Vía aérea unificada: asociación entre rinosinusitis crónica y asma bronquial / Unified airway: association between chronic rhinosinusitis and bronchial asthma

Bajo la teoría de vía aérea unificada, se ha observado que el asma y la rinosinusitis crónica (RSC) tienen una estrecha relación, con efectos importantes de una enfermedad sobre el control de la otra. El objetivo de esta revisión bibliográfica es clarificar cómo ambas enfermedades se relacionan desde su origen, epidemiología, fisiopatología y tratamiento. Sabemos que la presencia de RSC se asocia con peores resultados del asma, mayor frecuencia de exacerbaciones, hospitalizaciones y mayor uso de corticoides sistémicos. Varios mecanismos parecen tener un rol en la disfunción de la vía aérea inferior en pacientes con RSC, dentro de los cuales se plantea que la respuesta inflamatoria en común de tipo Th2 juega un papel principal. Existe amplia literatura respecto al efecto que tiene el tratamiento de la RSC en el control del asma, en esta revisión se expondrá la evidencia disponible del tratamiento médico con corticoides nasales, montelukast y macrólidos, así como también del tratamiento quirúrgico de la RSC y el uso de biológicos.

Under the unified airway theory, asthma and chronic rhinosinusitis (CRS) have a close relationship, with significant effects of one disease on the control of the other. This bibliographic review aims to clarify how both diseases relate to each other from their origin, epidemiology, pathophysiology, and treatment. CRS is associated with worse asthma outcomes, higher frequency of exacerbations, hospitalizations, and increased use of systemic corticosteroids. Several mechanisms play a role in lower airway dysfunction in patients with CRS, among which the common Th2-type inflammatory response plays a substantial role. There is extensive literature regarding the effect of the treatment of CRS in the control of asthma. We present the available evidence regarding the effect of medical treatment with nasal corticosteroids, montelukast, and macrolides, as well as the surgical treatment and use of biologics.

Variación de tasa de egreso hospitalario por asma entre el 2018-2021 en Chile / Variation in hospital discharge rate for asthma between 2018-2021 in Chile

Introducción: El asma es una enfermedad inflamatoria crónica de la vía aérea que presenta obstrucción bronquial, la cual puede desencadenar exacerbaciones que pueden llegar a la hospitalización. Objetivos: Describir la tasa de egreso hospitalario por asma entre los años 2018-2021 en Chile según sexo y grupo etario. Materiales y métodos: Estudio ecológico sobre egresos hospitalarios por asma en el periodo 2018-2021 en Chile (n=11.724), según sexo y grupo etario. Se utilizaron datos obtenidos por el Departamento de Estadística e Información de Salud para realizar la estadística descriptiva y cálculo de la Tasa de Egreso Hospitalario (TEH). No requirió la autorización del comité de ética. Resultados: Se evidenció una TEH del período de 16,67 casos por 100.000 habitantes, presentando una disminución del 55,18% en la tasa de egreso hospitalario entre el año 2019 y 2020. El sexo femenino presentó una mayor TEH con 17,71 por cada 100.000 habitantes. El grupo etario con la mayor cantidad de egresos hospitalarios fue el de 5-9 años, con un 25,07% (2.940). Conclusión: La disminución de TEH expuesta se podría explicar en el contexto de la pandemia de COVID-19 y las medidas sanitarias implementadas, las cuales disminuyeron directamente la circulación viral, evitando complicaciones. Con respecto al sexo, se condice con la literatura internacional, siendo la mayor cantidad de hospitalizaciones en el género femenino, como también una mayor proporción de hospitalizaciones en niños, especialmente en edades de 5-10 años, posiblemente secundario a iniciar el entendimiento de su enfermedad crónica. En conclusión, los pacientes pediátricos serían los mayores beneficiados de políticas públicas para la educación de la población.

Introduction: Asthma is a chronic inflammatory disease of the airway that presents bronchial obstruction, which can trigger exacerbations and lead to hospitalization. Objectives: To describe the hospital discharge rate for asthma between the years 2018-2021 in Chile according to sex and age group. Materials and methods: Ecological study on hospital discharges for asthma in the period 2018-2021 in Chile (n=11,724), according to sex and age group. Data obtained from the "Departamento de Estadística e Información de Salud" was used to perform descriptive statistics and calculate the hospital discharge rate or TEH. No ethics committee approval was required. Results: A TEH of the period of 16.67 cases per 100,000 inhabitants was evidenced, showing a decrease of 55.18% in the hospital discharge rate between 2019 and 2020. The female sex presented a higher TEH with 17.71 per 100,000 population. The age group with the highest number of hospital discharges was 5-9 years with 25.07% (2,940). Conclusion: The observed decrease in TEH could be explained in the context of the COVID-19 pandemic and the implemented health measures, which directly reduced viral circulation, avoiding complications. Regarding gender, it is consistent with international literature, with the highest number of hospitalizations occurring in females, as well as a higher proportion of hospitalizations in children, especially in the 5-10 age group, possibly due to an increased understanding of their chronic disease. In conclusion, pediatric patients would be the greatest beneficiaries of public policies for the education of the population.

