Frequency of cognitive impairment in patients with neuromyelitis optica spectrum disorder in Mexico.

Background: Between 29% and 67% of neuromyelitis optica spectrum disorder patients have cognitive alterations. Objective: To assess the frequency of cognitive impairment in patients with neuromyelitis optica spectrum disorder in Mexico using the Brief International Cognitive Assessment for Multiple Sclerosis. Methods: We evaluated 40 neuromyelitis optica spectrum disorder patients and 40 healthy controls from Mexico. Results: 28 (70.0%) patients with neuromyelitis optica spectrum disorder had cognitive impairment in two or more cognitive domains. Student´s T test showed statistically poor performance by neuromyelitis optica spectrum disorder patients compared to healthy controls on all three neuropsychological test scores. This significant difference was observed on the Symbols Digit Modalities Test (t = 8.875; p ≤ 0.001); California Verbal Learning Test-II memory (t = 10.418; p ≤ 0.001); and Brief Visuospatial Memory Test Revised (t = 6.123; p ≤ 0.001). Conclusions: This study showed that 70% of neuromyelitis optica spectrum disorder patients exhibited cognitive impairment in two or more cognitive domains. Determining the frequency of cognitive impairment will guide the decision of Neuropsychologists in planning cognitive rehabilitation across various domains.

Incidence, and factors associated with moderate/severe pediatric traumatic brain injury in children aged 5-15 years in western, Mexico.

OBJECTIVE: The study objectives were to estimate the standardized incidence and evaluate factors associated with moderate/severe pediatric traumatic brain injury (p-TBI) in children aged 5-15 years in Western, Mexico. METHODS: The study was cross-sectional in design. We estimated the standardized incidence of moderate/severe p-TBI using the direct methods of the World Health Organization (WHO) standard populations. We utilized the Glasgow Coma Scale (GCS) to identify moderate/severe p-TBI patients (GCS ≤ 13). Logistic regression analysis was applied to evaluate variables associated with moderate/severe p-TBI. RESULTS: The standardized incidence of patients diagnosed with moderate/severe p-TBI was 31.0/100,000 person-years (95 % CI 28.7-33.4). According to age, the moderate/severe TBI group was included. A total of 254 (38.5 %) patients were aged 5-9 years, 343 (52.0 %) were aged 10-14 years, and 62 (9.5 %) were aged 15 years. Factors associated with moderate/severe TBI in the crude analysis were male sex (OR 5.50, 95 % CI 4.16-7.39, p < 0.001), primary school (OR 2.15, 95 % CI 1.62-2.84, p < 0.001), and falls (OR 1.34, 95 % CI 1.02-1.77, p = 0.035). Factors associated with moderate/severe p-TBI in the adjusted analysis were male sex (OR 6.12, 95 % CI 4.53-8.29, p < 0.001), primary school (OR 3.25, 95 % CI 2.31-4.55, p < 0.001), and falls (OR 1.78, 95 % CI 1.28-2.47, p < 0.001). CONCLUSION: The incidence of moderate/severe p-TBI in children aged 5-15 years in western Mexico in this study was higher than that in other studies. One of the biggest factors associated with moderate/severe p-TBI was male sex, specifically those with lower education levels and those who were prone to falls.

Validation of the Brief International Cognitive Assessment for Multiple Sclerosis (BICAMS) in individuals with multiple sclerosis from Mexico.

BACKGROUND: Cognitive impairment is observed in 43-70 % of Multiple sclerosis (MS) patients. One of the most widely used batteries for cognitive assessment in this population is the Brief International Cognitive Assessment for MS (BICAMS). The objective of this study was to validate and assess the reliability of the BICAMS in a Mexican population with MS and to obtain and provide regression-based norms. METHODS: One hundred healthy controls (HCs) and 100 patients with multiple sclerosis participated in the present study, and groups were matched for age, years of education and sex. Subjects completed all three tests of the BICAMS. Test-retest measures were obtained from 30 patients to test reliability. RESULTS: The sample´s average age was 43.39 ± 6.03 years old, and the average years of education was 12.55 ± 2.52 years. Approximately 63 % of the participants were female. The groups did not differ in age, years of education, or sex. The MS group performed significantly worse than the HCs group on all three neuropsychological tests. A significant difference was observed for the SDMT (t = 10.166; p=<0.001), CVLT-II (t = 10.949; p=<0.001), and BVMT-R (t = 2.636; p = 0.009). For all comparisons, the effect size (d) for each test was calculated as follows: SDMT= 0.58 and CVLT-II= 0.61. The test-retest coefficients for each test were as follows: SDMT: r = 0.95; CVLT-II: r = 0.84; and BVMT-R = 0.81. CONCLUSION: The BICAMS can provide information on cognitive impairment in MS patients, and this information can be used by neuropsychologists for cognitive rehabilitation in different domains.

