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Mandarano R, Danieli A, Petacchi E, Di Pede C, Mondani M, Armellin MT, Facchin D, Martinuzzi A. Deep Brain Stimulation in childhood-onset dystonia due to brain pathology. A long-term study. Eur J Paediatr Neurol 2022; 37:62-67. [PMID: 35124541 DOI: 10.1016/j.ejpn.2022.01.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 12/30/2021] [Accepted: 01/20/2022] [Indexed: 10/19/2022]
Abstract
BACKGROUND Pallidal Deep Brain Stimulation (DBS) is an established treatment option for isolated, inherited or idiopathic dystonia, however data on its safety and efficacy in other forms of dystonia are more limited. OBJECTIVES Retrospective analysis of motor and non-motor outcomes in pediatric onset refractory dystonia due to static or progressive brain disorders in a cohort of patients with a DBS treatment duration ≥12 months. METHODS Multidisciplinary assessments including standardised scales/tests of motor function, pain, quality of life, cognition and language were carried out before implantation and longitudinally afterwards. RESULTS 9 patients were included, 7 had cerebral palsy. Mean age at implantation was 209 months ± 156, mean treatment duration 84 ± 37 months. DBS was well tolerated and positively affected both motor and non-motor functions. In particular, statistically significant improvements were documented in Burke-Fahn-Marsden Scale scores (- 19.9% p 0.01031) at 12 months and in long-term quality of life (+28.6%, p 0.0292). CONCLUSIONS DBS may be a useful treatment option in generalized dystonia associated with brain pathology. Even when the motor benefits are limited, improvements in quality of life and non-motor functions, or the possible prevention of serious dystonia-related complications, may have a significant impact on overall clinical status.
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Affiliation(s)
- Romina Mandarano
- Unit for Severe Disabilities in Developmental Age, Scientific Institute IRCCS E. Medea, Conegliano, Treviso, Italy.
| | - Alberto Danieli
- Unit of Epilepsy and Clinical Neurophysiology, Scientific Institute IRCCS E. Medea, Conegliano, Treviso, Italy
| | - Elisa Petacchi
- Unit for Severe Disabilities in Developmental Age, Scientific Institute IRCCS E. Medea, Conegliano, Treviso, Italy
| | - Chiara Di Pede
- Unit for Severe Disabilities in Developmental Age, Scientific Institute IRCCS E. Medea, Conegliano, Treviso, Italy
| | - Massimo Mondani
- Neurological Unit, S. Maria della Misericordia Universital Hospital, Udine, Italy
| | - Maria Teresa Armellin
- Unit for Severe Disabilities in Developmental Age, Scientific Institute IRCCS E. Medea, Conegliano, Treviso, Italy
| | - Dina Facchin
- Unit for Severe Disabilities in Developmental Age, Scientific Institute IRCCS E. Medea, Conegliano, Treviso, Italy
| | - Andrea Martinuzzi
- Unit for Severe Disabilities in Developmental Age, Scientific Institute IRCCS E. Medea, Conegliano, Treviso, Italy
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Malatt C, Tagliati M. Long-Term Outcomes of Deep Brain Stimulation for Pediatric Dystonia. Pediatr Neurosurg 2022; 57:225-237. [PMID: 35439762 DOI: 10.1159/000524577] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Accepted: 04/06/2022] [Indexed: 11/19/2022]
Abstract
BACKGROUND Deep brain stimulation (DBS) has been utilized for over two decades to treat medication-refractory dystonia in children. Short-term benefit has been demonstrated for inherited, isolated, and idiopathic cases, with less efficacy in heredodegenerative and acquired dystonia. The ongoing publication of long-term outcomes warrants a critical assessment of available information as pediatric patients are expected to live most of their lives with these implants. SUMMARY We performed a review of the literature for data describing motor and neuropsychiatric outcomes, in addition to complications, 5 or more years after DBS placement in patients undergoing DBS surgery for dystonia at an age younger than 21. We identified 20 articles including individual data on long-term motor outcomes after DBS for a total of 78 patients. In addition, we found five articles reporting long-term outcomes after DBS in 9 patients with status dystonicus. Most patients were implanted within the globus pallidus internus, with only a few cases targeting the subthalamic nucleus and ventrolateral posterior nucleus of the thalamus. The average follow-up was 8.5 years, with a range of up to 22 years. Long-term outcomes showed a sustained motor benefit, with median Burke-Fahn-Marsden dystonia rating score improvement ranging from 2.5% to 93.2% in different dystonia subtypes. Patients with inherited, isolated, and idiopathic dystonias had greater improvement than those with heredodegenerative and acquired dystonias. Sustained improvements in quality of life were also reported, without the development of significant cognitive or psychiatric comorbidities. Late adverse events tended to be hardware-related, with minimal stimulation-induced effects. KEY MESSAGES While data regarding long-term outcomes is somewhat limited, particularly with regards to neuropsychiatric outcomes and adverse events, improvement in motor outcomes appears to be preserved more than 5 years after DBS placement.