Clinical, laboratory, and functional characteristics of asthma-COPD overlap in patients with a primary diagnosis of COPD / Características clínicas, laboratoriais e funcionais da sobreposição asma-DPOC em pacientes previamente diagnosticados com DPOC

ABSTRACT Objective: To evaluate the frequency of asthma-COPD overlap (ACO) in patients with COPD and to compare, from a clinical, laboratory, and functional point of view, patients with and without ACO, according to different diagnostic criteria. Methods: The participants underwent evaluation by a pulmonologist, together with spirometry and blood tests. All of the patients were instructed to record their PEF twice a day. The diagnosis of ACO was based on the Proyecto Latinoamericano de Investigación en Obstrucción Pulmonar (PLATINO, Latin American Project for the Investigation of Obstructive Lung Disease) criteria, the American Thoracic Society (ATS) Roundtable criteria, and the Spanish criteria. We investigated patient histories of exacerbations and hospitalizations, after which we applied the COPD Assessment Test and the modified Medical Research Council scale, to classify risk and symptoms in accordance with the GOLD criteria. Results: Of the 51 COPD patients, 14 (27.5%), 8 (12.2%), and 18 (40.0) were diagnosed with ACO on the basis of the PLATINO, ATS Roundtable, and Spanish criteria, respectively. The values for pre-bronchodilator FVC, post-bronchodilator FVC, and pre-bronchodilator FEV1 were significantly lower among the patients with ACO than among those with COPD only (1.9 ± 0.4 L vs. 2.4 ± 0.7 L, 2.1 ± 0.5 L vs. 2.5 ± 0.8 L, and 1.0 ± 0.3 L vs. 1.3 ± 0.5 L, respectively). When the Spanish criteria were applied, IgE levels were significantly higher among the patients with ACO than among those with COPD only (363.7 ± 525.9 kU/L vs. 58.2 ± 81.6 kU/L). A history of asthma was more common among the patients with ACO (p < 0.001 for all criteria). Conclusions: In our sample, patients with ACO were more likely to report previous episodes of asthma and had worse lung function than did those with COPD only. The ATS Roundtable criteria appear to be the most judicious, although concordance was greatest between the PLATINO and the Spanish criteria.

RESUMO Objetivo: Avaliar a frequência de asthma-COPD overlap (ACO, sobreposição asma-DPOC) em pacientes com DPOC e comparar, do ponto de vista clínico, laboratorial e funcional, os pacientes com e sem essa sobreposição conforme diferentes critérios diagnósticos. Métodos: Os participantes foram submetidos à avaliação com pneumologista, espirometria e exame sanguíneo, sendo orientados a manter o registro do PFE duas vezes ao dia. O diagnóstico de ACO deu-se através dos critérios Projeto Latino-Americano de Investigação em Obstrução Pulmonar (PLATINO), American Thoracic Society (ATS) Roundtable e Espanhol. Foram investigados os históricos de exacerbações e hospitalizações e aplicados os instrumentos COPD Assessment Test e escala Medical Research Council modificada, utilizados para a classificação de risco e sintomas da GOLD. Resultados: Entre os 51 pacientes com DPOC, 14 (27,5%), 8 (12,2%) e 18 (40,0) foram diagnosticados com ACO segundo os critérios PLATINO, ATS Roundtable e Espanhol, respectivamente. Pacientes com sobreposição significativamente apresentaram pior CVF pré-broncodilatador (1,9 ± 0,4 L vs. 2,4 ± 0,7 L), CVF pós-broncodilatador (2,1 ± 0,5 L vs. 2,5 ± 0,8 L) e VEF1 pré-broncodilatador (1,0 ± 0,3 L vs. 1,3 ± 0,5 L) quando comparados a pacientes com DPOC. Os níveis de IgE foram significativamente mais elevados em pacientes com sobreposição diagnosticados pelo critério Espanhol (363,7 ± 525,9 kU/L vs. 58,2 ± 81,6 kU/L). O histórico de asma foi mais frequente em pacientes com a sobreposição (p < 0,001 para todos os critérios). Conclusões: Nesta amostra, pacientes com ACO relataram asma prévia com maior frequência e possuíam pior função pulmonar quando comparados a pacientes com DPOC. O critério ATS Roundtable aparenta ser o mais criterioso em sua definição, enquanto os critérios PLATINO e Espanhol apresentaram maior concordância entre si.