Clinical Characteristics and Predictors of Short-Term Outcome in Mexican Adult Patients with Guillain-Barré Syndrome.

BACKGROUND: Information regarding the clinical presentation and outcome of Guillain-Barré Syndrome (GBS) in adults from Latin America is limited. OBJECTIVE: To identify clinical characteristics and short-term outcome predictors in adult Mexican patients with GBS. PATIENTS AND METHODS: We included adult patients with clinical and electrophysiological data with confirmed GBS, admitted to a tertiary hospital in Western Mexico, from January 2002 to February 2011. A good outcome at hospital discharge was considered if patients had a Hughes score of 0-2 and at 3 and 6 months, a Hughes score of 0-1. RESULTS: A total of 115 patients were analyzed (68% men, mean age 44 years old, range 18-84). Previous infection occurred in 63% of cases. Descendent pattern of weakness was observed in 40 (35%) patients. GBS subtypes were: acute motor axonal neuropathy in 31%, acute inflammatory demyelinating polyneuropathy in 29%, sensory axonal neuropathy (AMSAN) in 18%, and equivocal in 22%. A total of 73 (63%) patients received induction therapy: 50 (68%) received plasmapheresis and 13 (18%) received intravenous immunoglobulin (IVIG). In-hospital mortality occurred in 14 (12%) patients. Early gait complaints and emergency room admission with mild Hughes score (0-2) were predictors for a good outcome at hospital discharge (P < 0.05); meanwhile, age >75 years; dysarthria and higher Hughes score were associated with a poor outcome(P < 0.05). CONCLUSIONS: Axonal pattern, motor involvement, and the descendent pattern of presentation were the main clinical GBS findings in our cohort. Higher Hughes scale scores at hospital admission were a strong predictor for a bad outcome at hospital discharge and short-term follow-up, independently of treatment type or in-hospital management. GBS in Mexico still carries considerable mortality.

Longitudinal Growth Curve Trajectories of Family Dynamics after Pediatric Traumatic Brain Injury in Mexico.

Pediatric traumatic brain injury (TBI) represents a serious public health concern. Family members are often caregivers for children with TBI, which can result in a significant strain on familial relationships. Research is needed to examine aspects of family functioning in the context of recovery post-TBI, especially in Latin America, where cultural norms may reinforce caregiving by family members, but where resources for these caregivers may be scarce. This study examined caregiver-reported family satisfaction, communication, cohesion, and flexibility at three time points in the year post-injury for 46 families of a child with TBI in comparison to healthy control families. Families experiencing pediatric TBI were recruited from a large hospital in Guadalajara, Mexico, while healthy controls were recruited from a local educational center. Results from multilevel growth curve models demonstrated that caregivers of children with a TBI reported significantly worse family functioning than controls at each assessment. Families experiencing pediatric TBI were unable to attain the level of functioning of controls during the time span studied, suggesting that these families are likely to experience long-term disruptions in family functioning. The current study highlights the need for family-level intervention programs to target functioning for families affected by pediatric TBI who are at risk for difficulties within a rehabilitation context.

Sustained attention in schoolchildren with type-1 diabetes. A quantitative EEG study.

OBJECTIVE: Type-1 diabetes (T1D) is a disruptive metabolic disease that has an impact on neurodevelopment through its effects on the structure and function of the brain. One of the cognitive domains affected by T1D is sustained attention. The aim of this study was to analyze this process in children with T1D and compare their results to those of healthy controls. METHODS: Seventeen T1D children attending regular primary school and a similar group of healthy children matched by gender, age, handedness, and educational level were evaluated while identifying happy faces in a Go-NoGo task presented visually with simultaneous electrophysiological recording. RESULTS: Behavioral performance in the two groups was similar but, the T1D children showed greater prefrontal and frontoparietal spectral power in the theta and alpha bands, compared to controls. Distinct patterns of theta lateralization between groups were also observed, with a negative correlation between frontal power magnitudes in delta and theta and glycated hemoglobin levels. CONCLUSIONS: These results seem to reflect the early deleterious effects of T1D on neurodevelopment, which affects mainly attention allocation processes and the neurofunctional substrates that underlie them. SIGNIFICANCE: This phenomenon emphasizes the need for studies on neural-specific targets in which T1D affects neurodevelopment.