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Affiliation(s)
- Camille Malatt
- Department of Neurology, Cedars-Sinai Medical Center, Los Angeles, California, USA,
| | - Michele Tagliati
- Department of Neurology, Cedars-Sinai Medical Center, Los Angeles, California, USA
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Gimeno H, Polatajko HJ, Lin JP, Cornelius V, Brown RG. Cognitive Strategy Training in Childhood-Onset Movement Disorders: Replication Across Therapists. Front Pediatr 2021; 8:600337. [PMID: 33553070 PMCID: PMC7861040 DOI: 10.3389/fped.2020.600337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Accepted: 11/24/2020] [Indexed: 11/18/2022] Open
Abstract
Objective: To explore preliminary effectiveness of the Cognitive Orientation to daily Occupational Performance (CO-OP) Approach in improving outcomes in childhood-onset hyperkinetic movement disorders (HMDs) including dyskinetic cerebral palsy following deep brain stimulation (DBS) across UK clinical occupational therapists. Methods: Randomized, multiple-baseline, Single Case Experimental Design N-of-1 trial with replications across participants. Five self-selected goals were identified: three goals were worked on during CO-OP and two goals were left untreated and used to assess skills transfer. Participants were between 6 and 21 years and had received DBS surgery with baseline Manual Ability Classification System (MACS) levels I-IV. Participants were randomized to typical or extended baseline (2 vs. 6 weeks), followed by 10 weekly individual CO-OP sessions. The primary outcome was functional performance measured by the Performance Quality Rating Scale-Individualized (PQRS-I), assessed before, during, and following treatment. Outcome assessors were blinded to baseline allocation, session number, and assessment time. A non-overlapping index, Tau-U, was used to measure effect size. Results: Of the 12 participants recruited, 10 commenced and completed treatment. In total, 63% of trained goals improved with effect sizes 0.66-1.00 ("moderate" to "large" effect), seen for all children in at least one goal. Skills transfer was found in 37% of the untrained goals in six participants. Conclusions: Cognitive strategy use improved participant-selected functional goals in childhood-onset HMD, more than just practice during baseline. Preliminary effectiveness is shown when the intervention is delivered in clinical practice by different therapists in routine clinical settings.
