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1.
Can J Neurol Sci ; 50(s1): s17-s25, 2023 06.
Artículo en Inglés | MEDLINE | ID: mdl-37160675

RESUMEN

Geographic, social, political, and economic factors shape access to advanced neurotechnologies, yet little previous research has explored the barriers, enablers, and areas of opportunity for equitable and meaningful access for diverse patient communities across Canada. We applied a mixed-mode approach involving semi-structured interviews and rating scale questions to consult with 24 medical experts who are involved in the care of patients who undergo functional neurosurgery targeting the brain. Seven major themes emerged from the qualitative analysis: Health care system, Neurotechnology features, Patient demographics, Target condition features, Ethics, Upstream barriers and enablers, and Areas of opportunity. Descriptive statistics of the Likert-scale responses suggest that interviewees perceive a disparity between the imperative of access to advanced neurotechnologies for people living in rural and remote areas and the likelihood of achieving such access. The results depict a complex picture of access to functional neurosurgery in Canada with pockets of excellence and a motivation to improve the availability of care for vulnerable populations through the expansion of distributed care models, improved health care system efficiencies, increasing funding and support for patient travel, and increasing awareness about and advocacy for advanced neurotechnologies.


Asunto(s)
Encéfalo , Neurocirugia , Humanos , Canadá , Motivación , Procedimientos Neuroquirúrgicos
2.
J Med Ethics ; 49(2): 81-86, 2023 02.
Artículo en Inglés | MEDLINE | ID: mdl-34497143

RESUMEN

Electroencephalographic monitoring provides critical diagnostic and management information about patients with epilepsy and seizure mimics. Admission to an epilepsy monitoring unit (EMU) is the gold standard for such monitoring in major medical facilities worldwide. In many countries, access can be challenged by limited resources compared to need. Today, triaging admission to such units is generally approached by unwritten protocols that vary by institution. In the absence of explicit guidance, decisions can be ethically taxing and are easy to challenge. In an effort to address this gap, we propose a two-component approach to EMU triage that takes into account the unique landscape of epilepsy monitoring informed by triage literature from other areas of medicine. Through the strategic component, we focus on the EMU wait list management infrastructure at the institutional level. Through the principled component, we apply a combination of the ethical principles of prioritarianism, utilitarianism and justice to triage; and we use individual case examples to illustrate how they apply. The effective implementation of this approach to specific epilepsy centres will need to be customised to the nuances of different settings, including diverse practice patterns, patient populations and constraints on resource distribution, but the conceptual consolidation of its components can alleviate some of the pressures imposed by the complex decisions involved in EMU triage.


Asunto(s)
Epilepsia , Triaje , Humanos , Epilepsia/diagnóstico , Convulsiones/diagnóstico , Monitoreo Fisiológico , Hospitalización
3.
Epilepsia ; 63(9): 2338-2349, 2022 09.
Artículo en Inglés | MEDLINE | ID: mdl-35699675

RESUMEN

OBJECTIVE: Novel and minimally invasive neurotechnologies offer the potential to reduce the burden of epilepsy while avoiding the risks of conventional resective surgery. Few neurotechnologies have been tested in randomized controlled trials with pediatric populations, leaving clinicians to face decisions about whether to recommend these treatments with insufficient evidence about the relevant risks and benefits. This study specifically explores the preferences of clinicians for treating pediatric drug-resistant epilepsy (DRE) with novel neurotechnologies. METHODS: A discrete-choice experiment (DCE) was designed to elicit the preferences of clinicians with experience in treating children with DRE using novel neurotechnological interventions. The preferences for six key attributes used when making treatment decisions (chances of clinically significant improvement in seizures, major and minor risks from intervention, availability of evidence, financial burden for the family, and access to the intervention) were estimated using a conditional logit model. The estimates from this model were then used to predict the adoption of existing novel neurotechnological interventions. RESULTS: Sixty-eight clinicians completed the survey: 33 neurosurgeons, 28 neurologists, and 7 other clinicians. Most clinicians were working in the United States (74%), and the remainder (26%) in Canada. All attributes, apart from the nearest location with access to the intervention, influenced preferences significantly. The chance of clinically significant improvement in seizures was the most positive influence on clinician preferences, but low-quality evidence and a higher risk of major complications could offset these preferences. Of the existing neurotechnological interventions, vagus nerve stimulation was predicted to have the highest likelihood of adoption; deep brain stimulation had the lowest likelihood of adoption. SIGNIFICANCE: The preferences of clinicians are drive primarily by the likelihood of achieving seizure freedom for their patients, but preferences for an intervention are largely eradicated if only low quality of evidence supporting the intervention is available. Until better evidence supporting the use of potentially effective, novel neurotechnologies becomes available, clinicians are likely to prefer more established treatments.


