Publicación Oficial de la Sociedad Ecuatoriana de Neurología, de la Liga Ecuatoriana Contra la Epilepsia y de la Sociedad Iberoamericana de Enfermedad Cerebrovascular

Artículos Originales

« Older Entries
 

Características Clínicas de Pacientes Hipertensos hospitalizados con y sin Enfermedad Cerebrovascular de 60 a 90 años en Quito, Ecuador: Estudio de Casos y Controles. Clinical Characteristics of hospitalized Hypertensive Patients with and without Stroke aged 60 to 90 years in Quito, Ecuador: A Case-Control Study.

Background: Stroke is the world’s second leading cause of death from disease, and disability-adjusted life years. The investment in management of a hospitalized stroke patient generates a high healthcare cost. In Ecuador it is the third leading cause of death. Hypertension is one of the most important factors in the stroke development. Patients with high blood pressure and stroke have a higher risk of complications, mortality and poor prognosis.

Objective: The present study aimed to identify which variables differ between hypertensive patients with stroke versus hypertensive patients without stroke, hospitalized, during 2017- 2020.

Methods: In a population of 96 cases and 57 controls, a retrospective analytical cohort study between two groups of patients was conducted.

Results: The variable education (primary education) was the most affected among cases (χ²=13.298; p=0.039). Patients with atrial fibrillation were significantly higher in the case group (χ²=7.31 p=0.007). Other variables like: sex, age, provenance, years lived with hypertension, smoking, type 2 diabetes mellitus, heart failure, hypercholesterolemia and anticoagulant therapy, showed no significant difference between the two groups.

Conclusions: Patients with complete primary education and atrial fibrillation had significant presence in hypertensive patients with stroke.

Leer artículo completo

Palabras clave: comorbilidades, enfermedad cerebrovascular, enfermedades cardiovasculares, Factores de riesgo, Hipertensión arterial, síndrome metabólico,

Keywords: Arterial hypertension, cardiovascular diseases, Comorbidity, metabolic syndrome, Risk factors, stroke,

Factors related to swallowing prognosis in patients with acute ischemic stroke at a specialized institution in Medellín, Colombia. Factores asociados con el pronóstico deglutorio en pacientes con accidente cerebrovascular isquémico agudo en una institución especializada en Medellín, Colombia.

Objetive: To analyze the factors associated with swallowing prognosis among individuals with acute ischemic stroke who received treatment at a specialized neurology institution in Medellín, Colombia, in 2020.

Methods: This registry-based retrospective cohort study evaluated clinical factors influencing dysphagia, employing parametric survival models for interval-censored data.

Results: 270 patients were included, 52.2% female, with a mean age of 68.7 years (SD 14.4), with a mean follow-up of 4.91 days. The median survival time was 4.1 days (95% CI 3.7-4.6), with a cumulative seven-day survival rate of 22.72%. Main variables associated with dysphagia were TOAST small vessel occlusion (TR = 0.57, 95%CI 0.39-0.84) and large vessel atherosclerosis (TR=0.66, 95%CI 0.46-0.99), NIHSS severe (TR = 0.30, 95%CI 0.17-0.53), moderate (TR = 0.38, 95%CI 0.22-0.68), and mild to moderate scores (TR = 0.52, 95%CI 0.32-0.86), history of Parkinson’s disease (TR = 0.50, 95%CI 0.27-0.96) and older age (p = 0.043).

Conclusion: These findings have implications for developing a risk score to aid decision-making.

Leer artículo completo

Palabras clave: Accidente Cerebrovascular Isquémico, Deglución, Disfagia, Pronóstico,

Keywords: Dysphagia, ischemic stroke, Prognosis, Swallowing,

Mortalidad y pronóstico funcional en pacientes con infarto cerebral en una ciudad a gran altitud (Cusco, 3300m) durante la pandemia por COVID-19. Mortality and functional prognosis in patients with ischemic stroke residing in a high-altitude city (Cusco, 3300 m) during the covid-19 pandemic.

Introduction: Information on stroke mortality in people residing at high altitudes is controversial, and during the coronavirus disease 2019 (COVID-19) pandemic, there was a decrease in in-person care. Our objective is to evaluate mortality and functional prognosis after 3 months in stroke patients residing at high altitude during the COVID-19 pandemic. Methods: An analytical longitudinal study was conducted from January 2020 to January 2022 in a hospital in Cusco (3300 m above sea level), including adult patients diagnosed with stroke but without COVID-19 diagnosis, who were followed up for 90 days, evaluating mortality and functional disability (modified Rankin scale ≥ 3). Clinical and laboratory risk factors were evaluated, obtaining crude and adjusted hazard ratios (HR) through Cox regression models with 95% confidence intervals (CI95%). Results: One hundred twenty-three stroke patients were evaluated. After 90 days of follow-up, 28 patients (22.7%) died and 80 patients (65.0%) were diagnosed with functional disability. In models adjusted for gender, age, Alberta stroke program early CT (ASPECTS) score, and hypertension background, the only variable with increased risk was National Institutes of Health Stroke Scale (NIHSS) score at admission, both for mortality (HR 1.14, CI95% 1.09–1.20) and functional disability (HR 1.07, CI95% 1.04–1.11). Conclusions: Regarding stroke patients cared for in a high-altitude city during the COVID-19 pandemic, NIHSS score at admission is the most important risk factor for determining the 90-day mortality or functional disability, with a risk increase of approximately 10% for both outcomes for each additional point on the scale.

Leer artículo completo

Palabras clave: altitud, estado funcional, infarto cerebral, Mortalidad,

Keywords: altitude, functional status, Mortality, stroke,

Demanda asistencial en consulta de neurología en la provincia de Sucumbíos, Ecuador. Care demand in neurology consultation in Sucumbios province, Ecuador.