Prevalence and impact of asthma in schoolchildren in the city of Caxias do Sul-RS / Prevalência e impacto da asma em escolares do município de Caxias do Sul-RS

Abstract Objective: To analyze the prevalence and impact of asthma in schoolchildren from the city of Caxias do Sul, RS, Brazil. Methods: Cross-sectional observational and case-control study with children and adolescents between 7 and 15 years old, from public schools in Caxias do Sul, RS. The study is composed of two phases: Phase I analyzed the prevalence of asthma in the delimited population, investigating 1915 schoolchildren; Phase II quality of life questionnaires, asthma control and classification (for the asthmatic group), physical activity, school performance, pulmonary function tests and anthropometric measures were applied to 266 asthmatics and 288 controls. Results: The estimated prevalence of asthma was 16.1%. In the comparison between asthmatics and nonasthmatics premature birth (p < 0.001) and diagnosis of another chronic disease at birth (p < 0.001) were found. Regarding pulmonary function, significant differences were found in the values between groups in FEV1, FEV1/FVC and forced expiratory flow in the 25 and 75% (FEF25-75%), being that asthmatics presented lower values. Among asthmatics, 133 (50.8%) did not have the disease controlled. In the anthropometric variables, significant differences were observed, with higher values in controls, in the the waist-to-height ratio (p = 0.009) and in the perception of health (p < 0.001). Quality of life is lower in asthmatics in the physical well-being domain (p = 0.001) and in the total score (p = 0.016). The total school performance score did not present a statistically significant difference between the groups. Conclusion: The prevalence of asthma is similar to that of other industrialized urban centers and may negatively affect some areas of the development of schoolchildren.

Resumo Objetivo: Analisar a prevalência e o impacto da asma em escolares do município de Caxias do Sul-RS. Métodos: Estudo analítico observacional transversal e caso-controle, com crianças e adolescentes entre sete e 15 anos, de escolas da rede pública de Caxias do Sul-RS. O estudo é composto por duas fases: Fase I analisou a prevalência da asma na população delimitada e investigou 1.915 escolares; Fase II foram aplicados a 266 asmáticos e 288 controles, questionários de qualidade de vida, classificação e controle da asma (para o grupo asmático), atividade física, desempenho escolar, espirometria e antropometria. Resultados: A prevalência de asma estimada foi de 16,1%. Na comparação entre asmáticos e não asmáticos foram encontradas diferenças na prematuridade (p< 0,001) e ter diagnóstico de outra doença crônica ao nascer (p< 0,001). Na espirometria foram encontradas diferenças significativas entre os grupos nos valores de VEF1, VEF1/CVF e fluxo expiratório forçado nos momentos 25 e 75% (FEF25-75%); os asmáticos apresentaram valores inferiores. Entre os asmáticos, 133 (50,8%) não tem a doença controlada. Nas variáveis antropométricas foram observadas diferenças significativas, com valores superiores entre os controles, na classificação razão cintura/estatura (p = 0,009) e na percepção da própria saúde (p< 0,001). A qualidade de vida é menor nos asmáticos no domínio bem estar físico (p = 0,001) e no escore total (p = 0,016). O escore total do desempenho escolar não apresentou diferença estatisticamente significativa entre os grupos de estudo. Conclusão: A prevalência de asma se assemelha à de outros centros urbanos industrializados e pode impactar negativamente alguns domínios do desenvolvimento dos escolares.

Impact of comorbidities in mexican SARS-COV-2-positive patients: a retrospective analysis in a national cohort

ABSTRACT Background: The coronavirus disease 2019 outbreak is a significant challenge for health-care systems around the world. Objective: The objective of the study was to assess the impact of comorbidities on the case fatality rate (CFR) and the development of adverse events in patients positive for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in the Mexican population. Materials and methods: We analyzed the data from 13,842 laboratory-confirmed SARS-CoV-2 patients in Mexico between January 1, 2020, and April 25, 2020. We investigated the risk of death and the development of adverse events (hospitalization, pneumonia, orotracheal intubation, and intensive care unit [ICU] admission), comparing the number of comorbidities of each patient. Results: The patient mean age was 46.6 ± 15.6 years, 42.3% (n = 5853) of the cases were women, 38.8% of patients were hospitalized, 4.4% were intubated, 29.6% developed pneumonia, and 4.4% had critical illness. The CFR was 9.4%. The risk of hospitalization (odds ratio [OR] = 3.1, 95% confidence interval [CI]: 2.7-3.7), pneumonia (OR = 3.02, 95% CI: 2.6-3.5), ICU admission (OR = 2, 95% CI: 1.5-2.7), and CFR (hazard ratio = 3.5, 95% CI: 2.9-4.2) was higher in patients with three or more comorbidities than in patients with 1, 2, or with no comorbidities. Conclusions: The number of comorbidities may be a determining factor in the clinical course and its outcomes in SARS-CoV-2-positive patients.

