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https://www.readbyqxmd.com/read/29124439/lennox-gastaut-syndrome-a-comprehensive-review
#1
Ali A Asadi-Pooya
Lennox-Gastaut syndrome (LGS) is considered an epileptic encephalopathy and is defined by a triad of multiple drug-resistant seizure types, a specific EEG pattern showing bursts of slow spike-wave complexes or generalized paroxysmal fast activity, and intellectual disability. The prevalence of LGS is estimated between 1 and 2% of all patients with epilepsy. The etiology of LGS is often divided into two groups: identifiable (genetic-structural-metabolic) in 65 to 75% of the patients and LGS of unknown cause in others...
November 9, 2017: Neurological Sciences
https://www.readbyqxmd.com/read/29058318/seizure-outcome-after-corpus-callosotomy-in-a-large-paediatric-series
#2
David Graham, Deepak Gill, Russell C Dale, Martin M Tisdall
AIM: To describe 20 years of experience with corpus callosotomy at Great Ormond Street Hospital for Children, London and the Children's Hospital at Westmead, Sydney. METHOD: Records of patients who underwent corpus callosotomy between January 1995 and December 2015 were reviewed. Complications of surgery and changes in seizure type and frequency, injuries, and use of antiepileptic drugs were recorded. Drop attacks were analysed using Kaplan-Meier event-free survival curves...
October 23, 2017: Developmental Medicine and Child Neurology
https://www.readbyqxmd.com/read/28986567/enhancing-excitatory-activity-of-somatosensory-cortex-alleviates-neuropathic-pain-through-regulating-homeostatic-plasticity
#3
Wenhui Xiong, Xingjie Ping, Matthew S Ripsch, Grace Santa Cruz Chavez, Heidi Elise Hannon, Kewen Jiang, Chunhui Bao, Vaishnavi Jadhav, Lifang Chen, Zhi Chai, Cungen Ma, Huangan Wu, Jianqiao Feng, Armin Blesch, Fletcher A White, Xiaoming Jin
Central sensitization and network hyperexcitability of the nociceptive system is a basic mechanism of neuropathic pain. We hypothesize that development of cortical hyperexcitability underlying neuropathic pain may involve homeostatic plasticity in response to lesion-induced somatosensory deprivation and activity loss, and can be controlled by enhancing cortical activity. In a mouse model of neuropathic pain, in vivo two-photon imaging and patch clamp recording showed initial loss and subsequent recovery and enhancement of spontaneous firings of somatosensory cortical pyramidal neurons...
October 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28939289/radiosurgery-for-epilepsy-systematic-review-and-international-stereotactic-radiosurgery-society-isrs-practice-guideline
#4
REVIEW
Aileen McGonigal, Arjun Sahgal, Antonio De Salles, Motohiro Hayashi, Marc Levivier, Lijun Ma, Roberto Martinez, Ian Paddick, Samuel Ryu, Ben J Slotman, Jean Régis
BACKGROUND: While there are many reports of radiosurgery for treatment of drug-resistant epilepsy, a literature review is lacking. OBJECTIVE: The aim of this systematic review is to summarize current literature on the use of stereotactic radiosurgery (RS) for treatment of epilepsy. METHODS: Literature search was performed using various combinations of the search terms "radiosurgery", "stereotactic radiosurgery", "Gamma Knife", "epilepsy" and "seizure", from 1990 until October 2015...
