Clinical predictors of therapeutic failure of occipital nerve stimulation in refractory chronic cluster headache.

BACKGROUND: Occipital nerve stimulation (ONS) is a treatment with evidence in refractory chronic cluster headache (CCH). However, the variable response rate and cost make it necessary to investigate predictors of response. METHODS: This is a cross-sectional study conducted through the review of medical records of CCH patients from six hospitals in Madrid. Epidemiological and clinical variables were compared between patients with ONS failure and the rest. ONS failure was defined as the need for device withdrawal or switch off because of lack of response or adverse events. RESULTS: From a series of 88 CCH, 26 (29.6%) underwent ONS surgery, of whom 13/26 (50.0%) failed because lack of response. ONS failure group had an earlier headache onset (mean ± SD) of 27.7 ± 6.9 vs. 36.7 ± 11.8 years, p = 0.026) and a higher smoking rate (100% vs. 42.9%, p = 0.006). Stational fluctuations (58.3% vs. 7.7%, p = 0.007) and nocturnal exacerbations (91.7% vs. 53.9%, p = 0.035) were more frequent in the ONS failure group as well. There was no difference between groups in diagnostic delay, years of evolution prior to surgery, mental illness, comorbidity with other headache disorders or chronic pain conditions or prior response to occipital nerves anesthetic blocks. CONCLUSIONS: Some clinical features such as an early debut, smoking and seasonal or circadian fluctuations could be related to failure of ONS in refractory CCH.

A comparison study of cognitive deficits in radiologically and clinically isolated syndromes.

UNLABELLED: Up until now, no information has existed regarding a comparison of the pattern and frequency of cognitive deficits between radiologically isolated syndrome (RIS) and clinically isolated syndrome (CIS) patients. Within this objective, Rao's Brief Repeatable Battery and Stroop test were administered to 28 RIS patients, 25 CIS patients, and 22 healthy controls. CONCLUSIONS: The prevalence of cognitive deficits in RIS was similar to that of CIS. Cognitive deficits seem to be present in RIS patients regardless of the presence of risk factors for a future symptomatic demyelinating event.

Inter-Rater Agreement in the Clinical Diagnosis of Cognitive Status: Data from the Neurological Disorders in Central Spain 2 Pilot Study.

BACKGROUND: To assess the diagnostic agreement of cognitive status (dementia, mild cognitive impairment (MCI), normal cognition) among neurologists in the field of neurological disorders in Central Spain 2 study. METHODS: Full medical histories of 30 individuals were provided to 27 neurologists: 9 seniors, 10 juniors and 8 residents. For each case, we were asked to assign a diagnosis of dementia, MCI or normal cognition using the National Institute on Aging-Alzheimer's Association workgroup (NIA-AA) core clinical criteria for all-cause dementia, Winblad et al. criteria for MCI, and analyze intensity and etiology if dementia was diagnosed. Inter-rater agreement was assessed both with percent concordance and non-weighted κ statistics. RESULTS: Overall inter-rater agreement on cognitive status was κ = 0.76 (95% CI 0.65-0.86), being slightly higher among junior neurologists (κ = 0.85, 95% CI 0.73-0.95) than among seniors (κ = 0.71, 95% CI 0.59-0.83) and residents (κ = 0.69, 95% CI 0.54-0.81) but without statistical significance among groups. Dementia severity showed an overall κ of 0.34, 0.44 and 0.64 for mild, moderate and severe dementia respectively. CONCLUSIONS: Substantial agreement was demonstrated for the diagnosis of cognitive status (dementia, MCI and normal cognition) among neurologists of different levels of experience in a population-based epidemiological study using NIA-AA and Winblad et al. CRITERIA: The agreement rate was lower in the diagnosis of dementia severity.

Interventions to Foster Resilience in Family Caregivers of People with Alzheimer's Disease: A Scoping Review.