Asunto(s)
Epilepsia Refractaria , Epilepsia , Estimulación del Nervio Vago , Niño , Conducta de Elección , Toma de Decisiones , Epilepsia Refractaria/terapia , Humanos , Convulsiones
4.
Neurosurg Focus ; 50(4): E11, 2021 04.
Artículo en Inglés | MEDLINE | ID: mdl-33794488

RESUMEN

OBJECTIVE: Hydrocephalus may be seen in patients with multisuture craniosynostosis and, less commonly, single-suture craniosynostosis. The optimal treatment for hydrocephalus in this population is unknown. In this study, the authors aimed to evaluate the success rate of ventriculoperitoneal shunt (VPS) treatment and endoscopic third ventriculostomy (ETV) both with and without choroid plexus cauterization (CPC) in patients with craniosynostosis. METHODS: Utilizing the Hydrocephalus Clinical Research Network (HCRN) Core Data Project (Registry), the authors identified all patients who underwent treatment for hydrocephalus associated with craniosynostosis. Descriptive statistics, demographics, and surgical outcomes were evaluated. RESULTS: In total, 42 patients underwent treatment for hydrocephalus associated with craniosynostosis. The median gestational age at birth was 39.0 weeks (IQR 38.0, 40.0); 55% were female and 60% were White. The median age at first craniosynostosis surgery was 0.6 years (IQR 0.3, 1.7), and at the first permanent hydrocephalus surgery it was 1.2 years (IQR 0.5, 2.5). Thirty-three patients (79%) had multiple different sutures fused, and 9 had a single suture: 3 unicoronal (7%), 3 sagittal (7%), 2 lambdoidal (5%), and 1 unknown (2%). Syndromes were identified in 38 patients (90%), with Crouzon syndrome being the most common (n = 16, 42%). Ten patients (28%) received permanent hydrocephalus surgery before the first craniosynostosis surgery. Twenty-eight patients (67%) underwent VPS treatment, with the remaining 14 (33%) undergoing ETV with or without CPC (ETV ± CPC). Within 12 months after initial hydrocephalus intervention, 14 patients (34%) required revision (8 VPS and 6 ETV ± CPC). At the most recent follow-up, 21 patients (50%) required a revision. The revision rate decreased as age increased. The overall infection rate was 5% (VPS 7%, 0% ETV ± CPC). CONCLUSIONS: This is the largest prospective study reported on children with craniosynostosis and hydrocephalus. Hydrocephalus in children with craniosynostosis most commonly occurs in syndromic patients and multisuture fusion. It is treated at varying ages; however, most patients undergo surgery for craniosynostosis prior to hydrocephalus treatment. While VPS treatment is performed more frequently, VPS and ETV are both reasonable options, with decreasing revision rates with increasing age, for the treatment of hydrocephalus associated with craniosynostosis.


Asunto(s)
Craneosinostosis , Hidrocefalia , Neuroendoscopía , Tercer Ventrículo , Niño , Craneosinostosis/cirugía , Femenino , Humanos , Hidrocefalia/cirugía , Lactante , Recién Nacido , Estudios Prospectivos , Sistema de Registros , Tercer Ventrículo/cirugía , Resultado del Tratamiento , Ventriculostomía
5.
Epilepsy Behav ; 111: 107200, 2020 10.
Artículo en Inglés | MEDLINE | ID: mdl-32544701

