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1.
Epileptic Disord ; 2024 Aug 16.
Artículo en Inglés | MEDLINE | ID: mdl-39150433

RESUMEN

In childhood drug-resistant focal epilepsy, the identification of a magnetic resonance imaging lesion significantly affects the management and prognosis, although it is often challenging. Herein we report the preliminary results of a modified MR sequence, in which both magnetization transfer and chemical shift selective preparation pulses are added to a 3D fast spin echo T1-weighted sequence to recognize focal cortical dysplasia. The scan time is short, and the images have expected uniform suppression of the background normal gray and white matter. We report four children with focal epilepsy, in whom the focal cortical and subcortical lesions are superiorly conspicuous on the aforementioned MR sequence compared to the high-resolution fluid-attenuated inversion recovery images obtained with typical epilepsy MR protocols.

2.
Epilepsia ; 63(4): 777-788, 2022 04.
Artículo en Inglés | MEDLINE | ID: mdl-35224721

RESUMEN

OBJECTIVE: We aimed to assess the reliability and validity of single-item global ratings (GR) of satisfaction with epilepsy surgery. METHODS: We recruited 240 patients from four centers in Canada and Sweden who underwent epilepsy surgery ≥1 year earlier. Participants completed a validated questionnaire on satisfaction with epilepsy surgery (the ESSQ-19), plus a single-item GR of satisfaction with epilepsy surgery twice, 4-6 weeks apart. They also completed validated questionnaires on quality of life, depression, health state utilities, epilepsy severity and disability, medical treatment satisfaction and social desirability. Test-retest reliability of the GR was assessed with the intra-class correlation coefficient (ICC). Construct and criterion validity were examined with polyserial correlations between the GR measure of satisfaction and validated questionnaires and with the ESSQ-19 summary score. Non-parametric rank tests evaluated levels of satisfaction, and ROC analysis assessed the ability of GRs to distinguish among clinically different patient groups. RESULTS: Median age and time since surgery were 42 years (IQR 32-54) and 5 years (IQR 2-8), respectively. The GR demonstrated good to excellent test-retest reliability (ICC = 0.76; 95% CI 0.67-0.84) and criterion validity (0.85; 95% CI 0.81-0.89), and moderate correlations in the expected direction with instruments assessing quality of life (0.59; 95% CI 0.51-0.63), health utilities (0.55; 95% CI 0.45-0.65), disability (-0.51; 95% CI -0.41, -0.61), depression (-0.48; 95% CI -0.38, -0.58), and epilepsy severity (-0.48; 95% CI -0.38, -0.58). As expected, correlations were lower for social desirability (0.40; 95% CI 0.28-0.52) and medical treatment satisfaction (0.33; 95% CI 0.21-0.45). The GR distinguished participants who were seizure-free (AUC 0.75; 95% CI 0.67-0.82), depressed (AUC 0.75; 95% CI 0.67-0.83), and self-rated as having more severe epilepsy (AUC 0.78; 95% CI 0.71-0.85) and being more disabled (AUC 0.82; 95% CI 0.74-0.90). SIGNIFICANCE: The GR of epilepsy surgery satisfaction showed good measurement properties, distinguished among clinically different patient groups, and appears well-suited for use in clinical practice and research.


Asunto(s)
Epilepsia , Satisfacción Personal , Epilepsia/cirugía , Humanos , Psicometría , Calidad de Vida , Reproducibilidad de los Resultados , Encuestas y Cuestionarios
3.
Ann Neurol ; 90(6): 927-939, 2021 12.
Artículo en Inglés | MEDLINE | ID: mdl-34590337

RESUMEN

OBJECTIVE: The aim was to compare the outcomes of subdural electrode (SDE) implantations versus stereotactic electroencephalography (SEEG), the 2 predominant methods of intracranial electroencephalography (iEEG) performed in difficult-to-localize drug-resistant focal epilepsy. METHODS: The Surgical Therapies Commission of the International League Against Epilepsy created an international registry of iEEG patients implanted between 2005 and 2019 with ≥1 year of follow-up. We used propensity score matching to control exposure selection bias and generate comparable cohorts. Study endpoints were: (1) likelihood of resection after iEEG; (2) seizure freedom at last follow-up; and (3) complications (composite of postoperative infection, symptomatic intracranial hemorrhage, or permanent neurological deficit). RESULTS: Ten study sites from 7 countries and 3 continents contributed 2,012 patients, including 1,468 (73%) eligible for analysis (526 SDE and 942 SEEG), of whom 988 (67%) underwent subsequent resection. Propensity score matching improved covariate balance between exposure groups for all analyses. Propensity-matched patients who underwent SDE had higher odds of subsequent resective surgery (odds ratio [OR] = 1.4, 95% confidence interval [CI] 1.05, 1.84) and higher odds of complications (OR = 2.24, 95% CI 1.34, 3.74; unadjusted: 9.6% after SDE vs 3.3% after SEEG). Odds of seizure freedom in propensity-matched resected patients were 1.66 times higher (95% CI 1.21, 2.26) for SEEG compared with SDE (unadjusted: 55% seizure free after SEEG-guided resections vs 41% after SDE). INTERPRETATION: In comparison to SEEG, SDE evaluations are more likely to lead to brain surgery in patients with drug-resistant epilepsy but have more surgical complications and lower probability of seizure freedom. This comparative-effectiveness study provides the highest feasible evidence level to guide decisions on iEEG. ANN NEUROL 2021;90:927-939.