[Cognitive assessment in children who presented gastroschisis: a case-control study]. / Evaluacion cognitiva en niños que presentaron gastrosquisis: estudio de casos y controles.

INTRODUCTION: Gastroschisis is a malformation of the abdominal wall that is corrected by surgery and requires special hospital care, such as immobilisation, dietary restriction and separation from the mother for a variable period of time, among others. To analyse the possible cognitive repercussions, the Bayley III test was administered to 14 children. SUBJECTS AND METHODS: The study was conducted with seven cases (born with gastroschisis) and seven controls, in civil hospitals in Guadalajara, over the period January-April 2013. RESULTS: No evidence of retardation was found in the cases in the cognition, language and motor conduct assessments, whereas in those associated with socio-emotional and adaptive behaviour the scores favoured the control group. This shows that the latter have better adaptation and interaction strategies with respect to the cases group. CONCLUSIONS: Gastroschisis will not affect later neurodevelopment, at least in this group which presented only this abnormality and deficits that can be explained by their perinatal circumstances. Nevertheless, this prognosis cannot be generalised to other cases with a more severe clinical picture, a longer stay in hospital and associated comorbidity. In any case, it is important to inform the parents as of the prenatal stage about the expected consequences of this pathology.

TITLE: Evaluacion cognitiva en niños que presentaron gastrosquisis: estudio de casos y controles.Introduccion. La gastrosquisis es una malformacion de la pared abdominal que se corrige mediante cirugia y requiere cuidados hospitalarios especiales, como inmovilizacion, restriccion alimenticia y separacion de la madre durante tiempo variable, entre otros; para analizar las posibles repercusiones cognitivas se aplico la prueba de Bayley III a 14 niños. Sujetos y metodos. Siete casos (nacidos con gastrosquisis) y siete controles, en los hospitales civiles de Guadalajara, en el periodo enero-abril de 2013. Resultados. Los casos no evidenciaron retraso en las evaluaciones relacionadas con la cognicion, el lenguaje y la conducta motora, en tanto que en las asociadas a la conducta socioemocional y adaptativa las puntuaciones favorecieron al grupo control, lo que refleja que poseen mejores estrategias de adaptacion e interaccion respecto al grupo de casos. Conclusiones. La gastrosquisis no afectara el neurodesarrollo ulterior, por lo menos en este grupo que presento esta unica anormalidad y deficits explicables por sus circunstancias perinatales, sin que este pronostico pueda generalizarse a otros casos con un cuadro clinico mas grave, mayor duracion de la estancia hospitalaria y comorbilidad asociada. De cualquier forma, es importante informar a los padres desde la etapa prenatal respecto a las consecuencias esperadas de esta patologia.

Health-related quality of life and mental health outcomes in Mexican TBI caregivers.

Research has documented the deleterious effects on caregivers of providing care for an individual with traumatic brain injury (TBI). TBI caregivers in Mexico specifically have reduced health-related quality of life (HRQOL) across both physical and mental health domains. The purpose of the current study was to uncover the system of connections between Mexican TBI caregivers' HRQOL and their mental health. A cross-sectional survey was conducted at a public medical facility in Guadalajara, México. Ninety family caregivers of individuals with TBI completed measures of HRQOL, satisfaction with life, depression, and burden. A canonical correlation analysis revealed that the better the caregivers' HRQOL, the better their mental health was, with the effect reaching a large-sized effect. A distinct pattern emerged linking caregivers' higher energy levels and better social functioning to lower depression and greater satisfaction with life. A series of multiple regressions similarly uncovered that the most robust independent HRQOL predictors of caregiver mental health were vitality and social functioning. Especially for TBI caregivers with poor health, behavioral health interventions in Latin America that target the HRQOL domains of social functioning and vitality may significantly improve caregiver mental health, and as a result, informal care for TBI.

Postconcussion syndrome and mild head injury: the role of early diagnosis using neuropsychological tests and functional magnetic resonance/spectroscopy.

