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https://www.readbyqxmd.com/read/28937508/status-dystonicus-in-childhood
#1
Daniel E Lumsden, Mary D King, Nicholas M Allen
PURPOSE OF REVIEW: Dystonia is a common paediatric neurological condition. At its most severe, dystonia may lead to life-threatening complications, a state termed status dystonicus. This review provides an update on the definition, causes, management and outcome of childhood status dystonicus. RECENT FINDINGS: High-quality studies in childhood status dystonicus are lacking, though an increasing number of case series have been published. Status dystonicus appears to occur more frequently in children compared with adults, with a clear precipitant identified in around two-thirds of cases...
September 20, 2017: Current Opinion in Pediatrics
https://www.readbyqxmd.com/read/28930542/deep-brain-stimulation-foundations-and-future-trends
#2
David J Aum, Travis S Tierney
Deep brain stimulation (DBS) has emerged as a revolutionary treatment option for essential tremor (ET), Parkinson's disease (PD), idiopathic dystonia, and severe obsessive-compulsive disorder (OCD). This article reviews the historical foundations of DBS including basal ganglia pathophysiological models, classic principles of electrical stimulation, technical components of the DBS system, treatment risks, and future directions for DBS. Chronic high frequency stimulation induces a number of functional changes from fast physiological to slower metabolic effects and ultimately leads to structural reorganization of the brain, so-called neuroplasticity...
January 1, 2018: Frontiers in Bioscience (Landmark Edition)
https://www.readbyqxmd.com/read/28906342/deep-brain-stimulation-for-monogenic-dystonia
#3
Bhooma R Aravamuthan, Jeff L Waugh, Scellig S Stone
PURPOSE OF REVIEW: Deep brain stimulation (DBS) has recently emerged as an important management option in children with medically refractory dystonia. DBS is most commonly used, best studied, and thought to be most efficacious for a select group of childhood or adolescent onset monogenic dystonias (designated with a standard 'DYT' prefix). We review how to clinically recognize these types of dystonia and the relative efficacy of DBS for key monogenic dystonias. RECENT FINDINGS: Though used for dystonia in adults for several years, DBS has only lately been used in children...
September 12, 2017: Current Opinion in Pediatrics
https://www.readbyqxmd.com/read/28904473/surgical-interventions-for-task-specific-dystonia-writer-s-dystonia
#4
Paresh K Doshi, Raghvendra Vijay Ramdasi, Bharati Karkera, Dilraj B Kadlas
OBJECTIVES: Writer's cramp is a focal dystonia producing abnormal postures during selective motor activities. Thalamotomy or globus pallidus internus deep brain stimulation (GPi DBS) has been used as a surgical treatment in patients not responding to medical treatment. MATERIALS AND METHODS: Eight patients (all men, age 16-47 years) with refractory focal hand dystonia underwent either ventrooralis (Vo) thalamotomy (seven patients) or GPi DBS (one patient) using stereotactic techniques...
July 2017: Annals of Indian Academy of Neurology
https://www.readbyqxmd.com/read/28902876/postoperative-lead-migration-in-deep-brain-stimulation-surgery-incidence-risk-factors-and-clinical-impact
#5
Takashi Morishita, Justin D Hilliard, Michael S Okun, Dan Neal, Kelsey A Nestor, David Peace, Alden A Hozouri, Mark R Davidson, Francis J Bova, Justin M Sporrer, Genko Oyama, Kelly D Foote
INTRODUCTION: Deep brain stimulation (DBS) is an effective treatment for multiple movement disorders and shows substantial promise for the treatment of some neuropsychiatric and other disorders of brain neurocircuitry. Optimal neuroanatomical lead position is a critical determinant of clinical outcomes in DBS surgery. Lead migration, defined as an unintended post-operative displacement of the DBS lead, has been previously reported. Despite several reports, however, there have been no systematic investigations of this issue...
2017: PloS One
https://www.readbyqxmd.com/read/28894408/deep-brain-stimulation-dbs-for-movement-disorders-an-experience-in-hospital-universiti-sains-malaysia-husm-involving-12-patients
#6
Lim Liang Hooi, Diana Noma Fitzrol, Senthil Kumar Rajapathy, Tan Yew Chin, Sanihah Abdul Halim, Regunath Kandasamy, Wan Mohd Nazaruddin Wan Hassan, Badrisyah Idris, Abdul Rahman Izaini Ghani, Zamzuri Idris, John Tharakan, Sarun Nunta-Aree, Jafri Malin Abdullah
Deep brain stimulation (DBS) was first introduced in 1987 to the developed world. As a developing country Malaysia begun its movement disorder program by doing ablation therapy using the Radionics system. Hospital Universiti Sains Malaysia a rural based teaching hospital had to take into consideration both health economics and outcomes in the area that it was providing neurosurgical care for when it initiated its Deep Brain Stimulation program. Most of the patients were from the low to medium social economic groups and could not afford payment for a DBS implant...