Asunto(s)
Mapeo Encefálico/métodos , Electroencefalografía/métodos , Epilepsia/cirugía , Procedimientos Neuroquirúrgicos/métodos , Convulsiones/cirugía , Técnicas Estereotáxicas , Adulto , Electrodos Implantados , Femenino , Humanos , Masculino , Persona de Mediana Edad , Resultado del Tratamiento , Adulto Joven
4.
Epilepsia ; 62(9): 2103-2112, 2021 09.
Artículo en Inglés | MEDLINE | ID: mdl-34245019

RESUMEN

OBJECTIVE: The 19-item Epilepsy Surgery Satisfaction Questionnaire (ESSQ-19) is a validated and reliable post hoc means of assessing patient satisfaction with epilepsy surgery. Prediction models building on these data can be used to counsel patients. METHODS: The ESSQ-19 was derived and validated on 229 patients recruited from Canada and Sweden. We isolated 201 (88%) patients with complete clinical data for this analysis. These patients were adults (≥18 years old) who underwent epilepsy surgery 1 year or more prior to answering the questionnaire. We extracted each patient's ESSQ-19 score (scale is 0-100; 100 represents complete satisfaction) and relevant clinical variables that were standardized prior to the analysis. We used machine learning (linear kernel support vector regression [SVR]) to predict satisfaction and assessed performance using the R2 calculated following threefold cross-validation. Model parameters were ranked to infer the importance of each clinical variable to overall satisfaction with epilepsy surgery. RESULTS: Median age was 41 years (interquartile range [IQR] = 32-53), and 116 (57%) were female. Median ESSQ-19 global score was 68 (IQR = 59-75), and median time from surgery was 5.4 years (IQR = 2.0-8.9). Linear kernel SVR performed well following threefold cross-validation, with an R2 of .44 (95% confidence interval = .36-.52). Increasing satisfaction was associated with postoperative self-perceived quality of life, seizure freedom, and reductions in antiseizure medications. Self-perceived epilepsy disability, age, and increasing frequency of seizures that impair awareness were associated with reduced satisfaction. SIGNIFICANCE: Machine learning applied postoperatively to the ESSQ-19 can be used to predict surgical satisfaction. This algorithm, once externally validated, can be used in clinical settings by fixing immutable clinical characteristics and adjusting hypothesized postoperative variables, to counsel patients at an individual level on how satisfied they will be with differing surgical outcomes.


Asunto(s)
Epilepsia , Satisfacción Personal , Adolescente , Adulto , Epilepsia/cirugía , Femenino , Humanos , Aprendizaje Automático , Masculino , Satisfacción del Paciente , Calidad de Vida , Convulsiones , Encuestas y Cuestionarios , Resultado del Tratamiento
5.
Epilepsia ; 61(12): 2729-2738, 2020 12.
Artículo en Inglés | MEDLINE | ID: mdl-33063891

RESUMEN

OBJECTIVE: No validated tools exist to assess satisfaction with epilepsy surgery. We aimed to develop and validate a new measure of patient satisfaction with epilepsy surgery, the 19-item Epilepsy Surgery Satisfaction Questionnaire (ESSQ-19). METHODS: An initial 31-item measure was developed based on literature review, patient focus groups, thematic analysis, and Delphi panels. The questionnaire was administered twice, 4-6 weeks apart, to 229 adults (≥18 years old) who underwent epilepsy surgery ≥1 year earlier, at three centers in Canada and one in Sweden. Participants also completed seven validated questionnaires to assess construct validity. Exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) assessed the factorial structure of the questionnaire. Cronbach alpha and intraclass correlation coefficients (ICCs) assessed the internal consistency and test-retest reliability of the ESSQ-19. Spearman and polyserial correlations assessed construct validity. RESULTS: Median age of participants and time since surgery were 42 years (interquartile range [IQR] = 32-54) and 5 years (IQR = 2-8.75), respectively. EFA and CFA yielded 18 items that segregated into four domains (mean score [SD]), namely, seizure control (76.4 [25]), psychosocial functioning (67.3 [26]), surgical complications (84 [22]), and recovery from surgery (73 [24]), one global satisfaction item, and a summary global score (74 [21]). The domain and summary scores demonstrated good to excellent internal reliability (Cronbach ⍺ range = .84-.95) and test-retest reliability (ICC range = 0.71-0.85). Construct validity was supported by predicted correlations with other instruments. SIGNIFICANCE: The ESSQ-19 is a new, valid, and reliable measure of patient satisfaction with epilepsy surgery that can be used in clinical and research settings.