OBJECTIVE: Postconcussion syndrome (PCS) is usually underestimated in cases of mild head injury (MHI). It is one of the most common causes of physical, cognitive, and psychomotor disturbances that affect the quality of life, work, and social reintegration of individuals. Until now, we did not have evidence of structural abnormalities shown by traditional imaging methods. We describe a series of instruments that confirm PCS with satisfactory evidence. METHODS: We conducted a clinical prospective study of 19 adult patients selected from a pool of 320 adults who had MHI. The cognitive, executive, and memory functions of subjects were examined within the first 72 hours using neuropsychological tests. These results were analyzed with neurological examination and functional MR/spectroscopy. RESULTS: Neurobehavioral alterations were found in 47% of cases, with posttraumatic amnesia. Around 55% of subjects experienced physical disturbances such as headache and postural vertigo due to PCS. The spectroscopy reports revealed neurometabolite disturbances in 54% of cases, particularly N-acetylaspartate (Naa) and the Naa/lactate ratio in the frontal lobe. We observed a relationship between metabolite disturbances in spectroscopy and the digit span backward test (P = .045). CONCLUSIONS: This first diagnostic strategy supports with scientific evidence the presence of PCS in MHI. We identified physical and neuropsychological abnormalities from this group, affecting the areas of memory and learning. Evidence of neurometabolite disturbances were found specifically in the frontal lobe. It is necessary to complete comparative follow-up for an extended period of time. The neuropsychological and spectroscopy tests allow us to confirm the diagnosis of a syndrome that is usually neglected.

Just how bad is it? Comparison of the mental health of Mexican traumatic brain injury caregivers to age-matched healthy controls.

OBJECTIVE: To compare the mental health of family caregivers of individuals with Traumatic brain injury (TBI) to an age-matched healthy control from Guadalajara, Mexico. SETTING: Hospital Civil Fray Antonio Alcade, a public medical facility in Guadalajara, Mexico. PARTICIPANTS: Ninety family caregivers of individuals with TBI and 89 healthy controls (n = 179) did not differ with respect to age, sex, marital status, education, or household income. MAIN OUTCOME MEASURES: Outcome measures assessed satisfaction with life (Satisfaction with Life Scale), depression (Patient Health Questionnaire-9), social support (Interpersonal Support Evaluation List), self-esteem (Rosenberg Self-Esteem Scale), and anxiety (State-Trait Anxiety Inventory). RESULTS: A multivariate analysis of variance found that in comparison to controls, TBI caregivers reported substantially lower mental health scores across all indices, as well as lower social support in two out of three comparisons. The effect sizes of the social support differences were small; two out of five mental health differences reached medium-sized effects; and the other three reached large-sized effects. CONCLUSIONS: Because TBI caregivers' mental health influences the quality of informal care they can provide, mental health interventions for family caregivers are an extremely important part of TBI rehabilitation in Latin America, especially considering familism as a core value in Latino culture.

Examining the influence of three types of social support on the mental health of mexican caregivers of individuals with traumatic brain injury.

OBJECTIVE: The aim of this study was to examine the influence of three types of social support (appraisal, belonging, and tangible) on caregiver mental health (anxiety, burden, depression, and satisfaction with life) among Mexican caregivers of individuals with traumatic brain injury. DESIGN: This is a cross-sectional study of 90 family caregivers from Hospital Civil Fray Antonio Alcade in Guadalajara, Mexico. RESULTS: More months spent caregiving was associated with decreases in all three types of social support. Older age and fewer years of education were associated with lower appraisal social support. More hours per week spent caregiving was associated with lower caregiver state anxiety and greater satisfaction with life. Appraisal, belonging, and tangible social support were all significantly correlated with more salubrious caregiver mental health outcomes, except satisfaction with life. Appraisal social support independently predicted lower caregiver depression. CONCLUSIONS: Particularly in Latin America, strong social support networks and family connections seem closely tied to key mental health outcomes such as depression. Rehabilitation interventions aimed at strengthening perceptions of social support of caregivers of individuals with traumatic brain injury that specifically target availability of advice may improve mental health and contribute to more optimal informal care for individuals with traumatic brain injury.

La distimia en el contexto clínico / Dysthymia in the Clinical Context

La distimia se define como un trastorno afectivo crónico que persiste por lo menos dos años en adultos y un a ño en adolescentes y niños. Según el DSM IV-TR, se clasifica en dos subtipos: la distimia de inicio temprano, antes de los 21 años, y la de inicio tardío después de los 21 años. Generalmente antes de los 21 años se puede observar trastornos de conducta, déficit de atención e hiperactividad y algunos síntomas vegetativos. Es importante distinguir tempranamente la distimia de otros tipos de depresión, a fin de brindar un tratamiento oportuno que atenúe el impacto continuo de síntomas caracterizados por pobre conciencia del estado de ánimo, pensamiento negativo, baja autoestima y anergia, lo que deteriora progresivamente la calidad de vida. La etiología es compleja y multifactorial, dados los variados mecanismos biológicos, psicológicos y sociales involucrados. Varias hipótesis tratan de explicar la etiología de la distimia; destacan la hipótesis genética que incluye además factores ambientales y la hipótesis aminérgica, que apunta a una deficiencia de serotonina, noradrenalina y dopamina en el sistema nervioso central. Desde nuestro punto de vista, no se puede concebir la distimia como un simple trastorno depresivo leve; es una entidad diferente caracterizada por un trastorno depresivo crónico que puede persistir toda la vida, con importantes repercusiones en la calidad de vida, tanto del sujeto que la padece como de sus familiares.