The family caregiver of a person with Alzheimer's disease still experiences, in most cases, negative consequences in their biopsychosocial environment, which are related to the acquisition of this role. However, it has been observed that this fact is not universal in this type of population since benefits can be obtained in the act of caring through the development of resilience. Given this possibility and given that nurses are the health professionals who support people in this illness process, there is an urgent need to identify which non-pharmacological interventions could improve or promote resilience in family caregivers of people with Alzheimer's disease. Therefore, our overall objective was to determine which interventions are useful in promoting resilience in family caregivers of people with Alzheimer's disease through a scoping review. The data were analysed using an adapted version of Arksey and O'Malley's methodological framework, after critically reading the articles with the CasP and MMAT tools. Nine articles were included (five analytical experimental, two quantitative and two mixed). Three types of interventions related to promoting resilience in family caregivers of people with Alzheimer's disease were identified: meditation, multicomponent psychoeducation and creative art; nurses participated as co-therapists in the last two.

The Promotion of Mental Health and Prevention of First-Episode Psychosis: A Pilot and Feasibility Non-Randomised Clinical Trial.

BACKGROUND: Mental-health-related stigma prevents active help seeking and therefore early therapeutic approaches and the recovery of functionality. National and international agencies recommend the implementation of prevention and mental health promotion programs that support the elimination of stigma in the classroom, since most mental health problems usually start in the adolescent stage. In view of the evidence that teachers present stigmatizing attitudes towards mental health, it has been considered as convenient to carry out an anti-stigma program with the main objective of evaluating the impact of an intervention based on the education and promotion of mental health, aimed at teachers and counsellors of a secondary school. The specific objectives were to get to know which were the most stigmatising attitudes that prevailed in the sample before and after the intervention; to evaluate the knowledge of the teaching staff and counsellors on psychosis before the intervention; to analyse correlations between clinically relevant variables; and assess whether this programme was beneficial and feasible for alphabetising counsellors/teachers of educational centres on stigma and FEP. METHODS: This was a non-randomised clinical trial in which a nursing intervention was performed. TOOLS: a psychosis test (pre), Stigma Attribution Questionnaire (AQ-27) (pre-post), and satisfaction survey (post) were used. The inferential analysis included the Wilcoxon and the Pearson Correlation Test. RESULTS: In the sample (n = 22), the predominant stigmatising attitude was "Help". The p-values obtained in the Wilcoxon Test were statistically significant, except for "Responsibility" and "Pity". The following constructs of interest were faced: "Fear"-"Age" and "Professional experience"; and "Help"-"Psychosis test". CONCLUSIONS: Despite the scores obtained in "Responsibility" and "Pity", the intervention was useful for reducing stigma in the sample. Implications for the profession: There are adolescents who have suffered stigma from their teachers, and consequently have minimized their symptoms and not asked for help. For this reason, we implemented a nursing intervention based on the education and promotion of mental health, with the aim of expanding knowledge and reducing stigma. In fact, this intervention, which we carried out on high school teachers, managed to reduce the majority of stigmatizing attitudes measured on the stigma attribution scale.

Three-Year Effectiveness of Dimethyl Fumarate in Multiple Sclerosis: A Prospective Multicenter Real-World Study.

BACKGROUND: Dimethyl fumarate (DMF) has demonstrated efficacy in phase III studies. However, real-world data are still limited. OBJECTIVE: The objective of this study was to describe the profile of patients who receive DMF and to assess the effectiveness of DMF regarding relapses, disability progression, magnetic resonance imaging activity, and NEDA (No Evidence Disease Activity)-3 status in a Spanish population in a real-world setting. METHODS: We conducted a multicenter prospective study of patients who started DMF between 2014 and 2019 in Spain. Three subgroups were considered: naïve, switch to DMF because of inefficacy, and switch to DMF because of adverse effects. The effects of DMF on clinical and radiological measures were evaluated. RESULTS: Among 886 patients, 25.3% were naïve, 28.8% switched because of adverse effects, and 45.9% because of inefficacy. Median follow-up was 38.9 (interquartile range 22.6-41.8) months. Annualized relapse rates were 0.15, 0.10, and 0.10 at 12, 24, and 36 months respectively, and 77.7% of patients were relapse free at month 42. At 12, 24, and 42 months, 96.1%, 87.4%, and 79.7% of patients were progression free, respectively. The number of T1 gadolinium-enhancement (T1Gd+) lesions was 0.19, 0.14, and 0.18 at 12, 24, and 36 months. NEDA-3 status at month 42 was maintained by 49.8% of patients. Relapsing was associated with higher annualized relapse rates the year before (hazard ratio 1.34, p < 0.001) and to the inefficacy switch vs naïve group (hazard ratio 1.76, p = 0.003). A higher baseline Expanded Disability Status Scale score was associated with disability progression (hazard ratio 1.15, p = 0.003) and more T1Gd+ lesions (hazard ratio 1.07, p < 0.001) with radiological progression. A higher baseline Expanded Disability Status Scale score, a larger number of T1Gd+ lesions, and a switch because of inefficacy (vs adverse events) were all risk factors for losing NEDA-3 status. DMF was discontinued in 29.9% of patients, in 13.5% because of inefficacy. CONCLUSIONS: Our findings confirm the sustained effectiveness of DMF on the clinical and radiological activity of multiple sclerosis in a real-world setting, both in naïve patients and in those switching from other multiple sclerosis therapies.