Objective: To characterize the care activity in the neurology outpatient clinic of the Marcos Vinicio Iza Hospital in the province of Sucumbíos, Ecuador. Patients and methods: Cross-sectional descriptive observational study, which included patients seen in a first general neurology consultation, between the months of June to November 2022. The variables analyzed included demographic data, related to healthcare activity and clinics. Results were compared between sexes and are shown by age group. Results: 733 patients were included in the study; the mean age was 35 years (SD ± 25.27) with a predominance of males (p 0.008). Most of the patients were of Ecuadorian nationality, followed by Colombians. 84% patients were referred from the primary level of care by family physicians, followed by internal medicine (7%) and pediatrics (6%) from the hospital. The main diagnostic categories treated were epilepsy (24.8%), headache (22.2%) and neurodevelopmental disorders (21.1%). Conclusion: The population we assist has specific characteristics. In our case we function as a consultant to other specialties, mainly Family Medicine. The greater frequency of patients with epilepsy and neuropediatric diseases requires changes in the provision of human resources and diagnosis to demand from the health authorities.

Leer artículo completo

Palabras clave: Asistencia ambulatoria, consulta intrahospitalaria, Ecuador, Enfermedades Neurológicas, epidemiología, gestión clínica,

Keywords: clinical management, Ecuador, epidemiology, in-hospital consultation, neurologic diseases, Neurologic outpatients,

Depression in adult day care centers in Ecuador: Prevalence and associated variables. Depresión en adultos que asisten a los centros de día en Ecuador: Prevalencia y variables asociadas.

Objectives: The present study aims to identify the prevalence and factors associated with depression in older adults attending day care centers in Quito, Ecuador.

Methods: This study is a correlational study with a non-experimental cross-sectional design. The study was applied in the 8 “Centros de Experiencia del Adulto Mayor” in the city of Quito, Ecuador. A total of 463 older adults with a mean age of 70.15 years were evaluated. All participants were administered a sociodemographic and health questionnaire, cognitive functioning, levels of depression, autonomy, and physical activity were measured.

Results: Using linear regressions, direct relationships were identified between depression scores with marital status (B=0.276, p=0.04) and renal impairment (B=1.257, p=0.007); and inverse relationships with educational level (B=-0. 537, p=0.002), sleep hours (B=-0.342, p<0.001), fish consumption (B=-0.318, p=0.021), physical activity (B=-0.454, p=0.002) and cognitive impairment (B=-0.091, p<0.001).

Conclusions: The results reflect the importance of considering a holistic approach in addressing depression in the older adult, including health, functional status and cognitive status together to prevent and or address depression in older adults. This study contributes to the implementation of public health policies related to the variables associated with depression in adults.

Leer artículo completo

Palabras clave: adulto mayor, autonomía funcional, centro de cuidado diurno, depresión, deterioro cognitivo,

Keywords: cognitive impairment, day care center, depression, elderly, functional autonomy,

Estrés Cotidiano, Funciones Ejecutivas y Rendimiento Académico en Escolares de Primaria. Daily Stress, Executive Functions, and Academic Performance in Elementary School Students.

The presence of stress has been linked to executive functions and academic performance; thus, the present research explored its relationship among primary students. The quantitative study included 62 participants between 8-12 years old, divided into late childhood and preadolescents groups.

A School Daily Stress scale was applied, with a report of academic averages and a battery of neuropsychological tests to measure executive functions and global cognitive capacity (CIT). The tests were the Trail making test, the colour and word Stroop test, and the Wechsler Intelligence Scale for Children. The main results showed a significant and negative correlation between daily stress, cognitive flexibility, working memory and inhibitory control (p<.05).

Regression analysis showed that both the CIT and the perception of daily stress predict academic performance (R2= .35). It is concluded that daily stress is relevant for the development of executive functions in primary school children and can have a negative impact on both academic performance and school trajectories.

Leer artículo completo

Palabras clave: escolares, estrés cotidiano, Funciones Ejecutivas, rendimiento académico,

Keywords: academic performance, daily stress, Executive functions, school children,

Alta viscosidad sanguínea en pacientes con Ictus Isquémico que residen a gran altitud. High blood viscosity in patients with ischemic stroke residing at high altitude.

Introduction: Risk factors for ischemic stroke have been extensively studied. However, few studies have been conducted in populations residing in high-altitude cities, where acclimatization processes cause elevations in blood viscosity. Our objective is to evaluate the association between blood viscosity and ischemic stroke in patients residing at altitude and to identify the most frequent subtype of ischemic stroke among these patients.

Methods: This case-control study was conducted in a hospital in Cusco, Peru (3,399 m) and included patients with and without ischemic stroke. Patients were included in the ischemic stroke group (cases) after having had up to three days of confirmed illness. The control group comprised patients hospitalized for other causes. Blood viscosity (in centipoise [cP]) was measured using a cone/plate viscometer. Viscosity data are reported as medians with interquartile ranges (IQR), and associations were evaluated using logistic regression with odds ratios (OR).

Results: A total of 386 patients were included, of which 141 (36.5%) had ischemic stroke. The median age was 67 years (IQR 52-80), and 165 (42.7%) patients were women. Blood viscosity was significantly higher in the ischemic stroke group (5.9 cP; IQR, 5.2–6.8) than in the control group (5.5 cP; IQR, 4.9–6.1; p<0.001). An increase in blood viscosity (in 1 cP increments) was associated with an increased risk of developing ischemic stroke (OR 1.40; 95% confidence interval, 1.16–1.69; p<0.001). Patients with the small-vessel occlusion subtype had the highest blood viscosity (6.1 cP; IQR, 5.8–6.3), which was significantly higher than in patients without stroke (p=0.002) or with other ischemic stroke subtypes (p=0.03).

Conclusions: Patients with ischemic stroke residing at high altitudes have higher blood viscosity than control patients regardless of ischemic stroke subtype, although the small-vessel occlusion subtype corresponded with the highest blood viscosity.

Leer artículo completo

Palabras clave: altitud, infarto cerebral, Viscosidad sanguínea,

Keywords: altitude, Blood Viscosity, stroke,

Experiencia de aprendizaje autorregulado y su efecto en el rendimiento académico de universitarios de primer año. Self-regulated learning experience and its effect on the academic performance of first-year university students.

One of the relevant and predictive variables in explaining the academic performance of university students is self-regulation learning. This is why it becomes one of the necessary areas to develop and promote, especially in the first years of university life.

The aim of this study was to analyze the effect of learning experience on self-regulation of learning, self-efficacy for study regulation, willingness to study and academic performance in first-year university students.