Asunto(s)
Epilepsia/cirugía , Satisfacción del Paciente , Adulto , Análisis Factorial , Femenino , Humanos , Masculino , Satisfacción del Paciente/estadística & datos numéricos , Reproducibilidad de los Resultados , Encuestas y Cuestionarios
6.
J Child Neurol ; 34(9): 517-529, 2019 08.
Artículo en Inglés | MEDLINE | ID: mdl-31066331

RESUMEN

Moyamoya disease is a chronic progressive cerebrovascular occlusive disease of the terminal portion of the internal carotid arteries associated with an acquired abnormal vascular network at the base of the brain, often leading to ischemic or hemorrhagic stroke. Moyamoya disease is a relatively common cause of pediatric stroke with a specific racial and well-identified clinical and imaging phenotype. Moyamoya disease is more prevalent in East Asian countries compared with other geographic regions with a higher incidence of familial cases and clinically more aggressive form. Moyamoya disease is one of the few causes of stroke that is amenable to effective surgical revascularization treatment. There are various surgical options available for revascularization, including the direct, indirect, or combined bypass techniques, each with variable responses. However, due to the heterogeneity of the diseases, different clinical course, geographical variables associated with the disease, and availability of a wide variety of surgical revascularization procedures, optimal selection of a surgical candidate and the surgical technique becomes challenging, particularly in the pediatric population. This brief review presents pertinent literature of clinical options for the diagnosis and surgical treatment of moyamoya disease in children.


Asunto(s)
Enfermedad de Moyamoya/cirugía , Niño , Humanos , Enfermedad de Moyamoya/diagnóstico , Procedimientos Neuroquirúrgicos , Accidente Cerebrovascular/diagnóstico , Accidente Cerebrovascular/etiología , Accidente Cerebrovascular/cirugía
7.
Epilepsy Res ; 148: 63-68, 2018 12.
Artículo en Inglés | MEDLINE | ID: mdl-30390542

RESUMEN

BACKGROUND: Epilepsy surgery is likely underutilised. Our goal was to study the utilisation of epilepsy surgery in the general population, using Canada as a model of a high-income country with universal medical coverage. METHODS: We systematically identified all epilepsy surgery centres in Canada that were active in 2015. A standardised questionnaire was completed by every centre. Descriptive statistics are reported. Comparisons were made to a 2003 survey of paediatric epilepsy surgery. RESULTS: Twelve adult and 11 paediatric epilepsy surgery centres were identified, performing a total of 456 and 206 surgical procedures, respectively, in 2015. Adult centres were in only six of 10 provinces; paediatric centres were in seven. Two thirds of adult centres and one third of paediatric centres were high-volume centres. Per capita volume per province varied between 7.0 and 20.5 therapeutic surgeries per million adult residents, and between 7.8 and 48.4 per million paediatric residents. Temporal lobe resections accounted for 59.8% and 33.5% of all adult and paediatric treatments, respectively. Eleven adult and nine paediatric centres possessed facilities to carry out intracranial investigations but only six and two, respectively, performed at least six intracranial implantations in 2015. There was a modest increase in the per capita number of paediatric surgeries between 2003 and 2015. CONCLUSIONS: There is dramatic inter-centre and interprovincial variability in the epilepsy services available and the type of surgical interventions performed with significant gaps identified in some regions. Our findings are pivotal for the future optimisation of care offered to this vulnerable patient population.


Asunto(s)
Epilepsia/epidemiología , Epilepsia/cirugía , Disparidades en Atención de Salud , Aceptación de la Atención de Salud , Adulto , Canadá/epidemiología , Niño , Humanos
8.
Indian J Pediatr ; 84(9): 662-669, 2017 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-28367615

RESUMEN

OBJECTIVE: To compare long-term neurodevelopmental and growth (NDG) outcomes at 3 y corrected gestational age (GA) in premature infants with grade ≥ III intraventricular hemorrhage (IVH) and post-hemorrhagic hydrocephalus who were treated with ventriculo-peritoneal shunt with those who were not treated with shunt. METHODS: In a retrospective cohort study, NDG outcomes were compared between preterm infants of <29 wk GA with IVH treated with shunt (IVHS) and IVH with no shunt (IVHNS). This was a single centre study. The primary outcome was moderate to severe cerebral palsy (CP). RESULTS: Of 1762 preterm infants who survived to discharge, 90 had grade ≥ III IVH. Infants in IVHS group had more grade IV IVH than IVHNS (p < 0.05). Seventy percent of the patients in IVHNS groups had no hydrocephalus. IVHS group had increased CP (76% vs. 30%; p 0.003), and higher odds of CP after controlling for GA and IVH grade [odds ratio (OR); 4.23 (1.38 to 13.00)]. Growth delay was not different between groups. CONCLUSIONS: Infants with IVHS are at increased risk of CP but not growth delay.


