RESUMEN
RESUMO Objetivo: Avaliar a prevalência de miopia em crianças de escolas públicas da Região Metropolitana de Porto Alegre (RS, Brasil). Métodos: Estudo transversal prospectivo, com amostra de 330 estudantes de escolas públicas da Região Metropolitana de Porto Alegre entre 5 e 20 anos de idade. Os escolares foram submetidos à avaliação oftalmológica completa, incluindo acuidade visual com e sem correção, autorrefração dinâmica e estática, refração subjetiva dinâmica e estática sob cicloplegia e medida do diâmetro axial. Um questionário sobre tempo de uso de telas diário foi aplicado. Os desfechos foram prevalência de miopia, alta miopia e baixa miopia. O teste do qui-quadrado de Pearson foi utilizado para avaliar a relação da prevalência com a variável contemplada no questionário. Resultados: A prevalência de miopia foi de 17,4% (IC95% 13,8-21,7%). Baixa e alta miopia corresponderam a 15,2% (IC95% 11,9-19,3%) e 2,1% (IC95% 1,1-4,1%), respectivamente. Conclusão: Essa é a maior prevalência de miopia sob cicloplegia encontrada no Brasil até a presente data. Outros estudos para entender a prevalência e a evolução da ametropia no país são necessários.
ABSTRACT Objective: To assess myopia prevalence in children from public schools of the metropolitan region of Porto Alegre, in Rio Grande do Sul. Methods: It is a prospective cross-sectional study with a sample of 330 children from public schools of the metropolitan region of Porto Alegre, from 5 to 20 years old. The students were submitted to an ophthalmological evaluation including auto-refractor measurements, best corrected and uncorrected visual acuity, subjective refraction under cycloplegia and axial length. The outcomes were prevalence of myopia, high myopia, and low myopia. Pearson's chi-squared test was used to assess the relationship between prevalence and the variable contemplated in the questionnaire. Results: The prevalence of myopia was 17.4% (CI 13.8 - 21.7%). Low and high myopia corresponded to 15.2% (CI 11.9 - 19.3%) and 2.1% (CI 1.1 - 4.1%), respectively. Conclusion: This is the highest prevalence of myopia under cycloplegia found in Brazil to date. Other studies are necessary to understand the prevalence and evolution of the condition in the country.
Asunto(s)
Humanos , Masculino , Femenino , Preescolar , Niño , Adolescente , Adulto , Estudiantes/estadística & datos numéricos , Miopía/epidemiología , Instituciones Académicas/estadística & datos numéricos , Brasil , Prevalencia , Estudios Transversales , Estudios ProspectivosRESUMEN
Myocardial injury (MI) is frequent in critically ill patients with COVID-19, but its pathogenesis remains unclear. We hypothesized that MI is not solely due to viral infection by SARS-CoV-2 but rather due to the common pathophysiological mechanisms associated with severe pulmonary infections and respiratory failure. This contemporary cohort study was designed to compare the incidence of MI in patients with acute respiratory failure caused by COVID-19 to patients with other pulmonary infections. In addition, we aimed to investigate whether MI was a distinct risk factor for in-hospital mortality in patients with COVID-19 compared to those with non-COVID-19 infections. This study included 1444 patients with COVID-19 (55.5% men; age 58 (46;68) years) and 182 patients with other pulmonary infections (46.9% men; age 62 (44;73) years). The incidence of MI at ICU admission was lower in COVID-19 patients (36.4%) compared to non-COVID-19 patients (56%), and this difference persisted after adjusting for age, sex, coronary artery disease, heart failure, SOFA score, lactate, and C-reactive protein (RR 0.84 (95% CI, 0.71-0.99)). MI at ICU admission was associated with a 59% increase in mortality (RR 1.59 (1.36-1.86); p < 0.001), and there was no significant difference in the mortality between patients with COVID-19 and those with other pulmonary infections (p = 0.271). We concluded that MI is less frequent in patients with critical COVID-19 pneumonia and respiratory failure compared to those with other types of pneumonia. The occurrence of MI is a significant risk factor for in-hospital mortality, regardless of the etiology of the pulmonary infection.