The method has a quantitative approach with cross-sectional data in a sample composed of 115 university students of a career in the area of Engineering. Data processing was performed using the Partial Least Squares method.

The results show that learning experiences have a positive effect on the variables under study and specifically on academic performance.

This implies that the student’s experiences in the learning process, where teaching practices to promote self-regulation learning are especially relevant, have a direct effect on their academic performance

Leer artículo completo

Palabras clave: autorregulación del aprendizaje, estudiantes universitarios, experiencia de aprendizaje, prácticas docentes, rendimiento académico,

Keywords: academic performance, learning experience, self-regulated learning, teaching practices, university students,

Validación ecológica y de contenido del cuestionario de evaluación de las actividades de la vida diaria–escolar o AVD-E en el contexto colombiano. Ecological and content validation of the questionnaire for evaluating activities of daily living–school or ADL-E in the Colombian context.

Background: In Colombia there is little bibliography regarding the adaptation of instruments that assess the Activities of Daily Living in the population with neurodevelopmental disorders. On the other hand, existing research does not report processes of ecological validity or content adjusted to the Colombian contextual characteristics.

Objective: To carry out structural adaptations for the ecological and content validation of the questionnaire for the evaluation of activities of daily life – school or AVD-E, in the Colombian context.

Material and method: A divergent research methodology with a mixed approach and a DEXPLOS design was used, through three focus groups (10 professionals and 5 families), expert validation (8 professionals) and a pilot test (30 infants).

Results: In the qualitative stage, thirteen emerging categories were obtained that evidenced the need to make structural and linguistic changes. In the quantitative stage, content validity (RVC= 3.82), internal consistency (Cronbach’s Alpha= 0.76) and concurrent validity (Pearson= 0.58) were obtained.

Conclusions: In conclusion, the validated items make it possible to measure the variation of ADLs in the Colombian context, responding to the sociocultural particularities inherent to the ecological assessment of the construct.

Leer artículo completo

Palabras clave: AVD, evaluación neuropediátrica, Neurorrehabilitación, trastornos del neurodesarrollo, validez ecológica,

Keywords: AVD, ecological validity, neurodevelopmental disorders, neuropediatric evaluation, Neurorehabilitation,

The postural instability in hemiparkinsonian rats is ameliorated by intrastriatal implants of SiO2-DA. La inestabilidad postural en las ratas hemiparkinsonianas es reducida por implantes intraestriatales de SiO2-DA.

Parkinson’s disease (PD) is a chronic disease with loss of dopaminergic neurons of the substantia nigra pars compacta (SNpc) causing motor impairment.

The objective of this study was to evaluate the effect of the intrastriatal release of dopamine (DA) from SiO2 reservoirs on postural asymmetry in hemiparkinsonian animals.

This study compares groups of rats without an implant (L), with empty SiO2 implant (SiO2), and with SiO2 implant plus DA (SiO2-DA) to assess motor and clinical relevance during vertical exploration using the Steps Adjustment and the Cylinder tests.

All rats showed significant deterioration of up to 80% (p < 0.0001) in the execution of the steps with the contralateral forelimb (CF), without affectation of the ipsilateral forelimb (IF) and only the SiO2-DA group recovered 100% symmetry in the adjustment of steps between both forelimbs.

In the cylinder, only the SiO2-DA group significantly reduced (p < 0.0001) the deterioration in the use of CF during vertical exploration. No tolerance or dyskinesias were present at the time of the study.

These results showed that SiO2-DA reservoirs are safe and a promising therapeutic alternative against PD.

Leer artículo completo

Palabras clave: administración de fármacos, enfermedad de Parkinson, hemiparkinsonismo, Inestabilidad postural, reservorio de SiO2-DA,

Keywords: drug delivery, hemiparkinsonism, Parkinson’s disease, Postural instability, SiO2-DA reservoir,

Complicaciones intrahospitalarias del evento cerebrovascular isquémico de novo en centros hospitalarios de segundo nivel de atención. Inpatient complications of de novo ischemic stroke in second level care hospitals.

The ischemic stroke (IS) is one of the leading causes of mortality worldwide. approximately 90% of patients manifest complications that have been progressively increasing since the last decades. The objective of the study is to determine the inpatient complications of IS in second level hospitals during the period 2020-2022.

Methodology: A retrospective study was carried out in two second level hospitals in Guayaquil. Patients with age ≥ 40 years with de novo ischemic cerebrovascular disease were included. The Oxfordshire Community Stroke Project (OCSP) classification was used to categorize patients according to the affected circulation, with the neurologist being the professional responsible for carrying out said categorization. Descriptive statistics were applied to determine the most frequent neurological complications (NC) and extraneurological (ENC), using frequencies and percentages.

Results: In 320 patients with IS, 64% were men with a mean age of 70 years. In-hospital complications occurred in 72.8% of the patients. The average incidence of NC in the study population was 48.1% while ENC was 55.6%.

Conclusion: In-hospital complications of IS are frequent and their incidence varies depending on the affected circulation.

Leer artículo completo

Palabras clave: complicaciones intrahospitalarias, Enfermedad cerebrovascular isquémica, Mortalidad, Oxfordshire Community Stroke Project,

Keywords: in-hospital complications, ischemic stroke, Mortality, Oxfordshire Community Stroke Project,

Factores de riesgo cardiovascular y etiología del ictus en adultos jóvenes. Cardiovascular risk factors and stroke etiology in young adults.

Objectives: To describe the etiology of stroke and the frequency of cardiovascular risk factors in a group of patients under 50 years of age, hospitalized in the stroke unit of a public tertiary hospital in Ecuador.

Patients and methods: Descriptive and retrospective cross-sectional study of patients aged 50 and under, admitted between November 2016 and August 2019. Demographic data, cardiovascular risk factors, type of stroke, etiology door symptom time and the length of stay in the neurology department were analyzed. The results were compared between sexes.

Results: 45 patients were included. The mean age was 38 ± 10 years and there were no differences between the sexes. The 77.8% had some cardiovascular risk factors. Alcohol consumption predominated (33.3%), followed by smoking and dyslipidemia (22.2%). In general, and by sex, ischemic stroke (75.5%) was the most frequent. Intracerebral hemorrhage represented 24.4%. In the etiology of the ischemic stroke, an unusual cause predominated (35.3%), followed by cardioembolic stroke (26.8%) and that of undetermined etiology. For intracerebral hemorrhage, the most frequent etiology was hypertension (63.3%).