Dysthymia is defined as a chronic mood disorder that persists for at least two years in adults, and one year in adolescents and children. According to DSM IV-TR, Dysthymia is classified into two subtypes: early-onset, when it begins before 21 years-old, and late onset Dysthymia, when it starts after this age. Before age 21, symptoms of conduct disorder, attention deficit disorder and hyperactivity with a few vegetative symptoms are usually present. It is important to distinguish it from other types of depression, as earlier as possible. This would allow providing these patients with the appropriate treatment to attenuate the impact of symptoms, such as poor awareness of self-mood, negative thinking, low self-esteem, and low energy for social and family activities, which progressively deteriorate their life quality. The etiology of Dysthymia is complex and multifactorial, given the various biological, psychological and social factors involved. Several hypotheses attempt to explain the etiology of Dysthymia, highlighting the genetic hypothesis, which also includes environmental factors, and an aminergic hypothesis suggesting a deficiency in serotonin, norepinephrine and dopamine in the central nervous system. From our point of view, dysthymia cannot be conceived as a simple mild depressive disorder. It is a distinct entity, characterized by a chronic depressive disorder which could persist throughout life, with important repercussions on the life quality of both patients and families.

[Dysthymia in the Clinical Context]. / La distimia en el contexto clínico.

Dysthymia is defined as a chronic mood disorder that persists for at least two years in adults, and one year in adolescents and children. According to DSM IV-TR, Dysthymia is classified into two subtypes: early-onset, when it begins before 21 years-old, and late onset Dysthymia, when it starts after this age. Before age 21, symptoms of conduct disorder, attention deficit disorder and hyperactivity with a few vegetative symptoms are usually present. It is important to distinguish it from other types of depression, as earlier as possible. This would allow providing these patients with the appropriate treatment to attenuate the impact of symptoms, such as poor awareness of self-mood, negative thinking, low self-esteem, and low energy for social and family activities, which progressively deteriorate their life quality. The etiology of Dysthymia is complex and multifactorial, given the various biological, psychological and social factors involved. Several hypotheses attempt to explain the etiology of Dysthymia, highlighting the genetic hypothesis, which also includes environmental factors, and an aminergic hypothesis suggesting a deficiency in serotonin, norepinephrine and dopamine in the central nervous system. From our point of view, dysthymia cannot be conceived as a simple mild depressive disorder. It is a distinct entity, characterized by a chronic depressive disorder which could persist throughout life, with important repercussions on the life quality of both patients and families.

Health-related quality of life in caregivers of individuals with traumatic brain injury from Guadalajara, Mexico.

OBJECTIVE: The goal of the present study was to assess the health-related quality of life of a group of family caregivers of individuals with traumatic brain injury from Guadalajara, Mexico. PATIENTS AND METHODS: Ninety family caregivers of individuals with traumatic brain injury and 83 healthy controls completed the Short-Form 36, a self-report health-related quality of life measure composed of 8 component areas: physical functioning, role-physical, bodily pain, general health, vitality, social functioning, mental health, and role-emotional. The samples were statistically similar with respect to age, gender, marital status, and education. However, caregivers had significantly lower household income than controls. RESULTS: After controlling for income, results showed significantly lower scores for traumatic brain injury caregivers compared with healthy controls on 6 Short-Form 36 subscales: role-emotional, vitality, mental health, social functioning, bodily pain, and general health. CONCLUSION: Caregivers of individuals with traumatic brain injury living in Guadalajara, Mexico report having poorer health-related quality of life across various domains including mental and general health. Future studies should be conducted to determine which specific factors (e.g. lack of services, physical strain of providing care) are responsible for reduced health-related quality of life in these areas. It is likely that resources, such as respite services, adult day-care, aides, outpatient rehabilitation, psycho-educational programs, and support groups would increase health-related quality of life for these individuals.