ABSTRACT Background: In Latin America, epilepsy in the elderly is a neglected issue that has never been studied. The epidemiological transition has significantly altered the demographics of epilepsy, and therefore, we would like to draw attention to this topic. Objective: We require local real-world evidence, as the literature often depicts a different scenario, including pharmacological management. Methods: From 2007 to 2018, we recruited all patients with new-onset geriatric epilepsy (first seizure after the age of 60) tracked from ten Mexican hospitals, adding them to patients with similar characteristics from a previously published study. The diagnosis was confirmed in all patients by a certified neurologist, and they were also studied using a conventional electroencephalogram and imaging workup. Results: A diagnosis of new-onset geriatric epilepsy (Elderly patients was established in 100 cases. No specific cause was found in 26% of patients, while 42% had a stroke and 10% had neurocysticercosis (NCC). Monotherapy was the choice in 83 patients, and phenytoin was the most used drug (50%), followed by carbamazepine (25%). Conclusion: NCC remains a frequent cause of new-onset geriatric epilepsy. This distribution is not seen in the literature, mainly representing patients from wealthy economies. In our setting, financial constraints influence the choice of the drug, and newer antiepileptic drugs should be made more affordable to this population with economic and physical frailty.

Abstract Background: The outbreak of COVID-19 has created a landslide of publications, from different sources and unequal impact. We considered that the first 3 months are crucial to understand how knowledge has been generated by performing a bibliometric analysis, including the citations to these articles to guide researchers in exploring this field, and to evaluate the relationship between confirmed COVID-19 cases and deaths with the number of papers per country. Methods: Scientific publications were obtained from PubMed (January-March 2020) and their citations during the first 6 months retrieved from the Scopus database. An analysis of the number of papers by country, approach (type and category of publication), and impact was made. A multiple linear regression model was implemented to analyze the correlation between the number of publications and confirmed cases and deaths. Results: A total of 2,530 publications were analyzed with 59,104 citations (23.4 citations/article), written by authors from 67 countries. China was the country with more publications (988, 39%) and more citations (36,416, 63%) followed by the United States with 423 articles (16.7%) and 7,458 citations (12.6%). The coauthorship network identified 10,756 authors. According to the multivariate analysis, both confirmed cases and deaths were significantly correlated with the number of publications per country (corrected by population size and gross domestic product). Conclusion: The correlation with the number of publications suggests that cases and deaths had some impact on the medical literature, reflecting how rapidly the scientific community has been on the frontline in the fight against COVID-19.

Resumen Antecedentes: La pandemia de COVID-19 ha desatado una avalancha de publicaciones, con diferentes fuentes y de impacto desigual. Consideramos que los primeros tres meses son cruciales para comprender cómo se ha generado el conocimiento mediante la realización de un análisis bibliométrico, incluyendo las citas a estos artículos para guiar a los investigadores en la exploración de este campo y evaluar la relación entre los casos confirmados de COVID-19, y las muertes con el número de artículos por país. Métodos: Realizamos un análisis del número de artículos de PubMed (enero-marzo) por país, enfoque, e impacto (citas de Scopus durante los primeros seis meses). Se implementó regresión lineal múltiple para analizar la correlación entre el número de publicaciones y los casos y muertes confirmados. Resultados: Se analizaron un total de 2,530 publicaciones con 59104 citas (23,4 citas/artículo), escritas por autores de 67 países. China fue el país con más publicaciones (988, 39%) y más citas (36,416, 63%), seguido de Estados Unidos con 423 artículos (16.7%) y 7,458 citas (12.6%). La red de coautoría identificó a 10,756 autores. Según el análisis multivariado, tanto los casos confirmados como las defunciones se correlacionaron significativamente con el número de publicaciones por país (corregido por el tamaño de la población y el producto interno bruto). Conclusión: La correlación sugiere que los casos y muertes tuvieron un impacto en la literatura médica, esto refleja la prontitud con que la comunidad científica ha estado en el frente de batalla contra COVID-19.