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Affiliation(s)
- Hortensia Gimeno
- Complex Motor Disorders Service, Paediatric Neurosciences, Evelina London Children's Hospital, Guy's & St Thomas' NHS Foundation Trust, London, United Kingdom
- Department of Psychology, King's College London, Institute of Psychiatry, Psychology and Neuroscience, London, United Kingdom
| | - Helene J. Polatajko
- Department of Occupational Science and Occupational Therapy, University of Toronto, Toronto, ON, Canada
| | - Jean-Pierre Lin
- Complex Motor Disorders Service, Paediatric Neurosciences, Evelina London Children's Hospital, Guy's & St Thomas' NHS Foundation Trust, London, United Kingdom
| | - Victoria Cornelius
- Imperial Clinical Trials Unit, Imperial College London, School of Public Health, London, United Kingdom
| | - Richard G. Brown
- Department of Psychology, King's College London, Institute of Psychiatry, Psychology and Neuroscience, London, United Kingdom
- South London and Maudsley NHS Foundation Trust, London, United Kingdom
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Shah SA, Brown P, Gimeno H, Lin JP, McClelland VM. Application of Machine Learning Using Decision Trees for Prognosis of Deep Brain Stimulation of Globus Pallidus Internus for Children With Dystonia. Front Neurol 2020; 11:825. [PMID: 32849251 PMCID: PMC7115974 DOI: 10.3389/fneur.2020.00825] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Accepted: 06/30/2020] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND While Deep Brain Stimulation (DBS) of the Globus pallidus internus is a well-established therapy for idiopathic/genetic dystonia, benefits for acquired dystonia are varied, ranging from modest improvement to deterioration. Predictive biomarkers to aid DBS prognosis for children are lacking, especially in acquired dystonias, such as dystonic Cerebral Palsy. We explored the potential role of machine learning techniques to identify parameters that could help predict DBS outcome. METHODS We conducted a retrospective study of 244 children attending King's College Hospital between September 2007 and June 2018 for neurophysiological tests as part of their assessment for possible DBS at Evelina London Children's Hospital. For the 133 individuals who underwent DBS and had 1-year outcome data available, we assessed the potential predictive value of six patient parameters: sex, etiology (including cerebral palsy), baseline severity (Burke-Fahn-Marsden Dystonia Rating Scale-motor score), cranial MRI and two neurophysiological tests, Central Motor Conduction Time (CMCT) and Somatosensory Evoked Potential (SEP). We applied machine learning analysis to determine the best combination of these features to aid DBS prognosis. We developed a classification algorithm based on Decision Trees (DTs) with k-fold cross validation for independent testing. We analyzed all possible combinations of the six features and focused on acquired dystonias. RESULTS Several trees resulted in better accuracy than the majority class classifier. However, the two features that consistently appeared in top 10 DTs were CMCT and baseline dystonia severity. A decision tree based on CMCT and baseline severity provided a range of sensitivity and specificity, depending on the threshold chosen for baseline dystonia severity. In situations where CMCT was not available, a DT using SEP alone provided better than the majority class classifier accuracy. CONCLUSION The results suggest that neurophysiological parameters can help predict DBS outcomes, and DTs provide a data-driven, highly interpretable decision support tool that lends itself to being used in clinical practice to help predict potential benefit of DBS in dystonic children. Our results encourage the introduction of neurophysiological parameters in assessment pathways, and data collection to facilitate multi-center evaluation and validation of these potential predictive markers and of the illustrative decision support tools presented here.
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Affiliation(s)
- Syed Ahmar Shah
- Usher Institute, Edinburgh Medical School, University of Edinburgh, Edinburgh, United Kingdom
- MRC Brain Network Dynamics Unit, University of Oxford, Oxford, United Kingdom
- Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, United Kingdom
| | - Peter Brown
- MRC Brain Network Dynamics Unit, University of Oxford, Oxford, United Kingdom
- Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, United Kingdom
| | - Hortensia Gimeno
- Children's Neurosciences Department, Evelina London Children's Hospital, Guy's and St Thomas' NHS Foundation Trust, London, United Kingdom
- Women and Children's Health Institute, King's College London, London, United Kingdom
| | - Jean-Pierre Lin
- Children's Neurosciences Department, Evelina London Children's Hospital, Guy's and St Thomas' NHS Foundation Trust, London, United Kingdom
- Women and Children's Health Institute, King's College London, London, United Kingdom
| | - Verity M. McClelland
- Children's Neurosciences Department, Evelina London Children's Hospital, Guy's and St Thomas' NHS Foundation Trust, London, United Kingdom
- Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, United Kingdom
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Jiang H, Wang R, Zheng Z, Zhu J. Deep brain stimulation for the treatment of cerebral palsy: A review. BRAIN SCIENCE ADVANCES 2020. [DOI: 10.26599/bsa.2020.9050002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
Deep brain stimulation (DBS) has been used as a safe and effective neuromodulation technique for treatment of various diseases. A large number of patients suffering from movement disorders such as dyskinesia may benefit from DBS. Cerebral palsy (CP) is a group of permanent disorders mainly involving motor impairment, and medical interventions are usually unsatisfactory or temporarily active, especially for dyskinetic CP. DBS may be another approach to the treatment of CP. In this review we discuss the targets for DBS and the mechanisms of action for the treatment of CP, and focus on presurgical assessment, efficacy for dystonia and other symptoms, safety, and risks.