RESUMEN

OBJECTIVE: Media coverage of disorders and medical advancements can impact public perception regarding the riskiness, effectiveness, and accessibility of treatment options. We studied that coverage for epilepsy with a focus on surgical interventions and emerging neurotechnologies. METHODS: Epilepsy-related English language articles published through 2019 were retrieved from online International news media with a circulation of 80,000 or above. We used directed content analysis of news articles to code content into a priori categories both to identify salient themes and to characterize their valence. RESULTS: One hundred forty-six unique articles matched our search terms. Overall, there was a steady increase in epilepsy reporting over time, with a majority of articles published with a positive tone. Neuromodulation was the focus of over 50% of all the articles in the time points analyzed. Vagus nerve stimulation (VNS) and deep-brain stimulation (DBS) were discussed more prominently than other types of neurotechnological interventions; VNS was the neurotechnological focus in 39% of the pediatric articles; resective surgery was the focus in 34% of adult articles. Access, support, and epilepsy literacy were the central themes in the context of ethical, legal, and social issues. SIGNIFICANCE: News media can influence the trust that the public places in science and medicine, and by extension, influences health policy. As innovations in neurotechnology for epilepsy emerge, understanding of individual and societal values is essential to their beneficial evolution and translation to care.


Asunto(s)
Estimulación Encefálica Profunda/tendencias , Epilepsia/terapia , Alfabetización en Salud/tendencias , Política de Salud/tendencias , Medios de Comunicación de Masas/tendencias , Estimulación del Nervio Vago/tendencias , Adulto , Niño , Preescolar , Epilepsia/epidemiología , Femenino , Alfabetización en Salud/métodos , Humanos , Masculino , Estimulación del Nervio Vago/métodos
6.
Can J Neurol Sci ; 47(6): 785-792, 2020 11.
Artículo en Inglés | MEDLINE | ID: mdl-32493538

RESUMEN

BACKGROUND: Novel neurointerventions present innovative therapeutic approaches to a range of treatment-refractory disorders. We sought to characterize factors that inform and define translational readiness for first-in-human (FIH) neuromodulatory trials. METHODS: We used a two-part methodology involving a scoping review of the biomedical literature on the readiness of FIH trials for both neurological and non-neurological applications, and semi-structured interviews with stakeholders about decision-making for neuromodulation using magnetic resonance-guided focused ultrasound as a case example. RESULTS: One hundred and thirty factors relevant to FIH readiness were identified in the scoping review. Trial design, adequacy of preclinical evidence, and risk were ubiquitous across biotechnologies. Target organ, target function, and inadequacy of animal models were dominant in the neurointervention literature. Interview results on the relative importance of these factors reveal divergent values, priorities, and understandings both between patients and clinicians and between patients affected by different conditions. CONCLUSION: Readiness of neurotechnology for FIH trials is defined by a multitude of interacting factors that pertain to clinical and nonclinical priorities, perceptions, and values.


Asunto(s)
Neurotransmisores/uso terapéutico , Estimulación Eléctrica Transcutánea del Nervio , Animales , Humanos
7.
J Head Trauma Rehabil ; 34(2): 103-110, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-30045221

RESUMEN

OBJECTIVE: To examine the prevalence of cervical spine injuries among children and adolescents referred with suspected and diagnosed sports-related concussion (SRC); and evaluate the effect of cervical spine dysfunction (CSD) on physician-documented clinical recovery following SRC. SETTING: A multidisciplinary pediatric concussion program. PARTICIPANTS: A total of 266 patients (6-19 years) referred with suspected SRC. DESIGN: A retrospective cohort study. MAIN MEASURES: CSD defined as neurological symptoms localized to the cervical spine or the presence of neck pain, headache, or dizziness and abnormal cervical spine examination findings; physician-documented clinical recovery. RESULTS: One patient was diagnosed with a T1 compression fracture. Of the 246 patients diagnosed with SRC, 80 (32.5%) met the clinical criteria for CSD including 4 patients with central cord neuropraxia and 1 with a spinal cord injury without radiographic abnormality (SCIWORA). Excluding patients with central cord neuropraxia OR SCIWORA, patients with SRC with CSD took longer to achieve physician-documented clinical recovery (28.5 days vs 17 days, P < .0001) and were 3.95 times more likely to experience delayed physician-documented clinical recovery (>4 weeks postinjury) compared with those without CSD. CONCLUSIONS: Patients with suspected and diagnosed SRC can present with a wide spectrum of coincident cervical spine injuries. Cervical spine dysfunction may be a risk factor for delayed clinical recovery.