Asunto(s)
Hemorragia Cerebral Intraventricular/complicaciones , Hidrocefalia/etiología , Recien Nacido Extremadamente Prematuro , Derivación Ventriculoperitoneal , Parálisis Cerebral/etiología , Desarrollo Infantil , Femenino , Humanos , Hidrocefalia/terapia , Recien Nacido Extremadamente Prematuro/crecimiento & desarrollo , Recién Nacido , Enfermedades del Recién Nacido/terapia , Masculino , Estudios Retrospectivos
9.
Neurosurg Focus ; 41(3): E3, 2016 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-27581315

RESUMEN

OBJECTIVE The efficacy of endoscopic third ventriculostomy (ETV) for the treatment of pediatric hydrocephalus has been extensively reported in the literature. However, ETV-related long-term outcome data are lacking for the adult hydrocephalus population. The objective of the present study was to assess the role of ETV as a primary or secondary treatment for hydrocephalus in adults. METHODS The authors performed a retrospective chart review of all adult patients (age ≥ 18 years) with symptomatic hydrocephalus treated with ETV in Calgary, Canada, over a span of 20 years (1994-2014). Patients were dichotomized into a primary or secondary ETV cohort based on whether ETV was the initial treatment modality for the hydrocephalus or if other CSF diversion procedures had been previously attempted respectively. Primary outcomes were subjective patient-reported clinical improvement within 12 weeks of surgery and the need for any CSF diversion procedures after the initial ETV during the span of the study. Categorical and actuarial data analysis was done to compare the outcomes of the primary versus secondary ETV cohorts. RESULTS A total of 163 adult patients with symptomatic hydrocephalus treated with ETV were identified and followed over an average of 98.6 months (range 0.1-230.4 months). All patients presented with signs of intracranial hypertension or other neurological symptoms. The primary ETV group consisted of 112 patients, and the secondary ETV consisted of 51 patients who presented with failed ventriculoperitoneal (VP) shunts. After the initial ETV procedure, clinical improvement was reported more frequently by patients in the primary cohort (87%) relative to those in the secondary ETV cohort (65%, p = 0.001). Additionally, patients in the primary ETV group required fewer reoperations (p < 0.001), with cumulative ETV survival time favoring this primary ETV cohort over the course of the follow-up period (p < 0.001). Fifteen patients required repeat ETV, with all but one experiencing successful relief of symptoms. Patients in the secondary ETV cohort also had a higher incidence of complications, with one occurring in 8 patients (16%) compared with 2 in the primary ETV group (2%; p = 0.010), although most complications were minor. CONCLUSIONS ETV is an effective long-term treatment for selected adult patients with hydrocephalus. The overall ETV success rate when it was the primary treatment modality for adult hydrocephalus was approximately 87%, and 99% of patients experience symptomatic improvement after 2 ETVs. Patients in whom VP shunt surgery fails prior to an ETV have a 22% relative risk of ETV failure and an almost eightfold complication rate, although mostly minor, when compared with patients who undergo a primary ETV. Most ETV failures occur within the first 7 months of surgery in patients treated with primary ETV, but the time to failure is more prolonged in patients who present with failed previous shunts.


Asunto(s)
Hidrocefalia/diagnóstico , Hidrocefalia/cirugía , Neuroendoscopía/tendencias , Tercer Ventrículo/cirugía , Ventriculostomía/tendencias , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Canadá/epidemiología , Femenino , Estudios de Seguimiento , Humanos , Hidrocefalia/epidemiología , Masculino , Persona de Mediana Edad , Neuroendoscopía/métodos , Estudios Retrospectivos , Factores de Tiempo , Resultado del Tratamiento , Ventriculostomía/métodos , Adulto Joven
10.
Disabil Health J ; 8(2): 271-7, 2015 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-25578399

RESUMEN

BACKGROUND: Multiple Sclerosis (MS) is a chronic, progressive disease of the central nervous system with a high prevalence in Canada. While the disease course is highly variable, a significant portion of people with MS may spend more than 10 years living with severe disability, and many of those will eventually require full time institutional care. Despite the high personal and economic cost of this care, little is known about predictors of institutionalization. OBJECTIVE: The objective of this study was to identify predictors of institutionalization. METHODS: Longitudinal data from a university MS clinic database were extracted to explore nursing home placement over time of an urban subgroup. Cox regression analysis was performed with age of MS onset and sex, as well as baseline information obtained at the first MS clinic assessment: MS course, Kurtzke Expanded Disability Status Scale score, and functional system scores. RESULTS: Older age of onset (p = .019) and higher baseline scores in specific functional systems (cerebellar, bowel/bladder, brainstem, and cerebral/mental) were significant (p = .000, p = .000, p = .001, p = .000 respectively) predictors of nursing home placement. CONCLUSIONS: Patients with older age of MS onset and those with baseline impairment in specific functional systems (cerebellar, bowel/bladder, brainstem, and cerebral/mental) may be at higher risk for future institutionalization and should be assessed with particular care to determine potential avenues of support to minimize this.