Conclusions: The high frequency of at least one modifiable cardiovascular risk factor, added to the delay in arrival at the hospital, constitute an alert to consider the need to insist on primary prevention and carry out information campaigns aimed to improve knowledge of the disease.

Leer artículo completo

Palabras clave: Adultos jóvenes, Ecuador, Etiología, Factores de riesgo, Ictus,

Keywords: Ecuador, Etiology, Risk factors, stroke, Young adults,

Actividades básicas e instrumentales de la vida diaria en pacientes con demencia tipo Alzheimer. Basic and instrumental activities of daily living in patients with Alzheimer’s dementia.

Alzheimer’s dementia (AD) produces multiple alterations, both in the cognitive, behavioral and functional spheres. The basic activities of daily living (BADL) are affected in patients with AD, compared with subjects without cognitive impairment (SWCI). In this research, 50 patients with AD who met the diagnostic criteria established in the DSM-IV-TR and the NINCDSADRDA and 60 SWCI with similar sociodemographic characteristics were analyzed. The results show that the most affected BADL are the capacities of food, washing, dressing, arranging, transferring, walking, going up and down stairs and the least affected BADL were urination and the ability to go to the toilet, not being affected differentially in the deposition ability. These findings confirm the general hypothesis that patients with AD have involvement of the BADL compared with the SWCI.

Leer artículo completo

Palabras clave: actividades básicas de la vida diaria, demencia tipo alzheimer,

Keywords: Alzheimer dementia, Basic activities of daily living,

Disappointing agreement in the interpretation of neurological adverse events following immunization with SARS-CoV-2 vaccines. A case-series study. Pobre concordancia en la interpretación de eventos adversos neurológicos después de la inmunización con vacunas contra el SARS-CoV-2. Estudio de una serie de casos.

Background: A sizable proportion of the world’s population has been vaccinated to prevent SARS-CoV-2 infections. In clinical practice, however, almost any neurological manifestation occurring after vaccination has been attributed to the vaccine, generating doubts on their safety. In 2013, the WHO created the Adverse Event Following Immunization (AEFI) criteria to establish the relationship between a vaccine and side effects, but they seem not to dispel doubts regarding severity and causality of neurological events following SARS-CoV-2 vaccination. This study aims to analyze consistency of the AEFI to designate probable side effects of SARSCoV-2 vaccines among patients who develop neurological symptoms after vaccination.

Methods: We measured the level of agreement using the Fleiss kappa methodology. Seventeen observers (five neurologists, four infectious disease specialists, and eight internal medicine residents) independently rated 11 cases treated in our service presenting neurological symptoms within 21 days after SARS-CoV-2 vaccination according to the AEFI criteria.

Results: We found low concordance agreements among the 17 raters regarding severity (k=0.088) and causality (k=0.025). When analyzing by raters’ subgroups, agreement for severity was moderately higher among neurologists (k=0.383) and for causality among internal medicine residents (k=0.117).

Conclusions: AEFI criteria do not allow, by themselves, to establish the relationship between a vaccine and adverse neurological effects. Therefore, it is essential to create more useful tools that allow doctors and lay people to be more confident in this challenge.

Leer artículo completo

Palabras clave: COVID-19, Efectos adversos luego de inmunización, Estadísticas Kappa, SARS-CoV-2,

Keywords: Adverse Event Following Immunization, COVID-19, Kappa statistics, SARS-CoV-2, Vaccine,

Predictores de ansiedad durante la pandemia COVID-19 en estudiantes de medicina de Morelos, México. Predictors of anxiety during the COVID-19 pandemic in medical students from Morelos, Mexico.

Introduction: Medical students are a group of concern in the face of COVID-19, as social distancing measures may affect their anxiety and be vulnerable to the emotional impact, since the profession is part of the first line of care in the face of this pandemic.

Objective: To describe the prevalence and predictors of anxiety caused by the COVID-19 pandemic in university medical students from Morelos, Mexico.

Method: Cross-sectional descriptive observational study using an online questionnaire, with Sociodemographic Characterization, Generalized Anxiety Disorder-7 (GAD-7), Passion for Study, Self Compassion Scale (SCS), Connor-Davidson Resilience Scale (CDRISC), Life Satisfaction and Demoralization Scale (DS).

Results: In a sample of 292 medical students, women (62.8%), older than 21 years (66.9%), 72.7% reported anxiety and 65.5% sleep problems. The multiple regression model shows that dysphoria is the variable that reports the greatest predictive capacity of importance with 34.8%, followed by having trouble sleeping with 24.4%, discouragement 22.4%, over-identification 13.9% and concern about getting infected 4.5%.

Conclusions: Concern and uncertainty in the hospital environments where medical students are prepared and trained increase the risk of anxiety, due to the perception of adverse conditions and frustration as part of their profession.

Leer artículo completo

Palabras clave: ansiedad, COVID-19, desmoralización, estudiantes universitarios, malestar psicológico,

Keywords: anxiety, COVID-19, demoralization, psychological distress, university students,

Evaluación de la función cognitiva diaria del adulto y adulto mayor mediante el uso del ECog (everyday cognition). Evaluation of the daily cognitive function of adults and elderly adults through the use of ECog (everyday cognition).

Introduction: Older adulthood is the stage of life where significant biological changes occur, such as a decrease in cognitive function. The ECog is a valuable tool for detecting early changes in declining cognitive function and subjective cognitive impairment. It can be answered by an informant (relative) without needing the patient to be present. It can be applied to patients with a low educational level or some disability without this limitation.

Objective: To know the changes in the daily cognitive function of adults and older adults for decades. (50-59, 60-69, >70 years) using the ECog.

Methods: Descriptive, cross-sectional, randomized, survey-type study. Patients over 50 who attended a Family Medicine consultation for any reason other than dementia were included, patients who did not wish to participate were excluded, and incomplete surveys were eliminated. The n was 180 patients, 60 for each age group (group 1=50-59 years, group 2=60-69 years, and group 3=>70 years). The ECog was applied to the patients (answered by an informant). The means were calculated by age group, the variation between each group was calculated using a means comparison formula, the prevalence of Subjective Cognitive Impairment (cut-off point in ECog>1.36) was calculated by age group, and the most affected domains.