Asunto(s)
Traumatismos en Atletas/epidemiología , Conmoción Encefálica/epidemiología , Vértebras Cervicales/lesiones , Fracturas de la Columna Vertebral/diagnóstico , Adolescente , Vértebras Cervicales/diagnóstico por imagen , Niño , Estudios de Cohortes , Femenino , Fracturas por Compresión/diagnóstico , Fracturas por Compresión/epidemiología , Humanos , Imagen por Resonancia Magnética , Masculino , Recuperación de la Función , Derivación y Consulta/estadística & datos numéricos , Estudios Retrospectivos , Fracturas de la Columna Vertebral/epidemiología , Factores de Tiempo , Tomografía Computarizada por Rayos X , Adulto Joven
8.
Childs Nerv Syst ; 35(9): 1565-1570, 2019 09.
Artículo en Inglés | MEDLINE | ID: mdl-31172270

RESUMEN

INTRODUCTION: An interhypothalamic adhesion (IHA) is a gray mater-like band of tissue traversing across the third ventricle anterior to the mammillary bodies and is similar but distinct from an interthalamic adhesion. These rare anatomic anomalies can be detected with magnetic resonance imaging or, incidentally, during endoscopic ventricular surgery. METHODS: All cases of interhypothalamic adhesions visualized during endoscopic third ventriculotomy (ETV), outside of the myelomeningocele setting, were identified from two institutions. Retrospective chart and imaging reviews were conducted and compared to intraoperative videos and photos for all cases. IHA variables collected included the following size, location, multiplicity, and associated anatomic anomalies. RESULTS: Four cases of interhypothalamic adhesions were identified during ETV-all of which, either partially or completely, obscured access to the third ventricular floor. The IHAs in our cohort were duplicated in two patients, large (> 3 mm and severely obstructing access to the third ventricular floor) in three patients, and adherent to the floor of the third ventricle in three patients. All four patients had primary absence of the septum pellucidum. Previous reports found associations of IHAs with other congenital, particularly midline, abnormalities. The IHAs in our cohort affected the surgery in three of four cases including misdirecting the ventriculostomy and requiring retraction or division of the IHA. In no case was postoperative pituitary or hypothalamic dysfunction observed. CONCLUSIONS: Although interhypothalamic adhesions are rare, these anomalies must be recognized as they may hinder access to the third ventricular floor. IHAs may be large, multiple, or adherent to adjacent ventricular structures, they can misdirect or occlude the ventriculostomy or impart risk of bleeding and hypothalamic injury. Techniques for management of IHA include aborting the attempt, re-siting the ventriculostomy, or retracting or dividing the IHA, which enabled technically successful ETV in three of four patients in this series.


Asunto(s)
Hipotálamo/anomalías , Hipotálamo/diagnóstico por imagen , Hallazgos Incidentales , Neuroendoscopía/métodos , Tercer Ventrículo/cirugía , Ventriculostomía , Adulto , Femenino , Humanos , Lactante , Masculino , Estudios Retrospectivos , Tercer Ventrículo/diagnóstico por imagen
9.
Camb Q Healthc Ethics ; 28(3): 476-487, 2019 07.
Artículo en Inglés | MEDLINE | ID: mdl-31298194

RESUMEN

Open neural tube defects or myelomeningoceles are a common congenital condition caused by failure of closure of the neural tube early in gestation, leading to a number of neurologic sequelae including paralysis, hindbrain herniation, hydrocephalus and neurogenic bowel and bladder dysfunction. Traditionally, the condition was treated by closure of the defect postnatally but a recently completed randomized controlled trial of prenatal versus postnatal closure demonstrated improved neurologic outcomes in the prenatal closure group. Fetal surgery, or more precisely maternal-fetal surgery, raises a number of ethical issues that we address including who the patient is, informed consent, surgical innovation and equipoise as well maternal assumption of risk. As the procedure becomes more widely adopted into practice, we suggest close monitoring of new fetal surgery centers, in order to ensure that the positive results of the trial are maintained without increased risk to both the mother and fetus.