Lifetime overweight and adult asthma: 1978/1979 Ribeirão Preto Birth Cohort, São Paulo, Brazil / Sobrepeso ao longo da vida e asma na idade adulta: Coorte de Nascimento de 1978/1979, Ribeirão Preto, São Paulo, Brasil / Sobrepeso a lo largo de la vida y asma en adultos: Cohorte de Nacimientos de 1978/1979 en Ribeirão Preto, São Paulo, Brasil

Studies focusing on obesity and asthma frequently consider the weight at a given time; thus, modeling pathways through lifetime overweight may contribute to elucidate temporal aspects in this relationship. This study modeled the pathways in the association of lifetime overweight with asthma in adult life, using data from the 1978/1979 Birth Cohort, Ribeirão Preto, São Paulo, Brazil (n = 2,063) at birth (baseline), school age (9/11 years) and adult age (23/25 years). A theoretical model was proposed to explore the effects of lifetime overweight on asthma in adult life analyzed by structural equation modeling. Parental obesity (SC - standardized coefficenttotal = 0.211, p < 0.001; SCdirect = 0.115, p = 0.007) and overweight at school age (SCtotal = 0.565, p < 0.0001; SCdirect = 0.565, p < 0.0001) were associated with overweight in adult life. Parental obesity (SCdirect = 0.105, p = 0.047) and nutritional status at birth (SCtotal = -0.124, p = 0.009; SCdirect = -0.131, p = 0.007) were associated with asthma in adult life. A higher "current adult socieconomic situation" was inversely associated to overweight (SCdirect = -0.171, p = 0.020) and to asthma in adult life (SCtotal = -0.179, p = 0.041; SCdirect = -0.182, p = 0.039). Parental obesity showed a transgenerational effect in weight, triggering to childhood and adulthood overweight. Parallel to underweight at birth, parental obesity was also a risk to asthma in adult life. While, the socioeconomic status in adult life protected from both, overweight and asthma.

Os estudos sobre obesidade e asma frequentemente analisam o peso em um determinado momento; portanto, a modelagem de trajetórias de sobrepeso ao longo da vida pode ajudar a explicar os aspectos temporais dessa relação. O estudo atual modelou as trajetórias na associação entre história de sobrepeso e asma na vida adulta, utilizando dados da Coorte de Nascimento de 1978/1979, Ribeirão Preto, São Paulo, Brasil (n = 2.063), coletados ao nascer (linha de base), na idade escolar (9-11 anos) e na idade adulta (23-25 anos). Foi proposto um modelo teórico para explorar a associação entre o sobrepeso ao longo da vida e asma na vida adulta, analisada pela modelagem de equações estruturais. Obesidade dos pais (CP - coeficiente padronizadoglobal = 0,211, p < 0,001; CPdireto = 0,115; p = 0,007) e sobrepeso na idade escolar (CPglobal = 0,565; p < 0,0001; CPdireto = 0,565; p < 0,0001) mostraram associação com sobrepeso na idade adulta. Obesidade dos pais (CPdireto = 0,105; p = 0,047) e estado nutricional ao nascer (CPglobal = - 0,124; p = 0,009; CPdireto = -0,131; p = 0,007) mostraram associação com asma na idade adulta. "Condição socioeconômica" mais alta na vida adulta mostrou associação inversa com sobrepeso (CPdireto = -0,171, p = 0,020) e com asma na vida adulta (CPglobal = -0,179; p = 0,041; CPdireto = -0,182; p = 0,039). Obesidade dos pais mostrou um efeito transgeracional sobre o peso, como gatilho na infância e no sobrepeso na vida adulta. Em paralelo ao baixo peso ao nascer, a obesidade dos pais também esteve associada com asma na vida adulta. A condição socioeconômica na vida adulta mostrou efeito protetor contra sobrepeso e asma.