Asunto(s)
Actividades Cotidianas , Personas con Discapacidad , Institucionalización , Esclerosis Múltiple , Casas de Salud , Índice de Severidad de la Enfermedad , Adulto , Factores de Edad , Encefalopatías/etiología , Canadá , Enfermedad Crónica , Evaluación de la Discapacidad , Progresión de la Enfermedad , Femenino , Humanos , Estudios Longitudinales , Masculino , Persona de Mediana Edad , Esclerosis Múltiple/complicaciones , Modelos de Riesgos Proporcionales , Análisis de Regresión , Riesgo , Población Urbana , Incontinencia Urinaria/etiología
11.
Can J Neurol Sci ; 41(6): 729-34, 2014 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-25391336

RESUMEN

BACKGROUND: Cognitive dysfunction is a common complaint associated with obstructive hydrocephalus. The purpose of this study was to determine the effect of endoscopic third ventriculostomy (ETV) on the neuropsychological outcome in patients presenting with cognitive decline and obstructive hydrocephalus. METHODS: A retrospective review of patients who underwent ETV at the University of Calgary and had both pre and post operative neuropsychological testing, was completed. Presenting clinical features, etiology of hydrocephalus and ventricle size utilizing frontal occipital horn ratio was obtained. Outcomes and complications of the ETV were recorded. Detailed measures of intelligence, attention and concentration, executive function, visual and verbal memory, language functions and fine motor skills were completed. Post treatment change was determined utilizing Reliable Change Index. RESULTS: A total of 13 patients were identified. Etiology of the hydrocephalus was aqueductal stenosis in 8 and tectal glioma in 4. The majority of patients (11 of 13, 85%) demonstrated cognitive dysfunction at the borderline (≤1 SD) or impairment level (≤1.5 SDs) in at least one domain. Nine patients (69%) showed reliable improvement in at least one cognitive domain. The greatest improvement was seen with visual memory (42%). One quarter to one third of patients demonstrated improvement on tests of intelligence quotient, verbal memory, attention and concentration, and executive function. Two patients declined in executive functioning. Ventricle size improved in eight patients. CONCLUSIONS: ETV is a safe effective procedure, capable of producing reliable improvements in cognitive dysfunction with hydrocephalus. Patients with cognitive complaints alone may benefit from ETV.


Asunto(s)
Trastornos del Conocimiento/psicología , Trastornos del Conocimiento/cirugía , Hidrocefalia/psicología , Hidrocefalia/cirugía , Tercer Ventrículo/cirugía , Ventriculostomía/métodos , Adolescente , Adulto , Anciano , Niño , Preescolar , Trastornos del Conocimiento/epidemiología , Femenino , Humanos , Hidrocefalia/epidemiología , Masculino , Persona de Mediana Edad , Pruebas Neuropsicológicas , Estudios Retrospectivos , Tercer Ventrículo/patología , Resultado del Tratamiento , Ventriculostomía/tendencias , Adulto Joven
12.
Mult Scler Int ; 2014: 545080, 2014.
Artículo en Inglés | MEDLINE | ID: mdl-24672728

RESUMEN

Background. A population-based prevalent cohort of 150 clinical definite multiple sclerosis (MS) cases (102 women; 48 men) ascertained on January 1, 1977, Saskatoon, Saskatchewan, was found to have a familial rate of MS as 17.3%. Objectives. To determine the occurrence of familial MS cases and the frequency of MS among the biological relatives of the study cohort. Methods. The search for new familial cases MS affected relatives continued for 35 years until 2012. The natural history of the disease of sporadic cases is compared with that of the familial cases. SPSS V19 and Kaplan-Meier survival analysis were used for data analysis. Results. Of the 150 unrelated MS patients, 49 cases (32.7%) (36 women and 13 men) were reported of having at least one family member with MS. There were a total of 86 affected relatives, 26 (30.2%) first-degree relatives, 15 (17.4%) second-degree relatives, 20 (23.3%) third-degree relatives, and 25 (29.1%) distant relatives. The average age of MS onset for men with sporadic MS was 33.9 (SD = 10) years and 27.6 (SD = 8.4) years for familial cases and 29.3 (SD = 8.3) years and 26.8 (SD = 8.5) years for women. Conclusion. This 35-year longitudinal natural history study reveals a high frequency of cases with family members developing MS and supports a genetic influence in the etiology of MS.