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Affiliation(s)
- Hongjie Jiang
- Department of Neurosurgery, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China
| | - Rui Wang
- Department of Neurosurgery, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China
| | - Zhe Zheng
- Department of Neurosurgery, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China
| | - Junming Zhu
- Department of Neurosurgery, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China
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Marks WA, Acord S, Bailey L, Honeycutt J. Neuromodulation in Childhood Onset Dystonia: Evolving Role of Deep Brain Stimulation. CURRENT PHYSICAL MEDICINE AND REHABILITATION REPORTS 2020. [DOI: 10.1007/s40141-020-00258-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Tai CH, Hwu WL, Wu RM, Tseng SH. Modified Frameless Stereotactic System for Intracerebral Delivery of Viral Vector in Young Children. Oper Neurosurg (Hagerstown) 2020; 18:166-174. [PMID: 31214706 DOI: 10.1093/ons/opz119] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Accepted: 01/21/2019] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND Stereotaxic surgery for viral vector delivery in young children is highly challenging because of their small cranial size, thin and fragile skull, and deformity of the skull or brain after prolonged bed ridden condition. OBJECTIVE To develop a modified frameless stereotactic system especially suitable for intracerebral delivery of viral vector in young children for accurate localization of intracerebral targets during stereotactic surgery. METHODS A modified frameless stereotactic system was developed for intracerebral delivery of viral vector in pediatric patients with congenital enzyme deficiency. Localization markers and a stereotactic stabilizer were designed specifically for surgery in pediatric patients, and this equipment is used along with a pre-existing frameless stereotactic and computer-assisted planning and navigation system. RESULTS We applied this modified frameless stereotactic system to treat 10 children with aromatic L-amino acid decarboxylase deficiency. CONCLUSION It is potentially suitable for stereotactic functional neurosurgery in pediatric patients as young as 1 yr and 8 mo of age.
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Affiliation(s)
- Chun-Hwei Tai
- Department of Neurology, College of Medicine, National Taiwan Univeristy, Taipei, Taiwan.,Centre of Parkinson and Movement Disorders, Department of Neurology, National Taiwan University Hospital, Taipei, Taiwan
| | - Wu-Lian Hwu
- Department of Medical Genetics, National Taiwan University Hospital, Taipei, Taiwan
| | - Ruey-Meei Wu
- Department of Neurology, College of Medicine, National Taiwan Univeristy, Taipei, Taiwan.,Centre of Parkinson and Movement Disorders, Department of Neurology, National Taiwan University Hospital, Taipei, Taiwan
| | - Sheng-Hong Tseng
- Department of Surgery, National Taiwan University Hospital, Taipei, Taiwan
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8
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Barcala L, Politti F, Artilheiro MC, Speciali DS, Garbelotti SA, Correa JCF, Lucareli PRG. Adult dyskinetic cerebral palsy: Upper limb movement and muscle function. Acta Neurol Scand 2019; 139:505-511. [PMID: 30810219 DOI: 10.1111/ane.13083] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2018] [Revised: 02/06/2019] [Accepted: 02/20/2019] [Indexed: 02/01/2023]
Abstract
AIM The aim of this study was to characterize upper limb motor function during a comparative analysis of electromyographic and upper limb movement analysis during drinking between healthy adults and individuals with DCP. METHOD Fifteen healthy individuals (CG) and fifteen individuals with DCP (DG) participated in the study. Upper limb function was analyzed during drinking and consisted of a task divided into three phases: the going, the adjustment, and the return. RESULTS Electromyographic analysis revealed a lower activity of the anterior deltoid, posterior deltoid, and biceps brachii muscles in the DG. When comparing the interactions between groups and phases, only biceps brachii shower lower muscle activity during going and adjustment phases. The DG presented a smaller range of motion (ROM) for the shoulder, elbow, forearm and wrist movements. An interaction between groups and phases showed smaller ROM for the flexion and internal rotation of the shoulder, elbow flexion, forearm pronation, and ulnar deviation in the return phase compared to CG. INTERPRETATION The results may contribute positively to the quantification of the level of motor impairment and may be used as a reference for the development of therapeutic interventions for patients with DCP.