Los estudios que se centran en la obesidad y asma frecuentemente consideran el peso en un determinado momento; por este motivo, la creación de modelos de patrones de sobrepeso a lo largo de la vida quizás puede contribuir a elucidar aspectos temporales en esta relación. Este estudio modeló los patrones en la asociación de sobrepeso a lo largo de la vida con el asma en etapa adulta, usando datos de una cohorte nacimientos de 1978/1979, en Ribeirão Preto, São Paulo, Brasil (n = 2.063), considerando: nacimiento (base de referencia), edad escolar (9-11 años) y edad adulta (23-25 años). Se propuso un modelo teórico para analizar los efectos del sobrepeso a lo largo de la vida en el asma, durante la etapa adulta, analizado mediante modelos de ecuaciones estructurales. La obesidad de los padres (CE - coeficiente estandarizadototal = 0,211, p < 0,001; CEdirecto = 0,115; p = 0,007) y sobrepeso en edad escolar (CEtotal = 0,565; p < 0,0001; CEdirecto = 0,565; p < 0,0001) estuvieron asociados con sobrepeso en la vida adulta. La obesidad de los padres (CEdirecto = 0,105; p = 0,047) y el estatus nutricional al nacer (CEtotal = - 0,124; p = 0,009; CEdirecto = -0,131; p = 0,007) estuvieron asociados con el asma en la vida adulta. Un "condición socioeconómica actual en la etapa adulta" más alto estuvo inversamente asociado con el sobrepeso (CEdirecto = -0,171; p = 0,020) y al asma en la vida adulta (CEtotal = -0,179; p = 0,041; CEdirect = -0,182; p = 0,039). La obesidad de los padres mostró un efecto transgeneracional en el peso, desencadenando sobrepeso en la infancia y etapa adulta. Junto al bajo peso al nacer, la obesidad de los padres fue también un riesgo para el asma en la etapa adulta. Mientras que el estatus socioeconómico en la etapa adulta protegía tanto ante el sobrepeso como el asma.

Características clínicas e fatores associados à asma grave em Salvador, Brasil / Clinical features and associated factors with severe asthma in Salvador, Brazil

RESUMO Objetivo Descrever características clínicas e identificar fatores associados a maior gravidade da asma, em uma amostra de pacientes acompanhados em um centro de referência em Salvador. Métodos Estudo transversal de 473 adultos, acompanhados regularmente no Programa para Controle da Asma na Bahia (ProAR), reavaliados de forma sistemática entre 2013 e 2015. Os pacientes foram admitidos por preencher critérios anteriores de asma grave e reclassificados de acordo com a definição mais atual, proposta por um documento conjunto da European Respiratory Society/American Thoracic Society (ERS/ATS 2014). Resultados Foram reclassificados como portadores de asma grave pelos critérios da ATS/ERS (AG-ERS/ATS) 88/473 (18%). Destes, 87% eram mulheres, 48% obesos, com mediana do índice de massa corporal (IMC) de 29 kg/m2 (IQ 26-34), 99% tinham sintomas de rinite crônica e 83%, sintomas de doença do refluxo gastroesofágico (DRGE). Nenhum se declarou fumante atual. Os principais corticosteroides inalatórios utilizados foram beclometasona (88%) e budesonida (69%). A maioria relatou adequada adesão (77%) e a minoria das avaliações (0,6%) revelou erros graves na técnica inalatória. A mediana do volume expiratório forçado no primeiro segundo pós-broncodilatador (VEF1pós-BD) foi 67% do predito (IQ 55-80). A mediana do número de eosinófilos no sangue periférico foi menor nos pacientes com AG-ERS/ATS [209 células/mm3 (IQ 116-321)] do que nos demais pacientes estudados [258 células/mm3 (IQ 154-403)]. Sintomas de doença do refluxo gastroesofágico (DRGE) foram associados a mais gravidade [OR = 2,2; IC95% (1,2-4,2)]. Conclusões Neste grupo de pacientes, sintomas de RGE foram associados a AG-ERS/ATS e contagem de eosinófilos > 260 células/mm3 esteve associada a 42% menos chance de AG-ERS/ATS.

ABSTRACT Objective To describe the clinical features and to identify factors associated with significant severe asthma in samples of patients followed in a reference center in Salvador. Methods A cross-sectional study of 473 adults, regularly followed in the "Asthma Control Program" in Bahia (Programa de Controle da Asma e da Rinite Alérgica na Bahia (ProAR)), reassessed systematically between 2013 and 2015. The patients were admitted for meeting previous criteria of severe asthma and were reclassified according to the most current definition proposed by a joint document of the "European Respiratory Society/American Thoracic Society" (ERS/ATS) (ERS/ATS 2014). Results Only 88/473 (18%) were reclassified as having severe asthma by ERS/ATS criteria (SA-ERS/ATS). Among these patients, 87% were women, 48% obese, with a median Body Mass Index (BMI) of 29 kg·m2 (IQ 26-34), furthermore, 99% had symptoms of chronic rhinitis and 83% had symptoms of Gastroesophageal Reflux Disease (GERD). None of the 88 patients claimed to be current smokers. The most frequently corticosteroids were beclomethasone dipropionate (BDP) (88%) and budesonide (BUD) (69%). The majority of the evaluations reported adequate adherence (77%), however, the minority (0,6%) detected serious errors in inhalation techniques. The median Forced Expiratory Volume (FEV1) associated with post-bronchodilator test (post-BD) was 67% predicted (IQ 55-80). The median number of eosinophils in the peripheral blood was lower in patients with SA-ERS/ATS (258 cells/mm3 (IQ 116-321) than in the other patients studied [258 cells/mm3 (IQ 154-403)]. Gastroesophageal reflux symptoms were associated with a higher severity [OR = 2.2 95% CI (1.2-4.2)]. Conclusion In this group of patients, symptoms of GERD were associated with SA-ERS/ATS and eosinophil count > 260 cells/mm3 were associated 42% with less chance SA-ERS/ATS

