN) denervation has been shown to improve glucose homeostasis in insulin-resistant and glucose-intolerant rats; however, these positive effects from surgery appear to diminish over time and are heavily caveated by the severe adverse effects associated with permanent loss of chemosensory function...
January 14, 2018: Diabetologia
https://www.readbyqxmd.com/read/29332078/magnetic-resonance-guided-high-intensity-focused-ultrasound-for-treating-movement-disorders
#9
Young Goo Kim, Eun Jung Kweon, Won Seok Chang, Hyun Ho Jung, Jin Woo Chang
Transcranial magnetic resonance-guided focused ultrasound (MRgFUS) surgery has recently gained favor as a novel, noninvasive alternative to conventional neurosurgery. In contrast to traditional ablative interventions, transcranial MRgFUS surgery is entirely imaging-guided and uses continuous temperature measurements at the target and surrounding tissue taken in real-time. Unlike Gamma Knife radiosurgery, MRgFUS surgery can make a lesion immediately and does not use ionizing radiation. Moreover, since no metallic device is implanted, MR imaging-based diagnosis is not restricted throughout life...
2018: Progress in Neurological Surgery
https://www.readbyqxmd.com/read/29330874/safety-of-high-current-stimulation-for-intermittent-intraoperative-neural-monitoring-in-thyroid-surgery-a-porcine-model
#10
I-Cheng Lu, Pi-Ying Chang, Gregory W Randolph, Hsiu-Ya Chen, Kuang-Yi Tseng, Yi-Chu Lin, Feng-Yu Chiang, Che-Wei Wu
OBJECTIVES: During monitored thyroidectomy, displacement of the recurrent laryngeal nerve (RLN) or vagus nerve (VN) in some complicated cases can increase the risk of injury. Although increasing the stimulus current can facilitate nerve mapping and localization, the safety of a high-current stimulus remains unknown. Therefore, this study evaluated the safety of a high-current stimulus in a porcine model. METHODS: Short-duration (1 minute), high-current (3, 5, 10, 15, 20, 25, and 30 mA at 4Hz) stimulus pulses were repeatedly applied to the RLN or VN in six anesthetized piglets...
January 13, 2018: Laryngoscope
https://www.readbyqxmd.com/read/29328458/chitosan-conduit-combined-with-hyaluronic-acid-prevent-sciatic-nerve-scar-in-a-rat-model-of-peripheral-nerve-crush-injury
#11
Runxin Li, Huawei Liu, Haitao Huang, Wenting Bi, Rongzeng Yan, Xinying Tan, Weisheng Wen, Chao Wang, Wenling Song, Yanhua Zhang, Feng Zhang, Min Hu
In the present study, the effects of hyaluronic acid (HA) combined with chitosan conduit on peripheral nerve scarring and regeneration were investigated in a rat model of peripheral nerve crush injury. A total of 60 Sprague-Dawley rats were randomly distributed into four groups (15 rats in each group), in which the nerve was either not treated (control group) or treated with chitosan conduit, hyaluronic acid, or chitosan conduit coupled with hyaluronic acid following clamp injury to the sciatic nerve. The surgical sites were evaluated by assessing the sciatic functional index, the degree of scar adhesions, the numbers of myelinated nerve fibers, the average diameter of myelinated nerve fibers and the myelin sheath thickness...
January 8, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29318337/full-endoscopic-posterior-foraminotomy-surgery-for-cervical-disc-herniations
#12
REVIEW
M Komp, S Oezdemir, P Hahn, S Ruetten
OBJECTIVE: Surgery for cervical disc herniation with full-endoscopic posterior access. INDICATIONS: Cervical disc herniation and neuroforaminal pathology with radicular symptoms. CONTRAINDICATIONS: Neck pain alone, cervical myelopathy or pathologies with central nervous system symptoms, instabilities requiring correction/instabilities. SURGICAL TECHNIQUE: Introduction of a surgical tube to the facet joint at the level to be operated on...
January 9, 2018: Operative Orthopädie und Traumatologie
https://www.readbyqxmd.com/read/29316845/rho-inhibitor-vx-210-in-acute-traumatic-subaxial-cervical-spinal-cord-injury-design-of-the-spinal-cord-injury-rho-inhibition-investigation-spring-clinical-trial
#13
Michael G Fehlings, Kee D Kim, Bizhan Aarabi, Marco Rizzo, Lisa M Bond, Lisa McKerracher, Alexander Vaccaro, David O Okonkwo
Traumatic spinal cord injury (SCI) is associated with a lifetime of disability stemming from loss of motor, sensory, and autonomic functions; these losses, along with increased comorbid sequelae, negatively impact health outcomes and quality of life. Early decompression surgery after SCI can enhance patient outcomes but does not directly facilitate neural repair and regeneration. Currently, there are no FDA-approved pharmacologic therapies to augment motor function and functional recovery in individuals with traumatic SCI...
January 9, 2018: Journal of Neurotrauma
https://www.readbyqxmd.com/read/29304004/effects-of-fluoxetine-on-hippocampal-neurogenesis-and-neuroprotection-in-the-model-of-global-cerebral-ischemia-in-rats
#14
Marina Khodanovich, Alena Kisel, Marina Kudabaeva, Galina Chernysheva, Vera Smolyakova, Elena Krutenkova, Irina Wasserlauf, Mark Plotnikov, Vasily Yarnykh
A selective serotonin reuptake inhibitor, fluoxetine, has recently attracted a significant interest as a neuroprotective therapeutic agent. There is substantial evidence of improved neurogenesis under fluoxetine treatment of brain ischemia in animal stroke models. We studied long-term effects of fluoxetine treatment on hippocampal neurogenesis, neuronal loss, inflammation, and functional recovery in a new model of global cerebral ischemia (GCI). Brain ischemia was induced in adult Wistar male rats by transient occlusion of three main vessels originating from the aortic arch and providing brain blood supply...