Results: The decrease in cognitive function measured by the ECog increased significantly with age in each group (Anova p value less than 0.001) and the prevalence of cases with Subjective Cognitive Impairment. The most affected functions were memory, attention and organization. The least affected domain was language.

Conclusion: A significant decline in cognitive function was observed with advancing age. The ECog is an excellent tool, easy
and straightforward to use for the Primary Care physician.

Leer artículo completo

Palabras clave: adulto mayor, deterioro cognitivo, ECog,

Keywords: cognitive impairment, ECog, older adult,

Correlación entre la calidad de sueño y actividad de la enfermedad en pacientes con Espondiloartritis. Correlation between sleep quality and disease activity in patients with Spondyloarthritis.

Objective: To evaluate the quality of sleep and its relationship with disease activity in patients with spondyloarthritis (SpA).

Methodology: Observational, cross-sectional study, in patients of 18 to 65 years of age with a diagnosis of SpA. The Pittsburgh Sleep Quality Index (PSQI) questionnaire was used to measure sleep quality, and the Bath Ankylosing Spondylitis Disease Activity Index (BASDAI), Ankylosing Spondylitis Disease Activity Score (ASDAS-CRP), Disease Activity in PSoriatic Arthritis (DAPSA) instruments were used to assess disease activity.

Results: 72 were evaluated with SpA. The overall median age was 42 (IQ 33.75 – 56.25), the mean sleep quality measured by PSQI was 9.15 ± 4.11. Scores 8 and 9 presenting more frequently with 10 subjects each, followed by score 10, present in 9 individuals. 59 patients with SpA were found to have a PSQI score>5 or poor sleep quality. A significant association was observed for sleep quality measured by PSQI, and disease activity assessed by BASDAI (r 0.530; P<0.001), ASDAS-CRP (r 0.533; P<0.001), DAPSA (r 0.368; P=0.002), VGP (r 0.478; P<0.001), VGM (r 0.382; P=0.001), VAS (r 0.522; P<0.001), SJC/66 (r 0.286; P=0.019), ESR (r -0.363; P =0.021). An association was observed between the use of antidepressants and gabapentinoids with sleep quality by PSQI, showing r 0.30; P=0.005, and r 0.25; P=0.029, respectively.

Conclusion: In patients with SpA, poor sleep quality is an independent factor of greater disease activity.

Leer artículo completo

Palabras clave: actividad de la enfermedad, calidad de sueño, espondiloartritis, PSQI,

Keywords: disease activity, PSQI, sleep quality, spondyloarthritis,

Validez y confiabilidad de la tarea experimental de Redes Atencionales para investigaciones de neuropsicología en el contexto ecuatoriano. Validity and reliability of the experimental task of Attentional Networks for neuropsychological research in the Ecuadorian context

The main experimental tasks in the area of neuroscience and psychology have been performed in industrialized populations, but they have not been developed and adapted in a Latin population. The aim of this study was to validate the attentional networks task in an Ecuadorian sample. For this purpose, a construct validity analysis was carried out through an analysis of variance and correlation between the networks; and a reliability analysis for the global components of the attentional networks.
The results showed main and interaction effects proving construct validity in the population. Likewise, for the interaction validity, a high significant correlation was found between all conditions of the attentional networks. For the reliability analysis, a moderate and high relationship was found for the orientation and cognitive control network, but not for the alertness network.
At the end, the importance of the validation of the experimental tasks in the Latin American population and the clinical relevance in the field of neuropsychology are discussed.

Leer artículo completo

Palabras clave: control cognitivo, orientación, redes atencionales, vigilancia,

Keywords: attentional networks, cognitive control, orientation, vigilance,

Neuroeducación física: Efectos del ejercicio aeróbico en la atención alternante, planificación y memoria visuoconstructiva en estudiantes universitarios. Physical neuroeducation: Effects of aerobic exercise on alternating attention, planning and visuoconstructive memory in university students

Introduction: There are numerous reports of the positive effects of physical exercise on various cognitive variables such as attention, mental flexibility, memory, inhibitory control, etc. The aim of the present study was to determine the effects of an aerobic exercise session on alternating attention, planning and visual constructive memory in physical education students from a university in Santiago de Chile.

Methodology: Quantitative with a quasi-experimental design. The sample consisted of physical education pedagogy students, where 15 were the control group was 15, and 20 subjects were the experimental group. The instruments used were the symbols and digits test of Smith, Tower of Hanoi and Rey Complex Figure Test.

Results: There was significative improvement in the experimental group: alternating attention (p=0.018), at the time of the planning test (p=0.005), visuoconstructive memory (p=0.000).

Conclusions and Recommendations: Aerobic exercise improves attention, memory, and planning functions, which could promote the line of study of neurophysical education, so it is suggested within the projections to investigate with different intensities, age ranges and other cognitive variables.

Leer artículo completo

Palabras clave: atención alternante, ejercicio aeróbico, memoria visuoconstructiva, neuroeducación física, planificación,

Keywords: aerobic exercise, alternating attention, physical neuroeducation, Planning, visuoconstructive memory,

Insomnio y factores asociados entre los estudiantes de medicina que se recuperaron de la infección aguda por COVID-19. Insomnia and associated factors among medical students recovering from acute COVID-19 infection

Introduction: The SARS-CoV-2 pandemic significantly affected the mental health of a large portion of the population, with sleep disorders, including insomnia, being notable after COVID-19 infection. One of the populations most affected were university students in the healthcare field, which was the focus of our study.

Objective: To evaluate the relationship between factors associated with insomnia in medical students during the Long-Covid period.
Methods: Data was collected through a survey that included questions about sociodemographic aspects, health habits, sleep disturbances such as insomnia, and COVID-19 history. The severity of insomnia and subjective sleep quality were measured using the Insomnia Severity Index (ISI) and the Pittsburgh Sleep Quality Index (PSQI). Descriptive statistics, Spearman and Kendall correlations, one-way ANOVA, and odds ratios were evaluated.