Characteristics of primary care and rates of pediatric hospitalizations in Brazil

ABSTRACT OBJECTIVE To evaluate the association among characteristics of primary health care center (PHCC) with hospitalizations for primary care sensitive conditions (PCSC) in Brazil. METHOD In this study, a cross-sectional ecological study was performed. This study analyzed the 27 capitals of Brazil's federative units. Data were aggregated from the following open access databases: National Program for Access and Quality Improvement in Primary Care, the Hospital Information System of Brazilian Unified Health System and Annual Population Census conducted by the Brazilian Institute of Geography and Statistics. Associations were estimated among characteristics of primary care with the number of three PCSC as the leading causes of hospitalization in children under-5 population in Brazil: asthma, diarrhea, and pneumonia. RESULTS In general, PHCC showed limited structural adequacy (37.3%) for pediatric care in Brazil. The capitals in South and Southeast regions had the best structure whereas the North and Northeast had the worst. Fewer PCSC hospitalizations were significantly associated with PHCC which presented appropriate equipment (RR: 0.98; 95%CI: 0.97-0.99), structural conditions (RR: 0.98; 95%CI: 0.97-0.99), and signage/identification of professionals and facilities (RR: 0.98; 95%CI: 0.97-0.99). Higher PCSC hospitalizations were significantly associated with PHCC with more physicians (RR: 1.23, 95%CI: 1.02-1.48), it forms (RR: 1.01, 95%CI: 1.01-1.02), and more medications (RR: 1.02, 95%CI: 1.01-1.03) CONCLUSION Infrastructural adequacy of PHCC was associated with less PCSC hospitalizations, while availability medical professional and medications were associated with higher PCSC hospitalizations.

Corticosteroides inhalados en pacientes con asma leve intermitente / Inhaled corticosteroids in mild intermittent asthma

Una joven de 23 años con asma leve intermitente se presenta a la consulta médica. Se plantea cuál es la mejor alternativa para su tratamiento: el uso de broncodilatadores de acción corta a demanda (SABA, por sus iniciales en inglés) o de broncodilatadores de acción rápida en asociación con corticoides inhalatorios (ICS/FABA, por sus iniciales en inglés) a demanda. Tras revisar la bibliografía se encontraron una revisión sistemática y dos ensayos clínicos que indican que los ICS/FABA serían superiores a los SABA; sin embargo este efecto fue solamente estudiado en casos de asma persistente.Es importante discutir estos hallazgos con los pacientes, junto a sus implicancias económicas, incorporando sus valores y preferencias a la hora de tomar una decisión terapéutica. (AU)

A 23-year-old woman with mild intermittent asthma comes to the doctor's office. The best alternative for treatment is considered: the use of short-acting bronchodilators on demand (SABA) or fast-acting bronchodilators in association with inhaled corticosteroids (ICS/FABA) on demand. After a literature search, a systematic review and two clinical trials werefound, which indicate that the ICS/FABA would be superior to the SABA; however, this effect was only studied in cases of persistent asthma. It is important to discuss these findings with the patients, alongside with their economic implications,incorporating their values and preferences when making a therapeutic decision.

ERICA: smoking is associated with more severe asthma in Brazilian adolescents / ERICA: tabagismo está associado a asma mais grave em adolescentes brasileiros