September 19, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/28928710/electroencephalography-network-effects-of-corpus-callosotomy-in-patients-with-lennox-gastaut-syndrome
#5
Jun-Ge Liang, Dongpyo Lee, Song Ee Youn, Heung Dong Kim, Nam-Young Kim
OBJECTIVES: This study aimed to investigate the functional network effects of corpus callosotomy (CC), a well-recognized palliative surgical therapy for patients with Lennox-Gastaut syndrome (LGS). Specifically, we sought to gain insight into the effects of CC on LGS remission, based on brain networks in LGS by calculating network metrics and evaluating by network measures before and after surgery. METHODS: Electroencephalographic recordings made during preoperative and 3-month postoperative states in 14 patients with LGS who had undergone successful CC were retrospectively analyzed...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28815309/elimination-of-medically-intractable-epileptic-drop-attacks-following-endoscopic-total-corpus-callosotomy-in-rett-syndrome
#6
Keisuke Ueda, Sandeep Sood, Eishi Asano, Ajay Kumar, Aimee F Luat
INTRODUCTION: Rett syndrome is a neurodevelopmental genetic disorder, characterized by developmental delay, hand stereotypies, abnormal gait, and acquired microcephaly. Epilepsy is very common in Rett syndrome and can be medically intractable. It remains uncertain if a patient with epileptic drop attacks associated with this genetic disease can benefit from corpus callosotomy. CASE REPORT: We report an 8-year-old girl with Rett syndrome and medically intractable epileptic drop attacks who underwent endoscopic total corpus callosotomy without any complications that led to the successful elimination of her seizures...
November 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28673533/successful-corpus-callosotomy-for-doose-syndrome
#7
Sotaro Kanai, Tohru Okanishi, Mitsuyo Nishimura, Kentaro Iijima, Takuya Yokota, Tomohiro Yamazoe, Ayataka Fujimoto, Hideo Enoki, Takamichi Yamamoto
Doose syndrome (epilepsy with myoclonic-atonic seizures) is an epilepsy syndrome with an incidence of approximately 1-2% of childhood-onset epilepsies. Although this syndrome is associated with multiple types of generalized seizures, the diagnosis is based on the presence of myoclonic-atonic seizures. Eighteen percent of patients have refractory seizures and intellectual disabilities. There have, however, been a few reports on the efficacy of surgical treatment for Doose syndrome. We describe a case of Doose syndrome in a 10-year-old boy...
June 30, 2017: Brain & Development
https://www.readbyqxmd.com/read/28669265/contralateral-transcallosal-resection-of-a-ventricular-body-arteriovenous-malformation-3d-operative-video
#8
Brian P Walcott, Jae Seung Bang, Omar Choudhri, Sirin Gandhi, Halima Tabani, Arnau Benet, Michael T Lawton
A 46-year-old male presented with an incidentally discovered left ventricular body arteriovenous malformation (AVM). It measured 2 cm in diameter and had drainage via an atrial vein into the internal cerebral vein (Spetzler-Martin Grade III, Supplementary Grade 4). Preoperative embolization of the posterior medial choroidal artery reduced nidus size by 50%. Subsequently, he underwent a right-sided craniotomy for a contralateral transcallosal approach to resect the AVM. This case demonstrates strategic circumferential disconnection of feeding arteries (FAs) to the nidus, the use of aneurysm clips to control large FAs, and the use of dynamic retraction and importance of a generous callosotomy...
July 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28640803/brain-network-eigenmodes-provide-a-robust-and-compact-representation-of-the-structural-connectome-in-health-and-disease
#9
Maxwell B Wang, Julia P Owen, Pratik Mukherjee, Ashish Raj
Recent research has demonstrated the use of the structural connectome as a powerful tool to characterize the network architecture of the brain and potentially generate biomarkers for neurologic and psychiatric disorders. In particular, the anatomic embedding of the edges of the cerebral graph have been postulated to elucidate the relative importance of white matter tracts to the overall network connectivity, explaining the varying effects of localized white matter pathology on cognition and behavior. Here, we demonstrate the use of a linear diffusion model to quantify the impact of these perturbations on brain connectivity...