Results: A total of 117 students were included in the study, with a mean age of 21.8 ± 1.96 years and 58.1% being female. It was found that 65% of medical students experienced some degree of insomnia, while 78.6% reported difficulty sleeping. The Kendall and Spearman correlation coefficients between PSQI and ISI were 0.49 and 0.55, respectively (p < 0.001). Significant correlations were found between self-reported physical health, emotional health, among others.
Discussion: The prevalence of subclinical insomnia (39.3%) and moderate sleep difficulty (47%) is noteworthy. Significant correlations were found between insomnia scales, sleep quality, and an inverse correlation with emotional health. Limitations of the study include the use of ordinal and nominal variables, as well as the number of participants. It is recommended to replicate the study with a larger sample size and utilize a longitudinal design to assess the evolution of insomnia and sleep difficulty over time.

Leer artículo completo

Palabras clave: calidad de sueño, COVID persistente, Insomnio, SARS-CoV-2, trastornos del sueño,

Keywords: Insomnia, Long COVIDs, SARS-CoV-2, sleep disorders, sleep quality,

Propiedades psicométricas de un Instrumento de Tamizaje para Autismo (ITEA) en niños y adolescentes del Ecuador. Psychometric properties of an Autism Screening Instrument (ITEA) in children and adolescents from Ecuador

This study explores factorial validity of the Autism Spectrum Screening Test (ITEA) for the identification of autism in schooled children and adolescents in Ecuador. The psychometric study analyzes the validity and reliability, as well as internal consistency of the elements of the scale. The sample consisted of 848 autistic people, and 350 non-autistic, of ages between 4 and 17 years old, who attended regular schools. The Confirmatory Factor Analysis shows that the ITEA adjustment model behaves adequately for the Ecuadorian population, corroborated by means of a model of four first-order factors and a second-order general agglutinating factor with 32 items, in fact, the absolute, relative, and non-centrality-based fit indicators confirm this. In addition, the scale is highly reliable in terms of internal consistency with ω= .92 [.91 – .93], since it allows obtaining greater precision in the evaluation of the studied construct. It can be concluded that evidence of factorial validity and reliability show that the ITEA, in its structural model, is adequately adjusted for the screening of autism in schooled children with ages between 4 to 17 years old
in Ecuador. According to Support Vector Machines (SVM), which allows information regarding the accuracy of each evaluated item, the set of 42 items reached 89.04% Analysis using the Request for Evidence test (RFE) showed that, in order to increase the accuracy level of ITEA, 31 items exceeded the global value. Regarding the 7 categories evaluated (language, communication, social skills, affectivity, information processing, inflexibility, and sensory perception), a value of 89.387% was obtained, according to the SVM algorithm with “rbf” kernel. The data shows the ability of ITEA to show specific characteristics to identify autism

Leer artículo completo

Palabras clave: Autismo, Ecuador, fiabilidad, población infantil y adolescente, tamizaje, validez,

Keywords: Autism, child and adolescent population, Ecuador, reliability, Screening, validity,

Trail Making Test TMT: Primera aproximación a las propiedades psicométricas en población ecuatoriana adulta. Trail Making Test TMT: First approach to the psychometric properties in the adult Ecuadorian population

Background: The Trail Making Test (TMT) is the most widely used test in Latin America to measure sustained attention (Part A) and executive function (Part B). However, the scales used show differences in the references averages between groups of populations.

Objective: To determine the referential averages of the TMT test, considering the effect of the sociodemographic factor, in order to provide normative data in Ecuadorian adult population, from 18 to 90 years of age.
Method: A quantitative method was developed, with a non-experimental design, based on psychometric techniques in a nonprobabilistic sample of a total of 1679 Ecuadorian participants . The TMT test, part A and B, was administered.

Results: 57.4% of the sample corresponded to female participants, while 42.6% consisted of male participants. The majority coming from the city of Quito (41.7%). The mean age was 34 years, and most reported higher education. The weightings of the referential averages in part A for the general sample were (M: 34.1; SD: 13.2), while in part B it was (M: 77.9; SD: 39.8). Comparing the scores obtained by gender and by age groups, no significant differences were observed; however, in the TMT-B part, the group with higher education (> 12 years) obtained a better performance, compared to the groups with fewer years of education (P=0,000).

Conclusions: the referential averages for the TMT test in the Ecuadorian population show dependence on the sociodemographic factor associated with schooling. In addition, those obtained were observed slightly below the scales provided in other Latino populations. Therefore, it suggests the construction of a referential scale for the TMT test, adapted to the Ecuadorian cultural context

Leer artículo completo

Palabras clave: atención sostenida, Flexibilidad cognitiva, función ejecutiva, Test TMT,

Keywords: Cognitive flexibility, Executive function, sustained attention., TMT Test,

Number of Neurologists and Neurology Training Programs available in the Public Health System of Ecuador: Analysis and Recommendations. Número de Neurólogos y Programas de Entrenamiento en Neurología disponibles en el Sistema de Salud Público del Ecuador: Análisis y Recomendaciones.

Introduction: In 2008, Ecuador’s neurologic healthcare profile displayed significant needs, a lack of neurologists, and neurology training accessibility. In that year, a new constitution introduced universal health care. No publication analyzes Ecuador’s neurological Public Healthcare capacity. Hence, an up-to-date analysis of the number of neurologists and neurology training programs is required.

Objective: Determine if Ecuador’s public healthcare meets the minimum ideal ratio recommended by the World Health Organization of 1 neurologist per 100,000 population and the numb er of neurology training programs in Ecuador.

Methods: Cross-sectional analysis of public data until November 2022 from Ecuador’s Public Health System (PHS) and the Council of Higher Education. Ratios were calculated using the N ational Institute of Statistics and Censuses’ information.

Results: The public health network had ninety-four neurologists. Most found in Pichincha (37/39.4%) and Guayas (24/25.5%). There was one per province in five provinces. No neurologists were available in eight provinces. Two provinces met the ideal ratio. Ecuador’s ratio was 0.54:100,000 neurologists per population. One neuro logy training program was found in Quito.

Conclusion: Ecuador’s PHS has a shortage of neurologists, unfulfilling the minimum ideal ratio, and a severe lack of neurology training. Decentralizing neurological services, primary care support, and governmental funding for neurology training are an urgent need.