Asunto(s)
Feto/cirugía , Cirugía General/ética , Cirugía General/legislación & jurisprudencia , Meningomielocele/cirugía , Femenino , Humanos , Consentimiento Informado , Embarazo , Investigación
10.
Childs Nerv Syst ; 34(3): 535-540, 2018 03.
Artículo en Inglés | MEDLINE | ID: mdl-29067507

RESUMEN

INTRODUCTION: Transient cerebellar mutism has been well recognized in literature as a complication of posterior fossa tumor resection. It is marked by profound impairment of fluency, articulation, and modulation of speech, irritability and autistic features and typically resolves within days to months. Underlying pathophysiology is debated, but currently unknown. METHODS: We present a case of a child with similar clinical findings after cerebellitis, demonstration of diffuse cerebellar signal changes, swelling, and protruding tonsils at the level of foramen magnum. DISCUSSION: To support the hypothesis that this clinical syndrome may occur in a non-surgical context, we present a review of literature of non-surgical transient cerebellar mutism.


Asunto(s)
Enfermedades Cerebelosas/diagnóstico por imagen , Mutismo/diagnóstico por imagen , Complicaciones Posoperatorias/diagnóstico por imagen , Edema Encefálico/complicaciones , Edema Encefálico/diagnóstico por imagen , Enfermedades Cerebelosas/complicaciones , Niño , Femenino , Humanos , Imagen por Resonancia Magnética/métodos , Mutismo/etiología , Complicaciones Posoperatorias/etiología
11.
Pediatr Emerg Care ; 34(5): 330-333, 2018 May.
Artículo en Inglés | MEDLINE | ID: mdl-27261957

RESUMEN

OBJECTIVES: Pre-trauma center care is a critical component in severe pediatric traumatic brain injury (TBI). For geographically large trauma catchment areas, optimizing increased intracranial pressure (ICP) management may potentially improve outcomes. This retrospective study examined ICP management in nontrauma centers and during interfacility transport to the trauma center. METHODS: Charts from a pediatric level I trauma center were reviewed for admissions between 2008 and 2013. Patients with a Glasgow Coma Scale score of 8 or less, head Abbreviated Injury Scale score of 3 or higher, and requiring intubation at a nontrauma center were included. Exclusion criteria included head injury secondary to drowning, stroke, obstetrical complications, asphyxia, and afflicted head trauma (younger than 5 years). Trauma center charts contained coalesced data from first responders, nontrauma centers, and transport. RESULTS: Twenty-five patients (74%) had increased ICP upon admission at trauma center, 48% experienced ICPs greater than 20 cm H2O within 12 hours of admission, 12% required an urgent craniotomy, and 16% had herniation syndromes on neuroimaging. Pre-trauma center ICP management included osmotherapy and head-of-bed elevation. Sixty-four percent of patients with increased ICP at trauma center admission received pre-trauma center ICP management. CONCLUSIONS: Early increased ICP is a common presentation of severe pediatric TBI during pre-trauma center management. However, what constitutes optimal care remains unknown. Given the difficulties of diagnosing early increased ICP in this setting, prophylactic raising ICP-lowering strategies may be considered.


Asunto(s)
Lesiones Traumáticas del Encéfalo/terapia , Servicios Médicos de Urgencia/métodos , Hipertensión Intracraneal/terapia , Adolescente , Lesiones Traumáticas del Encéfalo/complicaciones , Canadá , Niño , Servicios Médicos de Urgencia/estadística & datos numéricos , Femenino , Humanos , Hipertensión Intracraneal/epidemiología , Hipertensión Intracraneal/etiología , Presión Intracraneal , Masculino , Sistema de Registros , Estudios Retrospectivos , Centros Traumatológicos
12.
Paediatr Child Health ; 23(7): e150-e155, 2018 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-30374224

RESUMEN

INTRODUCTION: Advances in perinatal care in the developed world have resulted in more children living into adulthood with complex chronic health conditions. Transition is a process to improve and maximize the functional status of adolescents via the provision of adequate and appropriate health services in adulthood. This process is frequently disjointed, fragmented and inconsistent and inadequate transition increases morbidity, hospital admissions and urgent interventions. Ten thousand children are diagnosed with hydrocephalus annually in North America. Most survive to adulthood yet there are few transitioning programs and little research data on successful programs for this population. METHODS: An email survey of paediatric neurosurgical centres in Canada was carried out to establish current transition practices and attitudes for adolescents with hydrocephalus. Data were analyzed descriptively. RESULTS: Eleven out of 12 centres responded. The age of transition ranged from 16 to 18 years. Four centres have access to a dedicated Adult Hydrocephalus Clinic. Referral practices vary between centres and we highlight inconsistencies in care to this cohort of patients in Canada. There is little satisfaction among neurosurgeons with current transition arrangements in Canada. Several suggestions were made on how to improve this process. CONCLUSION: We recommend research into the needs of patients with hydrocephalus in order to formalize appropriate standards for transitioning patients with a view to developing national guidelines to standardize the transition process. This will require input from patients, families and the wider medical and allied health professional groups.