Tolerability and safety of dimethyl fumarate in relapsing multiple sclerosis: a prospective observational multicenter study in a real-life Spanish population.

BACKGROUND: Dimethyl fumarate (DMF) tolerability and safety in multiple sclerosis (MS) has been analyzed in randomized clinical trials. Real-life studies are needed to assess possible harms of this therapy in a wider MS population. OBJECTIVE: To evaluate DMF tolerability, safety and persistence in MS in a real-world setting. METHODS: We conducted a multicenter prospective study of patients who started DMF, attended in 16 public hospitals of Spain. A specific database was elaborated to collect data on most frequent adverse events (AE). Regression models were used to analyze the effect of demographic and clinical characteristics on risk of AEs and DMF discontinuation. RESULTS: We collected data of 886 patients (2681 patients/years-exposition) with median 39.5 (IQR 23, 51.5) months on DMF exposure; 25.3% were treatment naïve and 74.7% switched to DMF from other disease-modifying therapies. DMF was discontinued in 29.9% of patients, in 13.2% due to AEs and in 13.5% to inefficacy. AEs were experienced by 71.2%, being flushing the most frequent (44.1%), 5.4% developed grade III lymphopenia, without cases of grade IV. Females showed a higher risk of flushing and gastroenteric symptoms (OR 1.49, p = 0.011; OR 1.69, p = 0.001, respectively); lymphopenia was associated with older age (OR 1.04, p < 0.001), and a higher EDSS with lymphopenia (OR 1.10, p = 0.035) and DMF withdrawal (HR 1.43, p = 0.012). No safety problems were reported. CONCLUSIONS: Our findings confirm good tolerability and safety of DMF in real-world setting and suggest that women have an increased risk of AEs and higher baseline disability involves greater risk of drug discontinuation.

Normal-appearing brain tissue analysis in radiologically isolated syndrome using 3 T MRI.

To date, it remains largely unknown whether there is in radiologically isolated syndrome (RIS) brain damage beyond visible T2 white matter lesions. We used single- voxel proton magnetic resonance spectroscopy and diffusion tensor imaging (3 T MRI) to analyze normal-appearing brain tissue regions in 18 RIS patients and 18 matched healthy controls. T2-hyperintense lesion volumes and structural brain volumes were also measured. The absolute metabolite concentrations and ratios of total N-acetylaspartate+N-acetylaspartyl glutamate (NAA), choline-containing compounds, myoinositol, and glutamine-glutamate complex to creatine were calculated. Spectral analysis was performed by LCModel. Voxelwise morphometry analysis was performed to localize regions of brain tissue showing significant changes of fractional anisotropy or mean diffusivity. Compared with healthy controls, RIS patients did not show any significant differences in either the absolute concentration of NAA or NAA/Cr ratio in mid-parietal gray matter. A trend toward lower NAA concentrations (-3.35%) was observed among RIS patients with high risk for conversion to multiple sclerosis. No differences in the other metabolites or their ratios were observed. RIS patients showed lower fractional anisotropy only in clusters overlapping lesional areas, namely in the cingulate gyrus bilaterally and the frontal lobe subgyral bilaterally (P < 0.001). Normalized brain and cortical volumes were significantly lower in RIS patients than in controls (P = 0.01 and P = 0.03, respectively). Our results suggest that in RIS, global brain and cortical atrophy are not primarily driven by significant occult microstructural normal appearing brain damage. Longitudinal MRI studies are needed to better understand the pathological processes underlying this novel entity.