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Affiliation(s)
- Luciana Barcala
- Human Motion Analysis Laboratory, Department of Rehabilitation Science Universidade Nove de Julho São Paulo Brazil
| | - Fabiano Politti
- Human Motion Analysis Laboratory, Department of Rehabilitation Science Universidade Nove de Julho São Paulo Brazil
| | - Mariana C. Artilheiro
- Human Motion Analysis Laboratory, Department of Rehabilitation Science Universidade Nove de Julho São Paulo Brazil
| | - Danielli S. Speciali
- Human Motion Analysis Laboratory, Department of Rehabilitation Science Universidade Nove de Julho São Paulo Brazil
- Human Movement Analysis Laboratory Albert Einstein Hospital São Paulo Brazil
| | - Silvio A. Garbelotti
- Department of Physical Therapy Universidade Cidade de São Paulo São Paulo Brazil
| | - João C. F. Correa
- Human Motion Analysis Laboratory, Department of Rehabilitation Science Universidade Nove de Julho São Paulo Brazil
| | - Paulo R. G. Lucareli
- Human Motion Analysis Laboratory, Department of Rehabilitation Science Universidade Nove de Julho São Paulo Brazil
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Cernera S, Okun MS, Gunduz A. A Review of Cognitive Outcomes Across Movement Disorder Patients Undergoing Deep Brain Stimulation. Front Neurol 2019; 10:419. [PMID: 31133956 PMCID: PMC6514131 DOI: 10.3389/fneur.2019.00419] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Accepted: 04/05/2019] [Indexed: 12/19/2022] Open
Abstract
Introduction: Although the benefit in motor symptoms for well-selected patients with deep brain stimulation (DBS) has been established, cognitive declines associated with DBS can produce suboptimal clinical responses. Small decrements in cognition can lead to profound effects on quality of life. The growth of indications, the expansion of surgical targets, the increasing complexity of devices, and recent changes in stimulation paradigms have all collectively drawn attention to the need for re-evaluation of DBS related cognitive outcomes. Methods: To address the impact of cognitive changes following DBS, we performed a literature review using PubMed. We searched for articles focused on DBS and cognition. We extracted information about the disease, target, number of patients, assessment of time points, cognitive battery, and clinical outcomes. Diseases included were dystonia, Tourette syndrome (TS), essential tremor (ET), and Parkinson's disease (PD). Results: DBS was associated with mild cognitive issues even when rigorous patient selection was employed. Dystonia studies reported stable or improved cognitive scores, however one study using reliable change indices indicated decrements in sustained attention. Additionally, DBS outcomes were convoluted with changes in medication dose, alleviation of motor symptoms, and learning effects. In the largest, prospective TS study, an improvement in attentional skills was noted, whereas smaller studies reported variable declines across several cognitive domains. Although, most studies reported stable cognitive outcomes. ET studies largely demonstrated deficits in verbal fluency, which had variable responses depending on stimulation setting. Recently, studies have focused beyond the ventral intermediate nucleus, including the post-subthalamic area and zona incerta. For PD, the cognitive results were heterogeneous, although deficits in verbal fluency were consistent and related to the micro-lesion effect. Conclusion: Post-DBS cognitive issues can impact both motor and quality of life outcomes. The underlying pathophysiology of cognitive changes post-DBS and the identification of pathways underpinning declines will require further investigation. Future studies should employ careful methodological designs. Patient specific analyses will be helpful to differentiate the effects of medications, DBS and the underlying disease state, including disease progression. Disease progression is often an underappreciated factor that is important to post-DBS cognitive issues.