13.
Epilepsia ; 54(5): 840-7, 2013 May.
Artículo en Inglés | MEDLINE | ID: mdl-23551133

RESUMEN

PURPOSE: Underutilization of epilepsy surgery remains a major problem and is in part due to physicians' misconceptions about the risks associated with epilepsy surgery. The purpose of this study was to systematically review the literature on complications of focal epilepsy surgery. METHODS: A literature search was conducted using PubMed and Embase to identify studies examining epilepsy surgery complications. Abstract and full text review, along with data extraction, was done in duplicate. Minor medical and neurologic complications were defined as those that resolved completely within 3 months of surgery, whereas major complications persisted beyond that time frame. Descriptive statistics were used to report complication proportions. KEY FINDINGS: Invasive monitoring: Minor complications were reported in 7.7% of patients, whereas major complications were reported in only 0.6% of patients undergoing invasive monitoring. Resective surgery: Minor and major medical complications were reported in 5.1% and 1.5% of patients respectively, most common being cerebrospinal fluid (CSF) leak. Minor neurologic complications occurred in 10.9% of patients and were twice as frequent in children (11.2% vs. 5.5%). Minor visual field defects were most common (12.9%). Major neurologic complications were noted in 4.7% of patients, with the most common being major visual field defects (2.1% overall). Perioperative mortality was uncommon after epilepsy surgery, occurring in only 0.4% of temporal lobe patients (1.2%extratemporal). SIGNIFICANCE: The majority of complications after epilepsy surgery are minor or temporary as they tend to resolve completely. Major permanent neurologic complications remain uncommon. Mortality as a result of epilepsy surgery in the modern era is rare.


Asunto(s)
Electroencefalografía , Epilepsia/cirugía , Procedimientos Neuroquirúrgicos/efectos adversos , Complicaciones Posoperatorias/diagnóstico , Bases de Datos Factuales/estadística & datos numéricos , Humanos
14.
Neurology ; 79(11): 1084-93, 2012 Sep 11.
Artículo en Inglés | MEDLINE | ID: mdl-22895589

RESUMEN

OBJECTIVES: Despite evidence that epilepsy surgery is more effective than medical therapy, significant delays between seizure intractability and surgery exist. We aimed to develop a new Web-based methodology to assist physicians in identifying patients who might benefit from an epilepsy surgery evaluation. METHODS: The RAND/UCLA appropriateness method was used. Clinical scenarios were developed based on eligibility criteria from previously published surgical series. Thirteen national experts rated the scenarios for their appropriateness for an epilepsy surgery evaluation based on published evidence. All scenarios were rerated after a face-to-face meeting following a modified Delphi process. Appropriate scenarios were rerated for necessity to determine referral priority. RESULTS: Of the final 2646 scenarios, 20.6% (n = 544) were appropriate, 17.2% (n = 456) uncertain, and 61.5% (n = 1626) inappropriate for a surgical evaluation. Of the appropriate cases, 55.9% (n = 306) were rated as very high priority. Not attempting AED treatment was always rated as inappropriate for a referral. Trial of 2 AEDs was usually rated as appropriate unless seizure-free or not fully investigated Based on these data, a Web-based decision tool (www.epilepsycases.com) was created. CONCLUSIONS: Using the available evidence through 2008 and expert consensus, we developed a Web-based decision tool that provides a guide for determining candidacy for epilepsy surgery evaluations. The tool needs clinical validation, and will be updated and revised regularly. This rendition of the tool is most appropriate for those over age 12 years with focal epilepsy. The Rand/UCLA appropriate methodology might be considered in the development of guidelines in other areas of epilepsy care.


Asunto(s)
Encéfalo/cirugía , Toma de Decisiones , Epilepsia/cirugía , Internet , Procedimientos Neuroquirúrgicos , Consenso , Humanos
15.
Epilepsy Behav ; 23(4): 481-6, 2012 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-22386912

RESUMEN

RATIONALE: The purposes of this study were to 1) conduct a review of neuropsychological (NP) outcomes after epilepsy surgery for DNET and 2) present pre/post-surgical NP results from a series of children with DNET. METHODS: First, a systematic literature review was conducted with specific inclusion criteria. Second, a review of DNET surgical patients seen at two tertiary-care hospitals using reliable change methods of NP functioning was conducted. RESULTS: Of 300 citations retrieved, 7 studies met criteria. Studies reported low average to average pre-surgical IQ. Engel Class I outcome was approximately 85%. CASE SERIES: Thirteen children completed pre/post-surgical NP assessments. Pre-surgically, children demonstrated low average to average functioning. Post-surgically, few patients showed reliable change. One-third of children demonstrated psychological improvement. CONCLUSIONS: NP outcome following DNET has not been well-described. Children with DNET demonstrate low average to average NP functioning pre-surgically, good seizure outcome, and stable NP functioning post-surgically.