March 2017: Malaysian Journal of Medical Sciences: MJMS
https://www.readbyqxmd.com/read/28800173/non-invasive-brain-stimulation-might-act-in-synergy-with-invasive-brain-stimulation-in-dystonia
#7
M Beudel
Dystonia is a disabling disorder for which, in the far majority of cases, no curative treatment is available. Current treatment consists medication, botulinum toxin injections and Deep Brain Stimulation (DBS), which all have their own limitations. This article is protected by copyright. All rights reserved.
August 11, 2017: European Journal of Neurology: the Official Journal of the European Federation of Neurological Societies
https://www.readbyqxmd.com/read/28772097/what-have-we-learned-about-movement-disorders-from-functional-neurosurgery
#8
Andres M Lozano, William D Hutchison, Suneil K Kalia
Modern functional neurosurgery for movement disorders such as Parkinson's disease, tremor, and dystonia involves the placement of focal lesions or the application of deep brain stimulation (DBS) within circuits that modulate motor function. Precise targeting of these motor structures can be further refined by the use of electrophysiological approaches. In particular, microelectrode recordings enable the delineation of neuroanatomic structures. In the course of these operations, there is an opportunity not only to map basal ganglia structures but also to gain insights into how disturbances in neural activity produce movement disorders...
July 25, 2017: Annual Review of Neuroscience
https://www.readbyqxmd.com/read/28768840/thalamic-deep-brain-stimulation-for-tremor-in-parkinson-disease-essential-tremor-and-dystonia
#9
Rubens Gisbert Cury, Valerie Fraix, Anna Castrioto, Maricely Ambar Pérez Fernández, Paul Krack, Stephan Chabardes, Eric Seigneuret, Alim-Louis Benabid, Elena Moro
OBJECTIVE: To report on the long-term outcomes of deep brain stimulation (DBS) of the thalamic ventral intermediate nucleus (VIM) in Parkinson disease (PD), essential tremor (ET), and dystonic tremor. METHODS: One hundred fifty-nine patients with PD, ET, and dystonia underwent VIM DBS due to refractory tremor at the Grenoble University Hospital. The primary outcome was a change in the tremor scores at 1 year after surgery and at the latest follow-up (21 years). Secondary outcomes included the relationship between tremor score reduction over time and the active contact position...
August 2, 2017: Neurology
https://www.readbyqxmd.com/read/28752857/insights-into-the-mechanisms-of-deep-brain-stimulation
#10
REVIEW
Keyoumars Ashkan, Priya Rogers, Hagai Bergman, Ismail Ughratdar
Despite long-term and widespread use of deep brain stimulation (DBS) in a variety of neurological conditions, the underlying mechanisms of action have been elusive. Growing evidence suggests that DBS acts through multimodal mechanisms that are not limited to inhibition and excitation of basal ganglia circuits. DBS also seems to act over variable time spans - for example, the effects on tremor are immediate, whereas the effects on dystonia emerge over several weeks - suggesting that large networks are targeted...
September 2017: Nature Reviews. Neurology
https://www.readbyqxmd.com/read/28739219/systematic-review-of-hardware-related-complications-of-deep-brain-stimulation-do-new-indications-pose-an-increased-risk
#11
Onanong Jitkritsadakul, Roongroj Bhidayasiri, Suneil K Kalia, Mojgan Hodaie, Andres M Lozano, Alfonso Fasano
INTRODUCTION: Deep Brain Stimulation (DBS) is an effective treatment extended broadly to many neurological and psychiatric disorders. Nevertheless, complications may arise during DBS procedures or following implantation due to implanted hardware. This may result in both minor and major adverse events that may necessitate hardware removal and/or compromise maximal therapeutic benefit for the patient. OBJECTIVES AND METHODS: To identify relevant literature on hardware-related complications from DBS procedures by performing a systematic review, and propose how to identify at-risk group and possible preventive approaches...