13.
Can J Neurol Sci ; 44(1): 51-58, 2017 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-28004631

RESUMEN

BACKGROUND: Despite the critical role played by neurosurgeons in performing radiosurgery, neurosurgery residents in Canada have limited exposure to radiosurgery during their training. A survey of neurosurgery residents and faculty along with radiation oncology faculty was conducted to analyze perspectives regarding incorporating formal radiosurgery training into the neurosurgery residency curriculum Methods: An online survey platform was employed. Descriptive statistics were used to summarize center and respondent characteristics. Categorical variables were compared using odds ratios and corresponding 95% confidence intervals. The chi-squared test was utilized to assess statistical significance. A value of p<0.05 was considered significant Results: The response rate was 31% (119/381); 87% (102/119) of respondents were from the neurosurgical specialty and 13% (17/119) from radiation oncology. Some 46% of residents (18/40) were "very uncomfortable" with radiosurgery techniques, and 57% of faculty (42/73) believed that dedicated radiosurgery training would be beneficial though impractical. No respondents felt that "no training" would be beneficial. A total of 46% of residents (19/41) felt that this training would be beneficial and that time should be taken away from other rotations, if needed, while 58% of faculty (42/73) and 75% (28/41) of residents believed that either 1 or 1-3 months of time dedicated to training in radiosurgery would suffice Conclusions: Canadian neurosurgeons are actively involved in radiosurgery. Despite residents anticipating a greater role for radiosurgery in their future, they are uncomfortable with the practice. With the indications for radiosurgery expanding, this training gap can have serious adverse consequences for patients. Considerations regarding the incorporation and optimal duration of dedicated radiosurgery training into the Canadian neurosurgery residency curriculum are necessary.


Asunto(s)
Actitud del Personal de Salud , Internado y Residencia , Neurocirujanos/educación , Radiocirugia/educación , Canadá , Curriculum/estadística & datos numéricos , Femenino , Humanos , Masculino , Neurocirujanos/psicología , Sistemas en Línea , Encuestas y Cuestionarios , Factores de Tiempo
14.
Can J Neurol Sci ; 44(1): 24-34, 2017 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-27772532

RESUMEN

OBJECTIVES: To summarize the clinical characteristics and outcomes of pediatric sports-related concussion (SRC) patients who were evaluated and managed at a multidisciplinary pediatric concussion program and examine the healthcare resources and personnel required to meet the needs of this patient population. METHODS: We conducted a retrospective review of all pediatric SRC patients referred to the Pan Am Concussion Program from September 1st, 2013 to May 25th, 2015. Initial assessments and diagnoses were carried out by a single neurosurgeon. Return-to-Play decision-making was carried out by the multidisciplinary team. RESULTS: 604 patients, including 423 pediatric SRC patients were evaluated at the Pan Am Concussion Program during the study period. The mean age of study patients was 14.30 years (SD: 2.32, range 7-19 years); 252 (59.57%) were males. Hockey (182; 43.03%) and soccer (60; 14.18%) were the most commonly played sports at the time of injury. Overall, 294 (69.50%) of SRC patients met the clinical criteria for concussion recovery, while 75 (17.73%) were lost to follow-up, and 53 (12.53%) remained in active treatment at the end of the study period. The median duration of symptoms among the 261 acute SRC patients with complete follow-up was 23 days (IQR: 15, 36). Overall, 25.30% of pediatric SRC patients underwent at least one diagnostic imaging test and 32.62% received referral to another member of our multidisciplinary clinical team. CONCLUSION: Comprehensive care of pediatric SRC patients requires access to appropriate diagnostic resources and the multidisciplinary collaboration of experts with national and provincially-recognized training in TBI.