Gray Matter Involvement in Radiologically Isolated Syndrome.

The unanticipated magnetic resonance imaging (MRI) detection in the brain of asymptomatic subjects of white matter lesions suggestive of multiple sclerosis has recently been named as radiologically isolated syndrome (RIS). The pathophysiological processes of RIS remain largely unknown and questions as to whether gray matter alterations actually occur in this entity are yet to be investigated in more detail. By means of a 3 T multimodal MRI approach, we searched for cortical and deep gray matter changes in a cohort of RIS patients. Seventeen RIS patients, 17 clinically isolated syndrome (CIS) patients (median disease duration from symptom onset = 12 months), and 17 healthy controls underwent MRI and neuropsychological testing. Normalized deep gray matter volumes and regional cortical thickness were assessed using FreeSurfer. SIENAX was used to obtain normalized global and cortical brain volumes. Voxelwise morphometry analysis was performed by using SPM8 software to localize regions of brain tissue showing significant changes of fractional anisotropy or mean diffusivity. Although no differences were observed between CIS and healthy controls groups, RIS patients showed significantly lower normalized cortical volume (673 ±â€Š27.07 vs 641 ±â€Š35.88 [cm³â€Š× 10³, Tukey P test = 0.009) and mean thalamic volume (0.0051 ±â€Š0.4 vs 0.0046 ±â€Š0.4 mm, P = 0.014) compared with healthy controls. RIS patients also showed significant thinning in a number of cortical areas, that were primarily distributed in frontal and temporal lobes (P < 0.05, uncorrected). Strong correlations were observed between T2-white matter lesion volume and regional cortical thickness (rho spearman ranging from 0.60 to 0.80). Our data suggest that white matter lesions on T2-weighted images are not the only hallmark of RIS. Future longitudinal studies with larger samples are warranted to better clarify the effect of RIS-related white matter lesions on gray matter tissue.

Anti-JC virus seroprevalence in a Spanish multiple sclerosis cohort: JC virus seroprevalence in Spain.

OBJECTIVE: To estimate the seroprevalence of anti-JCV antibodies, seroconverting rates and evolution of antibody levels in a multiple sclerosis (MS) Spanish cohort. METHODS: Multicenter, retrospective cross-sectional and longitudinal study. The JCV seroprevalence was analyzed in 711 MS patients by using 1st (STRATIFY-1) and 2nd generation (STRATIFY-2) two-step ELISA over 2.65 (±0.97) years. Seroconversion rate was obtained over 2 samples from 314 patients, and index stability from 301 patients with 3 or more samples available. The effect of each ELISA generation, demographics, clinical characteristics and therapy on seroprevalence was assessed by logistic regression. RESULTS: The overall anti-JCV seroprevalence was 55.3% (51.6-58.9), similar across regions (p=0.073). It increased with age (p<0.000) and when STRATIFY-2 was used (60.5%, p=0.001). Neither sex nor immunosuppressive therapy had any influence. Yearly seroconversion rate was 7% (considering only STRATIFY-2). Serological changes were observed in 24/301 patients, 5.7% initially seropositive reverted to seronegative and 7% initially seronegative changed to seropositive and again to seronegative, all these cases had initial index values around the assay's cut-off. CONCLUSIONS: JCV seroprevalence in Spanish MS patients was similar to that reported in other European populations. Changes in serostatus are not infrequent and should be considered in clinical decisions.

Psychiatric disturbances in radiologically isolated syndrome.