Asunto(s)
Trastornos del Conocimiento/cirugía , Epilepsia/cirugía , Neoplasias Neuroepiteliales/cirugía , Teratoma/cirugía , Adolescente , Niño , Preescolar , Trastornos del Conocimiento/etiología , Epilepsia/complicaciones , Femenino , Humanos , Masculino , Neoplasias Neuroepiteliales/complicaciones , Pruebas Neuropsicológicas , Pediatría , Estudios Retrospectivos , Teratoma/complicaciones , Resultado del Tratamiento
17.
Epilepsia ; 52(5): 857-69, 2011 May.
Artículo en Inglés | MEDLINE | ID: mdl-21426331

RESUMEN

PURPOSE: Epilepsy surgery is a safe surgical procedure, but it may be associated with cognitive changes. Estimates of the risk of decline in specific neuropsychological domains after epilepsy surgery would assist surgical decision making in clinical practice. The goal of this study was to conduct a systematic review to derive pooled estimates of the rate of losses and gains in neuropsychological functions after epilepsy surgery, using empirically based methods for quantifying cognitive change. METHODS: An extensive literature search using PubMed, EmBase, and the Cochrane database was conducted, yielding 5,061 articles on epilepsy surgery, with 193 on neuropsychological outcomes (IQ, memory, language, executive functioning, attention, and subjective cognitive changes). KEY FINDINGS: Of these, 23 met final eligibility criteria, with 22 studies involving temporal surgery only. Key aspects of inclusion criteria were N ≥ 20 and use of reliable change index or standardized regression-based change estimates. In addition to the proportion of patients experiencing losses and gains in each individual test, a single pooled estimate of gains and losses for each cognitive domain was derived using a random effects model. Weighted estimates indicated a risk to verbal memory with left-sided temporal surgery of 44%, twice as high as the rate for right-sided surgery (20%). Naming was reduced in 34% of left-sided temporal patients, with almost no patients with gains (4%). Pooled data on IQ, executive functioning, and attention indicated few patients show declines post surgery, but a substantial rate of improvement in verbal fluency with left-sided temporal surgery (27%) was found. Self-reported cognitive declines after epilepsy surgery were uncommon, and gains were reported in some domains where losses were found on objective tests (i.e., verbal memory and language). Variations in surgical techniques did not appear to have a large effect on cognitive outcomes, except for naming outcomes, which appeared better with more conservative resections. Sensitivity to postoperative changes differed across visual memory tests, but not verbal memory tests. Few conclusions could be made regarding cognitive risks and benefits of extratemporal epilepsy surgery, or of epilepsy surgery in children. SIGNIFICANCE: In sum, epilepsy surgery is associated with specific cognitive changes, but may also improve cognition in some patients. The results provide base rate estimates of expected cognitive gains and losses associated with epilepsy surgery that may prove useful in clinical settings.


Asunto(s)
Trastornos del Conocimiento/diagnóstico , Cognición/fisiología , Epilepsia/diagnóstico , Epilepsia/cirugía , Adolescente , Adulto , Factores de Edad , Niño , Trastornos del Conocimiento/epidemiología , Trastornos del Conocimiento/psicología , Epilepsia/psicología , Epilepsia del Lóbulo Temporal/cirugía , Lateralidad Funcional , Humanos , Metaanálisis como Asunto , Pruebas Neuropsicológicas/estadística & datos numéricos , Evaluación de Resultado en la Atención de Salud , Periodo Posoperatorio
18.
Neuro Oncol ; 12(7): 745-55, 2010 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-20388696

RESUMEN

Investigating the biology of oligodendroglioma and its characteristic combined deletion of chromosomal arms 1p and 19q, mediated by an unbalanced translocation, t(1;19)(q10;p10), has been hampered by the lack of cell lines that harbor these traits. We grew cells from 2 anaplastic oligodendrogliomas in serum-free conditions. Serial propagation and expansion led to the establishment of permanent cell lines that maintained the genetic signature of the parent oligodendrogliomas and displayed features of brain tumor stem cells in vitro. One line was established from a treatment-naïve tumor and the other from a temozolomide resistant recurrent tumor. These lines may be important tools for understanding the biology of oligodendrogliomas and the function of their defining genetic traits.