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Affiliation(s)
- Stephanie Cernera
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, FL, United States
| | - Michael S Okun
- Department of Neurology, Fixel Institute for Neurological Diseases, University of Florida College of Medicine and McKnight Brain Institute, Gainesville, FL, United States
| | - Aysegul Gunduz
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, FL, United States.,Department of Neurology, Fixel Institute for Neurological Diseases, University of Florida College of Medicine and McKnight Brain Institute, Gainesville, FL, United States
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10
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Coenen MA, Eggink H, Tijssen MA, Spikman JM. Cognition in childhood dystonia: a systematic review. Dev Med Child Neurol 2018; 60:244-255. [PMID: 29238959 DOI: 10.1111/dmcn.13632] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/20/2017] [Indexed: 11/29/2022]
Abstract
AIM Cognitive impairments have been established as part of the non-motor phenomenology of adult dystonia. In childhood dystonia, the extent of cognitive impairments is less clear. This systematic review aims to present an overview of the existing literature to elucidate the cognitive profile of primary and secondary childhood dystonia. METHOD Studies focusing on cognition in childhood dystonia were searched in MEDLINE and PsychInfo up to October 2017. We included studies on idiopathic and genetic forms of dystonia as well as dystonia secondary to cerebral palsy and inborn errors of metabolism. RESULTS Thirty-four studies of the initial 527 were included. Studies for primary dystonia showed intact cognition and IQ, but mild working memory and processing speed deficits. Studies on secondary dystonia showed more pronounced cognitive deficits and lower IQ scores with frequent intellectual disability. Data are missing for attention, language, and executive functioning. INTERPRETATION This systematic review shows possible cognitive impairments in childhood dystonia. The severity of cognitive impairment seems to intensify with increasing neurological abnormalities. However, the available data on cognition in childhood dystonia are very limited and not all domains have been investigated yet. This underlines the need for future research using standardized neuropsychological procedures in this group. WHAT THIS PAPER ADDS There is limited data on cognition in childhood dystonia. Primary dystonia showed intact cognition and IQ, but mild working memory and processing speed deficits. Secondary dystonia showed more pronounced deficits and lower IQ, with frequent intellectual disability. There is a strong need for case-control studies assessing cognition using standardized neuropsychological tests.
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Affiliation(s)
- Maraike A Coenen
- Department of Neurology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Hendriekje Eggink
- Department of Neurology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Marina A Tijssen
- Department of Neurology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Jacoba M Spikman
- Department of Neurology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
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11
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Adegboye D. Non-motor symptoms in childhood dystonia? New perspectives. Dev Med Child Neurol 2018; 60:216. [PMID: 29283189 DOI: 10.1111/dmcn.13661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Cognitive functioning in dyskinetic cerebral palsy: Its relation to motor function, communication and epilepsy. Eur J Paediatr Neurol 2018; 22:102-112. [PMID: 29108712 DOI: 10.1016/j.ejpn.2017.10.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Revised: 07/25/2017] [Accepted: 10/15/2017] [Indexed: 12/23/2022]
Abstract
BACKGROUND Cerebral palsy (CP) is a disorder of motor function often accompanied by cognitive impairment. There is a paucity of research focused on cognition in dyskinetic CP and on the potential effect of related factors. AIM To describe the cognitive profile in dyskinetic CP and to assess its relationship with motor function and associated impairments. METHOD Fifty-two subjects with dyskinetic CP (28 males, mean age 24 y 10 mo, SD 13 y) and 52 typically-developing controls (age- and gender-matched) completed a comprehensive neuropsychological assessment. Gross Motor Function Classification System (GMFCS), Communication Function Classification System (CFCS) and epilepsy were recorded. Cognitive performance was compared between control and CP groups, also according different levels of GMFCS. The relationship between cognition, CFCS and epilepsy was examined through partial correlation coefficients, controlling for GMFCS. RESULTS Dyskinetic CP participants performed worse than controls on all cognitive functions except for verbal memory. Milder cases (GMFCS I) only showed impairment in attention, visuoperception and visual memory. Participants with GMFCS II-III also showed impairment in language-related functions. Severe cases (GMFCS IV-V) showed impairment in intelligence and all specific cognitive functions but verbal memory. CFCS was associated with performance in receptive language functions. Epilepsy was related to performance in intelligence, visuospatial abilities, visual memory, grammar comprehension and learning. CONCLUSION Cognitive performance in dyskinetic CP varies with the different levels of motor impairment, with more cognitive functions impaired as motor severity increases. This study also demonstrates the relationship between communication and epilepsy and cognitive functioning, even controlling for the effect of motor severity.