January 5, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29303470/previously-unreported-complications-associated-with-integrated-cage-screws-following-anterior-lumbar-interbody-fusion-report-of-2-cases
#15
Neginder Saini, Mohammad Zaidi, Maureen T Barry, Robert F Heary
Anterior lumbar interbody fusion (ALIF) is a widely performed surgical treatment for various lumbar spine pathologies. The authors present the first reports of virtually identical cases of complications with integrated screws in stand-alone interbody cages. Two patients presented with the onset of S-1 radiculopathy due to screw misplacements following an ALIF procedure. In both cases, an integrated screw from the cage penetrated the dorsal aspect of the S-1 cortical margin of the vertebra, extended into the neural foramen, and injured the traversing left S-1 nerve roots...
January 5, 2018: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/29300049/hirschsprung-disease-integrating-basic-science-and-clinical-medicine-to-improve-outcomes
#16
REVIEW
Robert O Heuckeroth
Hirschsprung disease is defined by the absence of enteric neurons at the end of the bowel. The enteric nervous system (ENS) is the intrinsic nervous system of the bowel and regulates most aspects of bowel function. When the ENS is missing, there are no neurally mediated propulsive motility patterns, and the bowel remains contracted, causing functional obstruction. Symptoms of Hirschsprung disease include constipation, vomiting, abdominal distension and growth failure. Untreated disease usually causes death in childhood because bloodstream bacterial infections occur in the context of bowel inflammation (enterocolitis) or bowel perforation...
January 4, 2018: Nature Reviews. Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/29290128/short-term-outcomes-of-lateral-lumbar-interbody-fusion-without-decompression-for-the-treatment-of-symptomatic-degenerative-spondylolisthesis-at-l4-5
#17
Peter G Campbell, Pierce D Nunley, David Cavanaugh, Eubulus Kerr, Philip Andrew Utter, Kelly Frank, Marcus Stone
OBJECTIVE Recently, authors have called into question the utility and complication index of the lateral lumbar interbody fusion procedure at the L4-5 level. Furthermore, the need for direct decompression has also been debated. Here, the authors report the clinical and radiographic outcomes of transpsoas lumbar interbody fusion, relying only on indirect decompression to treat patients with neurogenic claudication secondary to Grade 1 and 2 spondylolisthesis at the L4-5 level. METHODS The authors conducted a retrospective evaluation of 18 consecutive patients with Grade 1 or 2 spondylolisthesis from a prospectively maintained database...
January 2018: Neurosurgical Focus
https://www.readbyqxmd.com/read/29284599/spinal-arteriovenous-vascular-malformations-in-patients-with-neural-tube-defects
#18
E Giordan, C Bortolotti, G Lanzino, W Brinjikji
BACKGROUND AND PURPOSE: Neural tube defects, such as tethered cord, intradural lipoma, or myelomeningocele may coexist with spinal vascular malformations. The coexistence of these 2 rare entities is suggestive of a causal relationship between them, which may lead to further understanding of their pathogenesis. We present a series of 6 patients with epidural spinal arteriovenous fistulas associated with neural tube defects. MATERIALS AND METHODS: We retrieved cases of spinal vascular malformations associated with neural tube defects seen at our institution...
December 28, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/29283938/immediate-hypoglossal-facial-anastomosis-in-patients-with-facial-interruption
#19
Sertac Yetiser
Hypoglossal-facial anastomosis provides excellent motor supply to the mimetic muscles of the face when there is no chance of recovery of the damaged facial nerve. However, to achieve optimal results, the timing of facial nerve surgery based on electrophysiological testing and clinical evaluation requires close follow-up of the patient. Functional results after delayed surgery are not predictable and depend on the number of surviving fibers, type of injury, severity of damage, degree of infiltration of inflammatory cells, and local fibrosis...
December 27, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29283918/clinical-utility-of-intraoperative-motor-evoked-potential-monitoring-to-prevent-postoperative-spinal-cord-injury-in-thoracic-and-thoracoabdominal-aneurysm-repair-an-audit-of-the-japanese-association-of-spinal-cord-protection-in-aortic-surgery-database
#20
Kenji Yoshitani, Kenichi Masui, Masahiko Kawaguchi, Mikito Kawamata, Manabu Kakinohana, Shinya Kato, Kyoko Hasuwa, Michiaki Yamakage, Yusuke Yoshikawa, Kimitoshi Nishiwaki, Tadashi Aoyama, Yoshimi Inagaki, Kazumasa Yamasaki, Mishiya Matsumoto, Kazuyoshi Ishida, Atsuo Yamashita, Katsuhiro Seo, Shinichi Kakumoto, Hironobu Hayashi, Yuu Tanaka, Satoshi Tanaka, Takashi Ishida, Hiroyuki Uchino, Takayasu Kakinuma, Yoshitsugu Yamada, Yoshiteru Mori, Shunsuke Izumi, Kunihiro Nishimura, Michikazu Nakai, Yoshihiko Ohnishi
BACKGROUND: Spinal cord ischemic injury is the most devastating sequela of descending and thoracoabdominal aortic surgery. Motor-evoked potentials (MEPs) have been used to intraoperatively assess motor tract function, but it remains unclear whether MEP monitoring can decrease the incidence of postoperative motor deficits. Therefore, we reviewed multicenter medical records of patients who had undergone descending and thoracoabdominal aortic repair (both open surgery and endovascular repair) to assess the association of MEP monitoring with postoperative motor deficits...
December 26, 2017: Anesthesia and Analgesia
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