Leer artículo completo

Palabras clave: Ecuador, Educación de Posgrado, neurología, salud pública,

Keywords: Ecuador, neurology, Postgraduate Education, public health,

Análisis Clínico y Evolutivo de Pacientes Con Estado Epiléptico Refractario Acorde el Esquema de Tratamiento de Tercera Línea Utilizado. Clinical And Outcome Analysis Of Patients With Refractory Status Epilepticus According To The Third-Line Treatment Scheme Used

Introduction: The evidence available in the treatment of refractory status epilepticus (RSE) is limited.
Objective: Evaluate the clinical and outcome factors in patients with refractory status epilepticus (RSE) according the third line treatment used (midazolam-MDL and/or propofol-PRO).

Methods: Retrospective cohort study included 34 patients treated by RSE during November 2015 to June 2018.Variables: Age, severity and etiology of RSE, pretreatment level of consciousness, anesthetic drugs (MDL-PRO), outcome at hospital discharge and 3 months according Rankin score.

Results: Mean of age of the patients was 51.21±22.3 years and 32.4% (11) had previous history of epilepsy. Super RSE (SSRE) was diagnosed in 35.3% (12) of sample. Mortality reached up 50% of patients and extended to 55.9% at 3 months. Patients treated with MDL had higher rate of vasopressor needs (71.4% vs 50.0%) and the group who received a scheme of combined treatment MDL-PRO included mainly a SSRE patients (p≤0.01), higher rate of tracheostomy (p=0.03), vasopressor drugs (p=0.01) and diminished dosage of anesthetic drugs (p=0.05). Surveillance analysis according Kaplan Meier curve did not found significant differences at 3 months in survival rate between groups. MDL vs PRO (Log Rank=0. 17), MDL vs MDL-PRO (Log Rank=0. 49) y PRO vs MDL-PRO (Log Rank=0. 48).

Conclusion: Patients with RSE had a high mortality, without evidence of increase of mortality in groups according anesthetic drugs used and schemed of treatment applied.

Leer artículo completo

Palabras clave: Coma terapéutico inducido, Estatus epiléptico, Estatus Epiléptico refractario, Midazolam, Propofol,

Keywords: Induced therapeutic coma, Midazolam, Propofol, Refractory status Epilepticus, Status Epilepticus,

Causas de Traumatismo Intracraneal en Pacientes Atendidos en el Servicio de Emergencias del Hospital de Especialidades Teodoro Maldonado Carbo de Guayaquil. Causes Of Traumatic Brain Injury In Patients Admitted To The Emergency Department Of A Specialty Hospital In Guayaquil

Introduction: Traumatic brain injury (TBI) is defined as an alteration in brain function caused by an external force. The most common causes of TBI are falls and traffic accidents, the latter being the most c ommon in low-income countries.

Methodology: A cross-sectional study was conducted in patients with a diagnosis of intracranial trauma in the emergency department of the Teodoro Maldonado Carbo Hospital from January 2017 to December 2020 with the aim of analyzing its causes, clinical and radiological characteristics.

Results: 324 patients were analyzed within the study, evidencing that the most common cause of TBI was traffic accident followed by falls. TBI is more common in men with a mean age of 40 years. Using Pearson’s chi-square and Kruskal-Wallis tests, a statistically significant association was found between cause with age and length of hospital stay (p<0.001). However, there were no significant associations between the specific cause of TBI with patient clinical variables or mortality (p>0.05).

Conclusion: The most prevalent cause of intracranial trauma was traffic accident. There is an association between the cause of TBI and length of hospital stay.

Leer artículo completo

Palabras clave: accidente de tránsito, caídas accidentales, determinantes de mortalidad, estancia hospitalaria, salud pública, Traumatismo intracraneal,

Keywords: accidental falls, hospital stay, mortality determinants, public health, traffic accident, traumatic brain injury,

White matter hyperintensities severity and progression are not related to earlobe crease presence. A cross-sectional and longitudinal prospective study in community-dwelling older adults. La severidad y progresión de hiperintensidades de la sustancia blanca no están relacionados con la presencia del pliegue del lóbulo de la oreja. Un estudio transversal y longitudinal prospectivo en una población de adultos mayores

Background: Earlobe crease (ELC) has been associated with coronary atherosclerosis. Recently, ELC has been associated with white matter hyperintensities (WMH) of presumed vascular origin. However, the results are heterogeneous among studies. We aimed to assess whether ELC is associated with WMH severity and progression in community-dwelling older adults.

Methods: Atahualpa Project Cohort participants received earlobe photographs and brain MRIs to assess the association between ELC and WMH severity, as well as the relationship between ELC and WMH progression using ordinal logistic and Poisson regression models, respectively.

Results: The cross-sectional component of the study included 359 individuals aged ≥60 years. ELC was present in 175 subjects. On MRI, 107 participants did not have WMH, 174 had mild, 56 had moderate, and 22 had severe WMH. A multivariate ordinal logistic regression model did not show a significant association between the main variables investigated (OR: 0.72; 95% C.I.: 0.48 – 1.06). The longitudinal component included 252 individuals, 126 of whom had ELC and 103 had WMH progression. A Poisson regression model showed no association between ELC and WMH progression (IRR: 1.02; 95% C.I.: 0.69 – 1.51).

Conclusions: ELC is not related to WMH severity and progression in the study population.

Leer artículo completo

Palabras clave: el signo de Frank, Estudio de cohorte prospectivo, Factores de riesgo, hiperintensidades de sustancia blanca, Pliegue del lóbulo de la oreja, Progresión,

Keywords: Earlobe crease, Frank’s sign, Progression, Prospective cohort study, Risk factors, White matter hyperintensities,

Evaluación de la calidad de las guías de práctica clínica sobre enfermedad vascular cerebral aguda mediante la herramienta AGREE II. Quality assessment of clinical practice guidelines on stroke using the AGREE II tool

Objetive: Evaluate the quality assessment of the treatment guidelines for stroke between 2010 and 2021.

Methods: Evaluation by AGREE II instrument. Intraclass correlation was performed for two observers, and it was analyzed the consensus on blood pressure goals and the use of prehospital scales.