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Jahanshahi M. Neuropsychological and Neuropsychiatric Features of Idiopathic and DYT1 Dystonia and the Impact of Medical and Surgical treatment. Arch Clin Neuropsychol 2017; 32:888-905. [DOI: 10.1093/arclin/acx095] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Indexed: 11/14/2022] Open
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Roy HA, Green AL, Aziz TZ. State of the Art: Novel Applications for Deep Brain Stimulation. Neuromodulation 2017; 21:126-134. [DOI: 10.1111/ner.12604] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Revised: 02/19/2017] [Accepted: 03/11/2017] [Indexed: 02/06/2023]
Affiliation(s)
- Holly A. Roy
- Nuffield Department of Surgical Sciences; Oxford University; Oxford UK
- Neurosurgery Department; Oxford University Hospitals; Oxford UK
| | - Alexander L. Green
- Nuffield Department of Surgical Sciences; Oxford University; Oxford UK
- Neurosurgery Department; Oxford University Hospitals; Oxford UK
| | - Tipu Z. Aziz
- Nuffield Department of Surgical Sciences; Oxford University; Oxford UK
- Neurosurgery Department; Oxford University Hospitals; Oxford UK
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15
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Bilateral globus pallidus internus deep brain stimulation for dyskinetic cerebral palsy supports success of cochlear implantation in a 5-year old ex-24 week preterm twin with absent cerebellar hemispheres. Eur J Paediatr Neurol 2017; 21:202-213. [PMID: 28017556 DOI: 10.1016/j.ejpn.2016.11.017] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2016] [Revised: 11/30/2016] [Accepted: 11/30/2016] [Indexed: 01/20/2023]
Abstract
BACKGROUND Early onset dystonia (dyskinesia) and deafness in childhood pose significant challenges for children and carers and are the cause of multiple disability. It is particularly tragic when the child cannot make use of early cochlear implantation (CI) technology to relieve deafness and improve language and communication, because severe cervical and truncal dystonia brushes off the magnetic amplifier behind the ears. Bilateral globus pallidus internus (GPi) deep brain stimulation (DBS) neuromodulation can reduce dyskinesia, thus supporting CI neuromodulation success. METHODS We describe the importance of the order of dual neuromodulation surgery for dystonia and deafness. First with bilateral GPi DBS using a rechargeable ACTIVA-RC neurostimulator followed 5 months later by unilateral CI with a Harmony (BTE) Advanced Bionics Hi Res 90 K cochlear device. This double neuromodulation was performed in series in a 12.5 kg 5 year-old ex-24 week gestation-born twin without a cerebellum. RESULTS Relief of dyskinesia enabled continuous use of the CI amplifier. Language understanding and communication improved. Dystonic storms abated. Tolerance of sitting increased with emergence of manual function. Status dystonicus ensued 10 days after ACTIVA-RC removal for infection-erosion at 3 years and 10 months. He required intensive care and DBS re-implantation 3 weeks later together with 8 months of hospital care. Today he is virtually back to the level of functioning before the DBS removal in 2012 and background medication continues to be slowly weaned. CONCLUSION This case illustrates that early neuromodulation with DBS for dystonic cerebral palsy followed by CI for deafness is beneficial. Both should be considered early i.e. under the age of five years. The DBS should precede the CI to maximise dystonia reduction and thus benefits from CI. This requires close working between the paediatric DBS and CI services.