June 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/28578510/trans-falcine-and-contralateral-sub-frontal-electrode-placement-in-pediatric-epilepsy-surgery-technical-note
#10
Jonathan Pindrik, Nguyen Hoang, R Shane Tubbs, Brandon J Rocque, Curtis J Rozzelle
INTRODUCTION: Phase II monitoring with intracranial electroencephalography (ICEEG) occasionally requires bilateral placement of subdural (SD) strips, grids, and/or depth electrodes. While phase I monitoring often demonstrates a preponderance of unilateral findings, individual studies (video EEG, single photon emission computed tomography [SPECT], and positron emission tomography [PET]) can suggest or fail to exclude a contralateral epileptogenic onset zone. This study describes previously unreported techniques of trans-falcine and sub-frontal insertion of contralateral SD grids and depth electrodes for phase II monitoring in pediatric epilepsy surgery patients when concern about bilateral abnormalities has been elicited during phase I monitoring...
August 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28516327/long-term-outcomes-of-epilepsy-surgery-in-tuberous-sclerosis-complex
#11
Shuli Liang, Juncheng Zhang, Zhixian Yang, Shaohui Zhang, Zhiqiang Cui, Jianfei Cui, Jiwu Zhang, Na Liu, Ping Ding
Approximately 50% of patients with tuberous sclerosis complex (TSC) present intractable epilepsy, and surgery is an option for those patients. Hereby, we analyze long-term seizure control and neuropsychological outcomes of epilepsy surgery in patients with TSC. Clinical data were retrospectively collected from 66 patients with TSC and epilepsy followed up over 5 years, 51 of whom underwent epilepsy surgery between 2001 and 2011. Reductions in the number of seizures were analyzed at 1-year (1FU), 5-year (5FU), and 10-year (10FU) follow-ups visits after the operation...
June 2017: Journal of Neurology
https://www.readbyqxmd.com/read/28511630/corpus-callosotomy-for-intractable-epilepsy-revisited-the-children-s-hospital-of-michigan-series
#12
Aimee F Luat, Eishi Asano, Ajay Kumar, Harry T Chugani, Sandeep Sood
Corpus callosotomy is a palliative procedure performed to reduce the severity of drug-resistant epilepsy. The authors assessed its efficacy on different seizure types in 20 subjects (age range 5-19 years); 8 with active vagus nerve stimulator. Fifteen had complete callosotomy, 3 had anterior 2/3, and 2 had anterior 2/3 followed later by complete callosotomy. Ten had endoscopic approach. In all, 65% had ≥ 50% reduction of generalized seizures leading to falls (atonic, tonic, myoclonic); 35% became seizure-free (follow-up period: 6 months to 9 years; mean 3 years)...
June 2017: Journal of Child Neurology
https://www.readbyqxmd.com/read/28488608/epilepsy-surgery-in-children
#13
REVIEW
Sita Jayalakshmi, Sudhindra Vooturi, Swapan Gupta, Manas Panigrahi
Approximately 60% of all patients with epilepsy suffer from focal epilepsy syndromes. In approximately 15% of these patients, the seizures are not adequately controlled with anticonvulsive drugs, and such patients are potential candidates for surgical treatment and majority are children. Epilepsy surgery in children, who have been carefully chosen, can result in either seizure freedom or a marked (>90%) reduction in seizures in approximately two-third of children with intractable seizures. In the multimodality presurgical evaluation approach, sufficient concordance should be established among various independent investigations, thus identifying the location and extent of the epileptogenic zone with a high degree of confidence...
May 2017: Neurology India
https://www.readbyqxmd.com/read/28461749/treatment-resistant-lennox-gastaut-syndrome-therapeutic-trends-challenges-and-future-directions
#14
REVIEW
Adam P Ostendorf, Yu-Tze Ng
Lennox-Gastaut syndrome is a severe, childhood-onset electroclinical syndrome comprised of multiple seizure types, intellectual and behavioral disturbances and characteristic findings on electroencephalogram of slow spike and wave complexes and paroxysmal fast frequency activity. Profound morbidity often accompanies a common and severe seizure type, the drop attack. Seizures often remain refractory, or initial treatment efficacy fades. Few individuals are seizure free despite the development of multiple generations of antiseizure medications over decades and high-level evidence on several choices...