Abstract Objective: To investigate the association between smoking and asthma, and possible associated factors in Brazilian adolescents. Methods: A cross-sectional, national, school-based study with adolescents aged 12-17 years, participants in the Study of Cardiovascular Risks in Adolescents (Estudo de Riscos Cardiovasculares em Adolescentes - ERICA). A total of 66,394 participants answered a self-administered questionnaire with questions about asthma, smoking, lifestyle and sociodemographic variables. Bivariate analysis between Current Asthma (CA) and Severe Asthma (SA) and the other study variables were performed using Chi-squared. Then, the crude and adjusted Prevalence Ratios (PR), and respective 95% Confidence Intervals (95% CI) of current asthma/severe asthma and smoking variables, corrected for sociodemographic and lifestyle variables, were estimated using generalized linear models with Poisson regression, logit link, and robust variance. Results: The prevalence of current asthma and severe asthma were significantly higher in adolescents who were exposed to: experimentation (current asthma: PR = 1.78, 95% CI: 1.51-2.09; severe asthma: PR = 2.01; 95% CI: 1.35-2.98); current smoking (current asthma: PR = 2.08, 95% CI: 1.65-2.64; severe asthma: PR = 2.29; 95% CI: 1.38-3.82); regular smoking (current asthma: PR = 2.25, 95% CI: 1.64-3.07; severe asthma: PR: 2.41; 95% CI: 1.23-4.73); and passive smoking (current asthma: PR = 1.47, 95% CI: 1.27-1.67; severe asthma: PR = 1.66; 95% CI: 1.19-2.32); these associations remained significant after adjustment. Conclusions: Asthma and smoking were significantly associated in Brazilian adolescents, regardless of the sociodemographic and lifestyle factors, notably in those with more severe disease.

Resumo: Objetivo: Investigar a associação entre asma, tabagismo e possíveis fatores associados em adolescentes brasileiros. Métodos: Estudo transversal, nacional, de base escolar, envolveu adolescentes com 12 a 17 anos, participantes do Estudo de Riscos Cardiovasculares em Adolescentes (ERICA). Os 66.394 participantes responderam questionários autopreenchíveis com questões sobre asma, tabagismo, estilo de vida e dados sociodemográficos. Foram realizadas análises bivariadas entre asma ativa e asma grave e demais variáveis do estudo, com o uso de χ2. Em seguida, foram estimadas as razões de prevalência (RP) brutas e ajustadas e seus respectivos intervalos de confiança de 95% (IC 95%), entre asma ativa/asma grave e variáveis de tabagismo, corrigidas pelas variáveis sociodemográficas e de estilo de vida, através de modelos lineares generalizados com regressão de Poisson, função de ligação logarítmica e variância robusta. Resultados: A prevalência de asma ativa e asma grave foi significativamente mais elevada naqueles expostos a experimentação (asma ativa: RP = 1,78; IC 95%: 1,51-2,09; asma grave: RP = 2,01; IC 95%: 1,35-2,98); tabagismo atual (asma ativa: RP = 2,08; IC 95%: 1,65-2,64; asma grave: RP = 2,29; IC 95%: 1,38-3,82); tabagismo frequente (asma ativa: RP = 2,25; IC 95%: 1,64-3,07; AG = 2,41; IC 95%: 1,23-4,73) e tabagismo passivo (asma ativa: RP = 1,47; IC 95%: 1,27-1,67; asma grave: RP = 1,66; IC 95%: 1,19-2,32). As associações permaneceram significativas após ajuste. Conclusão: A asma e o tabagismo se associaram de modo significativo em adolescentes brasileiros independente de fatores sociodemográficos e estilo de vida, especialmente naqueles com doença mais grave.

¿Existe asociación entre asma y adiposidad en la población adulta chilena? / Association between adiposity and asthma

Background: In people with asthma, adiposity is associated with more symptoms and less control of the disease whereas on those without asthma adiposity is associated with a higher risk of developing the disease. Aim: To investigate the association between asthma and adiposity markers in Chilean adults. Material and Methods: Data from 5,499 adults older than 15-years-old from the Chilean National Health Survey 20162017 were analyzed. Quintiles of body-mass index (BMI) and waist circumference (WC) were used as a proxy of adiposity. The association between asthma and quintiles of BMI and WC was determined by logistic regression. Results: A higher BMI and WC was associated with a higher odds for asthma. This trend remained significant even after adjusting the models for socio-demographic factors, physical activity and smoking (Odds Ratio [OR] BMI: 1.13 [95% confidence intervals (CI): 1.04; 1.22], p < 0.01 and OR WC: 1.15 [95% IC: 1.06; 1.25], p < 0.01). Conclusions: A higher BMI and WC were positively associated with asthma.

Hiperlactatemia en pacientes hospitalizados por asma: Frecuencia e implicaciones clínicas / Hyperlactatemia in hospitalized patients with asthma. Frequency and clinical implications