Results: 21 clinical practice guidelines were included. The consensus between observers was 0.88 (95% CI: 0.69-0.95). The highest score was for clarity of presentation, while the lowest was for applicability. Nine guidelines (42.9%) were “recommended,” seven were “not recommended” (33.3%) and five were “recommended, but with modifications.” There is consensus on the blood pressure goals in the initial phase. The Fast scale was the most recommended.

Conclusions: Less than half of the guidelines analyzed were recommended for clinical use. Since 2016, the guidelines have shown substantial improvements in their quality. Implementing and actively utilizing the guidelines demands strengthening the applicability and editorial independence.

Leer artículo completo

Palabras clave: calidad, enfermedad vascular cerebral aguda, Guía de Práctica Clínica,

Keywords: clinical practice guideline, quality, stroke,

Escala de Conocimiento de la Enfermedad de Alzheimer: Adaptación y Análisis de las Propiedades Psicométricas en Estudiantes Universitarios Ecuatorianos. Alzheimer’s Disease Knowledge Scale: Adaptation and Analysis of Psychometric Properties in Ecuadorian University Students

The aim of this study was to develop a linguistic adaptation of the Alzheimer’s Disease Knowledge Scale (ADKS), and to provide evidence on the reliability and validity of the adapted test. The ADKS is a self-administered instrument that examines knowledge about risk factors, assessment and diagnosis, symptoms, course, impact on life, care and treatment and management of Alzheimer’s disease (AD).

Methods: An instrumental study was implemented. The ADKS items were adapted to the Ecuadorian use of the Spanish language through an iterative process of translation by experts. Next, a sample of 523 university students completed the adapted scale together with a set of other instruments to analyze the fiability and criterion validity of the scale.

Results: ADKS Ecuador showed good internal consistency (Cronbach’s α=.78), adequate test-retest reliability, p > .05, and convergent and discriminatory evidence of validity when related to other variables.

Conclusion: ADKS Ecuador is an adequate instrument to assess general knowledge about AD in young highlgy educated Ecuadorian population with low dom ain knowledge.

Leer artículo completo

Palabras clave: Conocimiento, Educación para la salud, Enfermedad de Alzheimer, evaluación., psicometría,

Keywords: Alzheimer’s Disease, assessment, Health educations, Knowledge, psychometrics,

Prevalencia de deterioro cognitivo leve en peruanos adultos mayores y de mediana edad. Cognitive impairment prevalence in peruvian middle-age and elderly adults

Appraisals of dementias worldwide envisage an unfavorable scenario, especially in developing countries. Since factors such as education, socioeconomic status and healthiness play an important role in the development of Alzheimer’s disease and other dementias. It is known that pathophysiological features begin up to 20 years before an Alzheimer’s diagnosis and that the disease transits through three stages that include normal aging, mild cognitive impairment, and Alzheimer’s disease. The objective of this study was to determine the prevalence of cognitive impairment in a sample of middle-aged and older adults in southern Peru. A discriminant cognitive evaluation is performed for the absence or presence of cognitive alteration, focused especially on memory, language, visuoperception/visuoconstruction and other cognitive domains. Mini-Mental State Examination, Clock´s Test, and Verbal Fluency test were used, obtaining prevalence data for cognitive impairment with adjusted cut-off points according to age ranges (50-98 years) sex and education. Parametric and non-parametric statistics, logistic regression, Pearson correlation and ANCOVA were performed. The most suitable cut points for our population were selected through the ROC curves and the Youden index. The percentage of global mild cognitive deterioration was 58.80%. It is necessary to generate more effective mental health policies, especially referring to the middle-aged and elderly population, that address the early detection of MCI and Alzheimer’s disease.

Leer artículo completo

Palabras clave: Adultos de mediana edad, Adultos Mayores, deterioro cognitivo, epidemiología, fluidez verbal, MMSE, Test del reloj,

Keywords: Clock's test, cognitive impairment, elderly adults, epidemiology, Middle-age adults, MMSE, verbal fluency,

Testing the reliability of the Downton Fall Risk Index for predicting incident falls in community-dwelling older adults. A prospective population-based study. Evaluación de la confiabilidad del “Índice Downton de riesgo de caídas” como predictor de caídas incidentes en adultos mayores que viven en la comunidad. Estudio poblacional prospectivo.

Background: Accidental falls are a major cause of disability and death in older adults. However, the reliability of instruments designed to estimate the risk of future falls has not been adequately established in community dwellers.

Methods: Departing from a previous cross-sectional study of older adults living in rural Ecuador that estimated the potential risk of future falls, we carried out a prospective longitudinal study to assess the reliability of the Downton Fall Risk Index (DFRI) as a predictor of incident falls during three years of follow-up.

Results: Of 254 individuals, 158 (62%) experienced incident falls. The mean score of the baseline DFRI was 1.6±1.3 points, with 54 (21%) individuals showing an increased risk for future falls (DFRI score ≥3 points). Forty-seven of the 54 individuals with a positive DFRI had incident falls as opposed to 111/200 individuals with a negative DFRI (p<0.001). An adjusted logistic regression model found that individuals with a positive DFRI have a fivefold increase in incident falls compared with those having a negative DFRI (OR: 4.91; 95% C.I.: 1.94 – 12.4). Receiver operator characteristics curve analysis showed an area under the curve (AUC) of 0.612 (95% C.I.: 0.568 – 0.657) for a positive DFRI to predict incident falls. However, the AUC for the predictive value of incident falls given a history of previous falls (as a single variable) was 0.908 (95% C.I.: 0.875 – 0.942).

Conclusions: The DFRI has only a moderate predictive value for the occurrence of incident falls that is surpassed by that of previous falls.

Leer artículo completo

Palabras clave: Adultos Mayores, Caídas, Comunidades rurales, Estudio poblacional prospectivo, Índice Downton de riesgo de caídas,

Keywords: Downton Fall Risk Index, Falls, older adults, Population-based longitudinal cohort, Rural communities,
« Older Entries
 
 
Licencia Creative Commons
Salvo que se estipule lo contrario el contenido de la Revista Ecuatoriana de Neurología está bajo una Licencia Creative Commons Atribución-NoComercial-SinDerivadas 4.0 Internacional.