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Hudson VE, Elniel A, Ughratdar I, Zebian B, Selway R, Lin JP. A comparative historical and demographic study of the neuromodulation management techniques of deep brain stimulation for dystonia and cochlear implantation for sensorineural deafness in children. Eur J Paediatr Neurol 2017; 21:122-135. [PMID: 27562095 DOI: 10.1016/j.ejpn.2016.07.018] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Revised: 07/15/2016] [Accepted: 07/20/2016] [Indexed: 12/19/2022]
Abstract
UNLABELLED Cochlear implants for sensorineural deafness in children is one of the most successful neuromodulation techniques known to relieve early chronic neurodisability, improving activity and participation. In 2012 there were 324,000 recipients of cochlear implants globally. AIM To compare cochlear implant (CI) neuromodulation with deep brain stimulation (DBS) for dystonia in childhood and explore relations between age and duration of symptoms at implantation and outcome. METHODS Comparison of published annual UK CI figures for 1985-2009 with a retrospective cohort of the first 9 years of DBS for dystonia in children at a single-site Functional Neurosurgery unit from 2006 to 14. RESULTS From 2006 to 14, DBS neuromodulation of childhood dystonia increased by a factor of 3.8 to a total of 126 cases over the first 9 years, similar to the growth in cochlear implants which increased by a factor of 4.1 over a similar period in the 1980s rising to 527 children in 2009. The CI saw a dramatic shift in practice from implantation at >5 years of age at the start of the programme towards earlier implantation by the mid-1990s. Best language results were seen for implantation <5 years of age and duration of cochlear neuromodulation >4 years, hence implantation <1 year of age, indicating that severely deaf, pre-lingual children could benefit from cochlear neuromodulation if implanted early. Similar to initial CI use, the majority of children receiving DBS for dystonia in the first 9 years were 5-15 years of age, when the proportion of life lived with dystonia exceeds 90% thus limiting benefits. CONCLUSION Early DBS neuromodulation for acquired motor disorders should be explored to maximise the benefits of dystonia reduction in a period of maximal developmental plasticity before the onset of disability. Learning from cochlear implantation, DBS can become an accepted management option in children under the age of 5 years who have a reduced proportion of life lived with dystonia, and not viewed as a last resort reserved for only the most severe cases where benefits may be at their most limited.
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Affiliation(s)
- V E Hudson
- Guys', King's and St Thomas' School of Medical Education, United Kingdom.
| | - A Elniel
- Guys', King's and St Thomas' School of Medical Education, United Kingdom
| | | | - B Zebian
- King's College Hospital, United Kingdom
| | - R Selway
- King's College Hospital, United Kingdom
| | - J P Lin
- Evelina London Children's Hospital, United Kingdom.
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Lin JP, Nardocci N. Recognizing the Common Origins of Dystonia and the Development of Human Movement: A Manifesto of Unmet Needs in Isolated Childhood Dystonias. Front Neurol 2016; 7:226. [PMID: 28066314 PMCID: PMC5165260 DOI: 10.3389/fneur.2016.00226] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Accepted: 11/28/2016] [Indexed: 12/21/2022] Open
Abstract
Dystonia in childhood may be severely disabling and often unremitting and unrecognized. Considered a rare disorder, dystonic symptoms in childhood are pervasive in many conditions including disorders of developmental delay, cerebral palsy (CP), autism, neurometabolic, neuroinflammatory, and neurogenetic disorders. Collectively, there is a need to recognize the role of early postures and movements which characterize phases of normal fetal, infant, and child development as a backdrop to the many facets of dystonia in early childhood neurological disorders and to be aware of the developmental context of dystonic symptoms. The role of cocontraction is explored throughout infancy, childhood, young adulthood, and in the elderly. Under-recognition of pervasive dystonic disorders of childhood, including within CP is reviewed. Original descriptions of CP by Gowers are reviewed and contemporary physiological demonstrations are used to illustrate support for an interpretation of the tonic labyrinthine response as a manifestation of dystonia. Early recognition and molecular diagnosis of childhood dystonia where possible are desirable for appropriate clinical stratification and future precision medicine and functional neurosurgery where appropriate. A developmental neurobiological perspective could also be useful in exploring new clinical strategies for adult-onset dystonia disorders focusing on environmental and molecular interactions and systems behaviors.
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Affiliation(s)
| | - Nardo Nardocci
- Fondazione I.R.C.C.S. Istituto Neurologico Carlo Besta , Milano , Italy
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Koy A, Lin JP, Sanger TD, Marks WA, Mink JW, Timmermann L. Management of movement disorders in children – Authors’ reply. Lancet Neurol 2016; 15:1302-1303. [DOI: 10.1016/s1474-4422(16)30284-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Accepted: 10/18/2016] [Indexed: 11/30/2022]
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