Asunto(s)
Neoplasias Encefálicas/genética , Cromosomas Humanos Par 19/genética , Cromosomas Humanos Par 1/genética , Oligodendroglioma/genética , Neoplasias Encefálicas/patología , Línea Celular Tumoral , Humanos , Oligodendroglioma/patología , Translocación Genética/genética
19.
Can J Neurol Sci ; 37(1): 28-35, 2010 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-20169770

RESUMEN

BACKGROUND: A population-based prevalent group of 150 clinical definite patients ascertained on 1 January 1977, in Saskatoon, Saskatchewan, was followed for 30 years. OBJECTIVES: To outline the clinical characteristics, determine the levels of disability at 15, 25, 35, 40, and 45 years after onset, to estimate the survival after onset and life expectancy. METHODS: Clinical records were maintained, and the cohort reviewed each decade for 30 years. The disability levels according to the Kurtzke Extended Disability Status Scale were recorded and survival times were estimated. SPSS and Kaplan-Meier methods were used for analysis. RESULTS: On prevalence day, 1 January 1977, there were 48 (32%) men and 102 (68%) women, with an average age of onset of 32.2 +/- 10 years and 28.4 +/- 8.6 years. The average duration of disease was 15.7 years. On 1 January 2007, 39 (26%) patients were living, 105 (70%) deceased, and 6 (4%) were missing The disability levels recorded in 1977 and 2007, at 15 and 45 years after onset, were mild (EDSS < or = 2.5), 33.3% and 8.0%; moderate (EDSS3-5.5), 17.3% and 2.7%; severe (EDSS6-7.5), 6.6% and 4.7%; maximum (EDSS8-9.5), 22.7% and 10.7%. The median survival time after onset was 33 (95% CI: 27.3-38.6) years for men and 38 (95% CI: 34.1-41.9) years for women. The median duration of life was 68.9 years for men and 69.5 years for women, and a decreased life expectancy of 7.7 and 12.8 years. CONCLUSIONS: Multiple sclerosis is a progressive neurological disorder and long-term survival is associated with moderate to severe disability and decreased life expectancy.


Asunto(s)
Personas con Discapacidad , Esclerosis Múltiple/complicaciones , Esclerosis Múltiple/mortalidad , Adulto , Factores de Edad , Evaluación de la Discapacidad , Femenino , Humanos , Estudios Longitudinales , Masculino , Persona de Mediana Edad , Esclerosis Múltiple/epidemiología , Vigilancia de la Población , Pronóstico , Estudios Retrospectivos , Saskatchewan/epidemiología , Índice de Severidad de la Enfermedad , Factores Sexuales , Análisis de Supervivencia
20.
J Neurosurg Pediatr ; 4(5): 467-74, 2009 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-19877782

RESUMEN

OBJECT: Over the past decade, the use of intraoperative MR (iMR) imaging in the pediatric neurosurgical population has become increasingly accepted as an innovative and important neurosurgical tool. The authors summarize their experience using a mobile 1.5-T iMR imaging unit with integrated neuronavigation with the goal of identifying procedures and/or pathologies in which the application of this technology changed the course of surgery or modified the operative strategy. METHODS: A database has been prospectively maintained for this patient population. The authors reviewed the hospital charts and imaging results for all patients in the database. This review revealed 105 neurosurgical procedures performed in 98 children (49 male and 49 female) between March 1998 and April 2008. Intradissection (ID) and/or quality assurance images were obtained at the discretion of the surgeon. RESULTS: The median age at surgery was 12 years (4 months-18 years). One hundred intracranial and 5 spinal procedures were performed; 22 of these procedures were performed for recurrent pathology. Surgical planning scans were obtained for 102 procedures, and neuronavigation was used in 93 patients. The greatest impact of iMR imaging was apparent in the 55 procedures to resect neoplastic lesions; ID scans were obtained in 49 of these procedures. Further surgery was performed in 49% of the procedures during which ID scans had been obtained. A smaller proportion of ID scans in the different cranial pathology groups (5 of 21 epilepsy cases, 4 of 9 vascular cases) resulted in further resections to meet the surgical goal of the surgeon. Two ID scans obtained during 5 procedures for the treatment of spinal disease did not lead to any change in surgery. Postoperative scans did not reveal any acute adverse events. There was 1 intraoperative adverse event in which a Greenberg retractor was inadvertently left on during ID scanning but was removed after the scout scans. CONCLUSIONS: The application of iMR imaging in the pediatric neurosurgical population allows, at minimum, the opportunity to perform less invasive surgical exposures. Its potential is greatest when its high-quality imaging ability is coupled with its superior neuronavigation capabilities, which permits tracking of the extent of resection of intracranial tumors and, to a lesser extent, other lesions during the surgical procedure.


Asunto(s)
Imagen por Resonancia Magnética/métodos , Monitoreo Intraoperatorio/métodos , Procedimientos Neuroquirúrgicos , Adolescente , Encéfalo/patología , Encéfalo/cirugía , Niño , Preescolar , Bases de Datos Factuales , Ambiente , Femenino , Humanos , Lactante , Imagen por Resonancia Magnética/efectos adversos , Masculino , Monitoreo Intraoperatorio/efectos adversos , Enfermedades del Sistema Nervioso/patología , Enfermedades del Sistema Nervioso/cirugía , Quirófanos , Estudios Prospectivos , Garantía de la Calidad de Atención de Salud , Reoperación , Resultado del Tratamiento
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