BACKGROUND: Radiologically isolated syndrome (RIS) is characterized by incidental lesions suggestive of multiple sclerosis (MS) on MRI without typical symptoms of MS. Clinically isolated syndrome (CIS) is characterized by a first episode of neurologic symptoms caused by demyelination in the central nervous system. To date, psychiatric disorders have not been systematically addressed in RIS subjects. We assessed emotional disturbances, personality features and health-related quality of life (HRQoL) in a cohort of RIS patients as compared with clinically isolated syndrome (CIS). METHODS: Twenty-eight RIS patients, 25 clinically isolated syndrome (CIS) patients, and 22 healthy subjects were enrolled in the study. Participants were administered a mood scale (Hamilton Depression Rating Scale), behavioural measures (Personality Assessment Inventory), and fatigue measures (Fatigue Impact Scale for Daily Use). HRQoL was quantified using the EuroQol-5. RESULTS: 14 (50%) of RIS patients had clinically significant depression, with over one-third of these having moderate depression, scores virtually identical to those observed in CIS patients. 11 of 28 (39.3%) subjects with RIS had anxious depression, a figure three times higher than that found in CIS patients. RIS patients' HAMD-17 total score showed a very strong correlation with severity of fatigue. In addition, RIS patients reported lower HRQoL (p = 0.036) and a significantly higher symptoms load for somatisation compared to both CIS and control groups (p < 0.002). CONCLUSION: RIS patients had high rates of depression, particularly anxious depression and somatization. Future studies are warranted to clarify whether these psychiatric disturbances are causally associated with a distinct white matter psychopathologic process.

[Fluctuating ptosis as the presenting symptom of spontaneous liquoral hypotension syndrome]. / Ptosis fluctuante como presentación del síndrome de hipotensión licuoral espontánea.

TITLE: Ptosis fluctuante como presentacion del sindrome de hipotension licuoral espontanea.

Versiones en español del Minimental State Examination (MMSE). Cuestiones para su uso en la práctica clínica / Spanish versions of the Minimental State Examination (MMSE). Questions for their use in clinical practice

El Minimental State Examination (MMSE), creado en 1975 como instrumento para la evaluación breve del estado mental, ha tenido una gran difusión, y es el test cognitivo más citado en Medline y con mayor número de versiones idiomáticas (superiores a 70). Este artículo pretende, mediante una revisión en la base de datos Medline, analizar sus virtudes y limitaciones, además de precisar su utilidad clínica actual, tanto de la versión original como de sus modificaciones, principalmente de las adaptaciones al español. El MMSE (original o versiones) es el test más utilizado para la evaluación cognitiva estandarizada en el ámbito clínico, sobre todo en el anciano. Es el que dispone de más datos para el cribado, estadiaje y seguimiento de las demencias. Sin embargo, dado que su cumplimentación puede requerir más de 10 minutos, ha de competir con tests de cribado más cortos y específicos en atención primaria y el medio comunitario. En el ámbito hospitalario y especializado, se precisan evaluaciones neuropsicológicas estandarizadas más amplias que permitan detectar alteraciones cognitivas sutiles en pacientes con demencia incipiente o alteración cognitiva leve, además de establecer un perfil cognitivo de los diferentes subtipos de demencias. Este trabajo realiza una serie de recomendaciones sobre el uso clínico de las versiones españolas del MMSE en diferentes contextos de aplicación (AU)

The Minimental State Examination (MMSE), created in 1975 as a tool for briefly evaluating the patient’s mental state, has been widely used and is the most frequently cited cognitive test on Medline, as well as being the one with the most versions in different languages (over 70). Through a review of the Medline database, this paper aims to analyse its virtues and shortcomings, in addition to determining its current clinical usefulness, in both the original version and any of its modifications, although here we are mainly concerned with its Spanish adaptations. The MMSE (original or versions) is the most commonly used test for standardised cognitive assessment in the clinical setting, especially in the case of the elderly. It is the test with the most data for screening, staging and monitoring dementias. Yet, because filling it in may take over 10 minutes, it has to compete with shorter, more specific screening tests in the primary care and community setting. In the hospital and specialised setting, there is a need for broader standardised neuropsychological tests that make it possible to detect subtle cognitive disorders in patients with incipient dementia or mild cognitive impairment, as well as to establish a cognitive profile of the different subtypes of dementia. This study proposes a series of recommendations on the clinical use of the Spanish versions of the MMSE in different contexts of application (AU)

Embolismo cerebrocerebral: un camino desconocido en el ictus isquémico / Brain-to-brain embolism: an unknown pathway to consider in ischemic strokes

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Ptosis fluctuante como presentación del síndrome de hipotensión licuoral espontánea / Fluctuating ptosis as the presenting symptom of spontaneous liquoral hypotension syndrome

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