Asunto(s)
Traumatismos en Atletas/complicaciones , Conmoción Encefálica , Manejo de la Enfermedad , Adolescente , Traumatismos en Atletas/epidemiología , Conmoción Encefálica/epidemiología , Conmoción Encefálica/etiología , Conmoción Encefálica/terapia , Niño , Femenino , Humanos , Masculino , Organización Panamericana de la Salud , Estudios Retrospectivos
16.
Can J Neurol Sci ; 43(1): 82-6, 2016 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-26306863

RESUMEN

BACKGROUND: Gamma Knife (GK) radiosurgery for pediatric arteriovenous malformations (AVM) of the brain presents a non-invasive treatment option. We report our institutional experience with GK for pediatric AVMs. METHODS: We performed a retrospective review of all pediatric patients treated with GK for cerebral AVMs at our institution from November 2003 up to and including September 2014. Patient demographics, AVM characteristics, treatment parameters and AVM responses were recorded. RESULTS: Nineteen patients were treated, with 4 lost to follow-up. The mean age was 14.2 years (range. 7-18 years), with 10 being males (52.6%). The mean AVM diameter and volume were 2.68 cm and 3.10 cm3 respectively. The mean Spetzler-Martin (SM) and Pollock grades of the treated AVMs were 2.4 and 0.99 respectively. The mean follow-up was 62 months. All AVMs treated demonstrated a response on follow-up imaging. Nine of 15 (60.0%) patients displayed obliteration of their AVMs. Nine of 11 patients with a minimum of 3 years follow-up (81.8%) displayed obliteration, with SM and Pollock grades correlating to the chance of obliteration in this group. Two patients developed post-GK edema requiring short course dexamethasone therapy. No other major complications occurred. No permanent complications occurred. CONCLUSIONS: GK radiosurgery for pediatric AVMs offers a safe and effective treatment option, with low permanent complication rates during early follow-up.


Asunto(s)
Fístula Arteriovenosa/cirugía , Malformaciones Arteriovenosas Intracraneales/cirugía , Evaluación de Resultado en la Atención de Salud , Complicaciones Posoperatorias , Radiocirugia/métodos , Adolescente , Canadá , Niño , Estudios de Seguimiento , Humanos , Radiocirugia/efectos adversos , Estudios Retrospectivos
17.
Childs Nerv Syst ; 32(2): 269-80, 2016 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-26597682

RESUMEN

BACKGROUND: Thalamic gliomas are rare. The natural history is unpredictable, and the optimal management of these tumors in children is poorly defined. The aim was to identify outcomes, prognostic factors, and response to various modalities of treatment in a relatively large population of pediatric thalamic tumors from many centers within a fairly homogeneous health care system. METHODS: We performed a Canadian multicenter retrospective review of pediatric thalamic tumors presenting during the MRI era (1989-2012). Radiology and pathology were reviewed by central independent reviewers. Paraffin shavings for RNA extraction were taken and tested for fusion events involving KIAA1549:BRAF. Tumors were classified as unilateral or bithalamic based on their origin on imaging. Univariate and multivariate analyses on factors influencing survival were performed. RESULTS: Seventy-two thalamic tumors were identified from 11 institutions. Females represented 53% of the study population, and the mean age at presentation was 8.9 years. Sixty-two tumors were unilateral and 10 bithalamic. Unilateral tumors had a greater propensity to grow inferiorly towards the brainstem. These tumors were predominantly low grade in comparison to bithalamic tumors which were high-grade astrocytomas. The 5-year overall survival was 61 ± 13% for unithalamic tumors compared to 37 ± 32% for bithalamic tumors (p = 0.097). Multivariate analysis indicated tumor grade as the only significant prognostic factor for unithalamic tumors. Six unilateral tumors, all low grade, were BRAF fusion positive. CONCLUSION: Unilateral and bilateral thalamic tumors behave differently. Surgical resection is an appropriate treatment option in unilateral tumors, most of which are low grade, but outcome is not related to extent of resection (EOR). Bilateral thalamic tumors have a poorer prognosis, but the occasional patient does remarkably well. The efficacy of chemotherapy and radiotherapy has not been clearly demonstrated. Novel therapeutic approaches are required to improve the prognosis for malignant unilateral thalamic tumors and bilateral thalamic tumors.