RESUMO Objetivo: Avaliar a produção científica relacionada à oftalmologia e à visão na América Latina durante o período de 2006 a 2015. Métodos: As bases de dados PubMed, Lilacs (Bireme), Google Scholar, SciELO e Medigraphic foram utilizadas para realizar um estudo retrospectivo, descritivo e comparativo. Resultados: Foram identificados 1,510 artigos, sendo que o Brasil foi a principal fonte de produção quantitativa, com uma média de 85,4 artigos por ano; o México aparece em segundo lugar com 27,4 e a Argentina em terceiro lugar com 11,1 artigos por ano. Quarenta e um por cento dos artigos foram publicados em inglês; 28,1% trataram da subespecialidade da retina; e a principal fonte institucional de publicações foram as universidades, com 63%. A frequência de primeiros autores do sexo masculino foi de 58,9%, e a revista Arquivos Brasileiros de Oftalmologia representou 36,42% dos artigos identificados. Conclusões: O Brasil ocupa o primeiro lugar na América Latina na produção científica oftalmológica. Os bancos de dados não indexados no PubMed foram incluídos em nosso estudo, representam quase metade dos pesquisadores em oftalmologia na América Latina.

ABSTRACT Purpose: To assess scientific production related to ophthalmology and vision in Latin America during the period from 2006 to 2015. Methods: The PubMed, Lilacs (Bireme), Google Scholar, SciELO, and Medigraphic databases were evaluated for this retrospective, descriptive, and comparative study. Results: A total of 1,510 articles was identified. Brazil was the leader in quantitative production in ophthalmology, averaging 85.4 articles per year. Mexico was in second place with 27.4, and Argentina was in third place with 11.1 articles per year. Forty-one percent of articles were published in English, 28.1% dealt with the subspecialty of the retina, and 63% were published by researchers affiliated with universities. The frequency of male first authors was 58.9%, and the journal Arquivos Brasileiros de Oftalmologia accounted for 36.42% of the identified articles. Conclusions: Brazil stands in first place in Latin America in ophthalmologic scientific production. Nearly half of the researchers in ophthalmology in Latin America included in our study were listed in databases other than PubMed.

The databases PubMed, Cochrane, Scopus and Google School were used to perform a systematic review of the state of the art about the metabolic complications resulting from bariatric surgery, reflecting on the need for an adequate preoperative evaluation and compliance with accurate indications taking into account that physiological changes will occur, and that, although they will have a positive impact on most patients, this will produce metabolic disorders that must be taken into account for prevention and prediction. An outlined is presented of the surgical principles, objectives and classifications for this type of surgery. The complications are exposed, with emphasis on the metabolic aspects and contraindications of this type of intervention. The bariatric surgery has been concluded to be a suitable procedure for the treatment of obesity and control of some metabolic aspects, but it is capable of producing other new aspects that, if not taken into account, could lead to the failure of its results.

Se utiliza la base de datos Pub Med, Cochraine, Scopus y Google Escolar para realizar una revisión sistemática del estado del arte de las complicaciones metabólicas derivadas de la cirugía bariátrica. Se realiza una reflexión de la necesidad de evaluar de forma adecuada la preoperación y cumplir con las indicaciones precisas. Debe tenerse en cuanta que se producirán cambios fisiológicos que, si bien intervendrán de manera positiva en la mayor parte de los pacientes, les producirá trastornos en el metabolismo que deben de ser tenidos en cuenta para su prevención y predicción. Se exponen los principios quirúrgicos, objetivos y clasificaciones de este tipo de cirugía. Se exponen las complicaciones con énfasis en los aspectos metabólicos y las contraindicaciones de este tipo de intervención. Se concluye que la cirugía bariátrica es un procedimiento adecuado para el tratamiento de la obesidad y control de algunos aspectos metabólicos, pero es capaz de originar nuevos aspectos, que, de no tenerse en cuenta, podrían hacer fracasar sus resultados.