July 13, 2017: Brain Stimulation
https://www.readbyqxmd.com/read/28712991/low-beta-cortico-pallidal-coherence-decreases-during-movement-and-correlates-with-overall-reaction-time
#12
Bernadette C M van Wijk, Wolf-Julian Neumann, Gerd-Helge Schneider, Tilmann H Sander, Vladimir Litvak, Andrea A Kühn
Beta band oscillations (13-30 Hz) are a hallmark of cortical and subcortical structures that are part of the motor system. In addition to local population activity, oscillations also provide a means for synchronization of activity between regions. Here we examined the role of beta band coherence between the internal globus pallidus (GPi) and (motor) cortex during a simple reaction time task performed by nine patients with idiopathic dystonia. We recorded local field potentials from deep brain stimulation (DBS) electrodes implanted in bilateral GPi in combination with simultaneous whole-head magneto-encephalography (MEG)...
July 13, 2017: NeuroImage
https://www.readbyqxmd.com/read/28712731/cervical-dystonia-patients-display-subclinical-gait-changes
#13
Marcello Esposito, Raffaele Dubbioso, Silvio Peluso, Antonio Picone, Bruno Corrado, Clemente Servodio Iammarone, Roberto Allocca, Fiore Manganelli, Lucio Santoro, Alfonso Fasano
INTRODUCTION: Gait disorders in cervical dystonia (CD) are reported in patients under DBS or in severe cases complicated with spinal deformities. OBJECTIVE: to assess walking motor pattern in CD patients without DBS and not presenting scoliosis. METHODS: Computerized gait analysis (CGA) was performed in CD patients, before and after botulinum toxin (BoNT) injections, and in healthy controls (HC). Spatiotemporal (ST) parameters were compared between CD and HC groups...
July 10, 2017: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/28690015/causes-of-failure-of-pallidal-deep-brain-stimulation-in-cases-with-pre-operative-diagnosis-of-isolated-dystonia
#14
K Amande M Pauls, Joachim K Krauss, Constanze E Kämpfer, Andrea A Kühn, Christoph Schrader, Martin Südmeyer, Niels Allert, Rainer Benecke, Christian Blahak, Jana K Boller, Gereon R Fink, Wolfgang Fogel, Thomas Liebig, Faycal El Majdoub, Philipp Mahlknecht, Josef Kessler, Joerg Mueller, Juergen Voges, Matthias Wittstock, Alexander Wolters, Mohammad Maarouf, Elena Moro, Jens Volkmann, Kailash P Bhatia, Lars Timmermann
INTRODUCTION: Pallidal deep brain stimulation (GPi-DBS) is an effective therapy for isolated dystonia, but 10-20% of patients show improvement below 25-30%. We here investigated causes of insufficient response to GPi-DBS in isolated dystonia in a cross-sectional study. METHODS: Patients with isolated dystonia at time of surgery, and <30% improvement on the Burke-Fahn-Marsden dystonia-rating-scale (BFMDRS) after ≥6 months of continuous GPi-DBS were videotaped ON and OFF stimulation, and history, preoperative videos, brain MRI, medical records, stimulation settings, stimulation system integrity, lead location, and genetic information were obtained and reviewed by an expert panel...
June 28, 2017: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/28678830/adverse-events-in-deep-brain-stimulation-a-retrospective-long-term-analysis-of-neurological-psychiatric-and-other-occurrences
#15
Carsten Buhmann, Torge Huckhagel, Katja Engel, Alessandro Gulberti, Ute Hidding, Monika Poetter-Nerger, Ines Goerendt, Peter Ludewig, Hanna Braass, Chi-Un Choe, Kara Krajewski, Christian Oehlwein, Katrin Mittmann, Andreas K Engel, Christian Gerloff, Manfred Westphal, Johannes A Köppen, Christian K E Moll, Wolfgang Hamel
BACKGROUND AND OBJECTIVE: The extent to which deep brain stimulation (DBS) can improve quality of life may be perceived as a permanent trade-off between neurological improvements and complications of therapy, comorbidities, and disease progression. PATIENTS AND METHODS: We retrospectively investigated 123 consecutive and non-preselected patients. Indications for DBS surgery were Parkinson's disease (82), dystonia (18), tremor of different etiology (21), Huntington's disease (1) and Gilles de la Tourette syndrome (1)...