Asunto(s)
Astrocitoma/terapia , Neoplasias Encefálicas/terapia , Ependimoma/terapia , Tálamo , Adolescente , Astrocitoma/diagnóstico , Astrocitoma/genética , Neoplasias Encefálicas/diagnóstico , Neoplasias Encefálicas/genética , Canadá , Quimioterapia Adyuvante , Niño , Preescolar , Ependimoma/diagnóstico , Ependimoma/genética , Femenino , Glioma/genética , Glioma/terapia , Humanos , Lactante , Estimación de Kaplan-Meier , Modelos Lineales , Imagen por Resonancia Magnética , Masculino , Análisis Multivariante , Procedimientos Neuroquirúrgicos , Proteínas de Fusión Oncogénica/genética , Pronóstico , Modelos de Riesgos Proporcionales , Radioterapia Adyuvante , Estudios Retrospectivos , Resultado del Tratamiento
18.
Neurosurg Focus ; 40(4): E8, 2016 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-27032925

RESUMEN

The decision to advise an athlete to retire from sports following sports-related concussion (SRC) remains a persistent challenge for physicians. In the absence of strong empirical evidence to support recommendations, clinical decision making must be individualized and should involve a multidisciplinary team of experts in concussion and traumatic brain injury. Although previous authors have advocated for a more conservative approach to these issues in child and adolescent athletes, there are few reports outlining considerations for this process among this unique population. Here, the authors use multiple case illustrations to discuss 3 subgroups of clinical considerations for sports retirement among pediatric SRC patients including the following: those with structural brain abnormalities identified on neuroimaging, those presenting with focal neurological deficits and abnormalities on physical examination, and those in whom the cumulative or prolonged effects of concussion are suspected or demonstrated. The authors' evolving multidisciplinary institutional approach to return-to-play and retirement decision making in pediatric SRC is also presented.


Asunto(s)
Traumatismos en Atletas/epidemiología , Conmoción Encefálica/diagnóstico , Toma de Decisiones/fisiología , Jubilación , Deportes , Adolescente , Conmoción Encefálica/fisiopatología , Humanos , Neuroimagen/métodos
19.
Can J Neurol Sci ; 42(1): 25-33, 2015 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-25573052

RESUMEN

BACKGROUND: Transitioning from medical school to residency is difficult and stressful, necessitating innovation in easing this transition. In response, a Canadian neurosurgical Rookie Camp was designed and implemented to foster acquisition of technical, cognitive and behavioral skills among incoming Canadian post graduate year one (PGY-1) neurosurgery residents. METHODS: The inaugural Rookie Camp was held in July 2012 in Halifax. The curriculum was developed based on a national needs-assessment and consisted of a pre-course manual, 7 case-based stations, 4 procedural skills stations and 2 group discussions. The content was clinically focused, used a variety of teaching methods, and addressed multiple CanMEDS competencies. Evaluation included participant and faculty surveys and a pre-course, post-course, and 3-month retention knowledge test. RESULTS: 17 of 23 PGY-1 Canadian neurosurgical residents participated in the Camp. All agreed the course content was relevant for PGY-1 training and the experience prepared them for residency. All participants would recommend the course to future neurosurgical residents. A statistically significant improvement was observed in knowledge related to course content (F(2,32) = 7.572, p<0.002). There were no significant differences between post-test and retention-test scores at three months. CONCLUSION: The inaugural Canadian Neurosurgery Rookie Camp for PGY-1 residents was successfully delivered, with engagement from participants, training programs, the Canadian Neurosurgical Society, and the Royal College. In addition to providing fundamental knowledge, which was shown to be retained, the course eased junior residents' transition to residency by fostering camaraderie and socialization within the specialty.


Asunto(s)
Educación de Postgrado en Medicina/métodos , Internado y Residencia , Neurocirugia/educación , Procedimientos Neuroquirúrgicos/métodos , Adulto , Canadá , Competencia Clínica/normas , Curriculum , Educación de Postgrado en Medicina/normas , Femenino , Humanos , Internado y Residencia/métodos , Internado y Residencia/normas , Conocimiento Psicológico de los Resultados , Masculino , Procedimientos Neuroquirúrgicos/normas
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