2017: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/28460007/consciousness-post-corpus-callosotomy
#15
Kimford J Meador, David W Loring, K Sathian
No abstract text is available yet for this article.
July 1, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/28386923/corpus-callosotomy-open-and-endoscopic-surgical-techniques
#16
REVIEW
Matthew D Smyth, Ananth K Vellimana, Eishi Asano, Sandeep Sood
Corpus callosotomy is a palliative surgical procedure for patients with refractory epilepsy. It can be performed through an open approach via a standard craniotomy and the aid of an operating microscope, or alternatively via a mini-craniotomy with endoscope assistance. The extent of callosal disconnection performed varies according to indications and surgeon preference. In this article, we describe both open and endoscopic surgical techniques for anterior and complete corpus callosotomy.
April 2017: Epilepsia
https://www.readbyqxmd.com/read/28348940/minimally-invasive-robotic-laser-corpus-callosotomy-a-proof-of-concept
#17
Harminder Singh, Walid I Essayed, Sayantan Deb, Caitlin Hoffman, Theodore H Schwartz
INTRODUCTION: We describe the feasibility of using minimally invasive robotic laser interstitial thermotherapy (LITT) for achieving an anterior two-thirds as well as a complete corpus callosotomy. METHODS: Ten probe trajectories were plotted on normal magentic resonance imaging (MRI) scans using the Brainlab Stereotactic Planning Software (Brainlab, Munich, Germany). The NeuroBlate® System (Monteris Medical, MN, USA) was used to conform the thermal burn to the corpus callosum along the trajectory of the probe...
February 10, 2017: Curēus
https://www.readbyqxmd.com/read/28346953/lennox-gastaut-syndrome-a-state-of-the-art-review
#18
Mario Mastrangelo
Lennox-Gastaut syndrome (LGS) is a severe age-dependent epileptic encephalopathy usually with onset between 1 and 8 years of age. Functional neuroimaging studies recently introduced the concept of Lennox-Gastaut as "secondary network epilepsy" resulting from dysfunctions of a complex system involving both cortical and subcortical structures (default-mode network, corticoreticular connections, and thalamus). These dysfunctions are produced by different disorders including hypoxic-ischemic encephalopathies, meningoencephalitis, cortical malformations, neurocutaneous disorders, or tumors...
June 2017: Neuropediatrics
https://www.readbyqxmd.com/read/28298036/efficacy-and-safety-of-corpus-callosotomy-after-vagal-nerve-stimulation-in-patients-with-drug-resistant-epilepsy
#19
Jennifer Hong, Atman Desai, Vijay M Thadani, David W Roberts
OBJECTIVE Vagal nerve stimulation (VNS) and corpus callosotomy (CC) have both been shown to be of benefit in the treatment of medically refractory epilepsy. Recent case series have reviewed the efficacy of VNS in patients who have undergone CC, with encouraging results. There are few data, however, on the use of CC following VNS therapy. METHODS The records of all patients at the authors' center who underwent CC following VNS between 1998 and 2015 were reviewed. Patient baseline characteristics, operative details, and postoperative outcomes were analyzed...
March 3, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28284397/optimizing-the-diagnosis-and-management-of-dravet-syndrome-recommendations-from-a-north-american-consensus-panel
#20
Elaine C Wirrell, Linda Laux, Elizabeth Donner, Nathalie Jette, Kelly Knupp, Mary Anne Meskis, Ian Miller, Joseph Sullivan, Michelle Welborn, Anne T Berg
OBJECTIVES: To establish standards for early, cost-effective, and accurate diagnosis; optimal therapies for seizures; and recommendations for evaluation and management of comorbidities for children and adults with Dravet syndrome, using a modified Delphi process. METHODS: An expert panel was convened comprising epileptologists with nationally recognized expertise in Dravet syndrome and parents of children with Dravet syndrome, whose experience and understanding was enhanced by their active roles in Dravet syndrome associations...
March 2017: Pediatric Neurology
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