2017: PloS One
https://www.readbyqxmd.com/read/28615985/treatment-of-movement-disorders-with-focused-ultrasound
#16
REVIEW
Paul S Fishman, Victor Frenkel
Although the use of ultrasound as a potential therapeutic modality in the brain has been under study for several decades, relatively few neuroscientists or neurologists are familiar with this technology. Stereotactic brain lesioning had been widely used as a treatment for medically refractory patients with essential tremor (ET), Parkinson disease (PD), and dystonia but has been largely replaced by deep brain stimulation (DBS) surgery, with advantages both in safety and efficacy. However, DBS is associated with complications including intracerebral hemorrhage, infection, and hardware malfunction...
2017: Journal of Central Nervous System Disease
https://www.readbyqxmd.com/read/28601961/basal-ganglia-movement-disorders-and-deep-brain-stimulation-advances-made-through-non-human-primate-research
#17
REVIEW
Thomas Wichmann, Hagai Bergman, Mahlon R DeLong
Studies in non-human primates (NHPs) have led to major advances in our understanding of the function of the basal ganglia and of the pathophysiologic mechanisms of hypokinetic movement disorders such as Parkinson's disease and hyperkinetic disorders such as chorea and dystonia. Since the brains of NHPs are anatomically very close to those of humans, disease states and the effects of medical and surgical approaches, such as deep brain stimulation (DBS), can be more faithfully modeled in NHPs than in other species...
June 10, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/28590521/seventy-years-of-pallidotomy-for-movement-disorders
#18
REVIEW
Laura Cif, Marwan Hariz
The year 2017 marks the 70th anniversary of the birth of human stereotactic neurosurgery. The first procedure was a pallidotomy for Huntington's disease. However, it was for Parkinson's disease that pallidotomy was soon adopted worldwide. Pallidotomy was abandoned in the late 1950s in favor of thalamotomy because of the latter's more striking effect on tremor. The advent of levodopa put a halt to all surgery for PD. In the mid-1980s, Laitinen reintroduced the posteroventral pallidotomy of Leksell, and this procedure spread worldwide thanks to its efficacy on most parkinsonian symptoms including levodopa-induced dyskinesias and thanks to basic scientific work confirming the role of the globus pallidus internus in the pathophysiology of PD...
July 2017: Movement Disorders: Official Journal of the Movement Disorder Society
https://www.readbyqxmd.com/read/28586458/disease-stabilization-of-dyt1-positive-primary-generalized-dystonia-with-deep-brain-stimulation-of-the-globus-pallidus-interna-a-15-yr-follow-up
#19
Derrick A Dupre, Raj Nangunoori, Sravanthi Koduri, Cindy Angle, Diane Cantella, Donald Whiting
BACKGROUND AND IMPORTANCE: Primary generalized dystonia (PGD) is a genetic form of dystonia that frequently displays pharmacological resistance and progresses quickly after onset. Deep brain stimulation (DBS) has been used successfully to treat refractory dystonia, specifically globus pallidus interna (GPi) DBS for DYT1-positive PGD patients. Long-term follow-up of the safety and efficacy falls short of the longevity seen in other diseases treated with DBS. CASE PRESENTATION: A male patient presented for neurosurgical evaluation with scapular winging, hand contractures, and violent truncal spasms, which forced him to be bedridden...
June 6, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28552340/long-term-follow-up-of-bilateral-subthalamic-deep-brain-stimulation-for-refractory-tardive-dystonia
#20
Zheng-Dao Deng, Dian-You Li, Chen-Cheng Zhang, Yi-Xin Pan, Jin Zhang, Haiyan Jin, Kristina Zeljec, Shi-Kun Zhan, Bo-Min Sun
BACKGROUND: No effective treatment for tardive dystonia (TD) has been well established. Deep brain stimulation (DBS) can ameliorate motor manifestations in primary dystonia, and may also be an effective approach for TD. OBJECTIVES: This study aimed to illuminate the long-term efficacy and safety of subthalamic nucleus (STN)-DBS in treating TD. METHODS: Ten patients with refractory TD underwent STN-DBS therapy and were assessed by the Burke-Fahn-Marsden dystonia rating scale (BFMDRS), Abnormal Involuntary Movement Scale (AIMS), Hamilton Depression Scale (HAMD), Hamilton Anxiety Scale (HAMA), and the Short Form (36) Health Survey (SF-36) at four time points: pre-operation, 1 week post-operation, 6 months post-operation, and at a final long-term postsurgical follow-up time point...
May 19, 2017: Parkinsonism & related Disorders
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