Se ha descrito un incremento del lactato sanguíneo en algunos pacientes tratados por agudización del asma. Sin embargo, se desconoce su frecuencia y el significado clínico en la práctica clínica habitual. El objetivo del estudio ha sido evaluar las características asociadas a la presencia de hiperlactatemia en la gasometría arterial de pacientes que requirieron ingreso en la sala de neumonología por agudización del asma. Se realizó un estudio retrospectivo de las altas hospitalarias de un servicio de neumonología durante 3 años (2015 a 2017) analizando los valores del ácido láctico en la gasometría arterial y su posible relación con datos de antecedentes clínicos, de laboratorio, tratamiento, espirometría, estancia hospitalaria o uso de unidades de cuidados críticos. Se incluyeron 112 pacientes con 182 ingresos. Presentaron en alguna ocasión hiperlactatemia (> 2.2 mmol/l) 32 pacientes (29%). En 42 de los 182 ingresos (23%) se observó aumento de lactato, en quienes tenían mayor estancia hospitalaria (mediana 6 vs. 5 días, p = 0.013). En 8 de los 10 ingresos en unidades de cuidados críticos se observó hiperlactatemia, en general tras recibir el tratamiento broncodilatador. En las gasometrías con hiperlactatemia existía una correlación significativa entre lactato y bicarbonato (r = -0.417, p=0.003) y el exceso de base (r = -0.484, p < 0.001). La hiperlactatemia es relativamente frecuente en las gasometrías realizadas a los pacientes hospitalizados por asma (23% de los ingresos). Los ingresos con hiperlactatemia se asociaron a una internación más prolongada.

Increased levels of lactic acid have been described in patients treated for asthma exacerbation. However, the frequency and clinical significance of hyperlactatemia in real-world practice is unknown. The objective of the study was to evaluate the characteristics associated with hyperlactatemia in blood gas analysis of patients with asthma exacerbation hospitalized in a pulmonary department. This is a retrospective 3-year study (2015 to 2017) of patients discharged from the pulmonary department. The level of lactic acid in the blood gas test and the possible relationship with clinical, laboratory, therapy, spirometric values, hospitalization length and use of critical care resources were analyzed. A total of 112 patients with 182 admissions were included in the study. Thirty-two (29%) patients had hyperlactatemia in at least one blood gas analysis. Elevated lactic acid was observed in 42 of 182 admissions (23%), which had larger length hospital stay (median, 6 vs. 5 days, p = 0.013). Hyperlactatemia was present in 8 of 10 admissions in the critical care units, mainly after receiving bronchodilator therapy. There was a significant correlation between lactate level and bicarbonate level (r = -0.417, p = 0.003) and between lactate level and base excess (r = -0.484, p < 0.001) in cases with hiperlactatemia. Hyperlactatemia is a relatively frequent finding in blood gas analysis of patients hospitalized because of asthma (23% of admissions). These admissions with hiperlactatemia are associated with larger hospital length of stay.

Axial Spondyloarthritis after bariatric surgery: a 7-year retrospective analysis

Abstract Background: In recent decades, obesity has become a public health problem in many countries. The objective of this study was to evaluate the main joint and extra-articular manifestations related to spondyloarthritis (SpA) after bariatric surgery (BS) in a retrospective cohort. Methods: Demographic, clinical, laboratory and imaging data from nine patients whose SpA symptoms started after a BS have been described. Modified New York (mNY) criteria for ankylosing spondylitis (AS) and the Assessment of Spondyloarthritis International Society (ASAS) criteria for axial (ax-SpA) and peripheral (p-SpA) spondyloarthritis were applied. Results: The mean weight reduction after BS was 49.3 ±21.9 kg. The BS techniques were Roux-en-Y gastric bypass (n =8; 88.9%) and biliopancreatic diversion with duodenal switch (n = 1; 11.1%). Four (44.4%) patients had no axial or peripheral pain complaints before BS, while the other four (44.4%) had sporadic non-inflammatory back pain that had been attributed to obesity. One patient (11.1%) had persistent chronic back pain. In all nine cases, patients reported back pain onset or pattern (intensity or night pain) change after BS (mean time 14.7 ± 18 months). In addition, 8 of them (88.9%) were human leukocyte antigen (HLA)-B27 positive. All nine patients could be classified according to ASAS criteria as ax-SpA and five (55.6%) patients were classified as AS, according to the mNY criteria. Conclusion: Our data highlight a temporal link between SpA onset symptoms and the BS, suggesting a possible causal plausibility between the two events.

Varredura espaço-temporal para identificação de áreas de risco para hospitalização de crianças por asma em Mato Grosso / Space-time scan for identification of risk areas for hospitalization of children due to asthma in Mato Grosso, Brazil

RESUMO: Introdução: A asma resulta de complexa interação entre fatores genéticos, ambientais e socioeconômicos e representa um importante problema de saúde pública mundial. O objetivo deste trabalho foi identificar áreas prioritárias para ações de controle de asma em crianças. Método: Estudo ecológico no qual foi utilizada a varredura espaço-temporal. Selecionaram-se as autorizações de internação hospitalar pagas, não eletivas, de curta permanência (tipo 1), segundo o ano de ocorrência e o local de residência. Os períodos de análise compreendem os anos de 2001-2004 e 2005-2012. Resultados: O cluster primário de alto risco esteve localizado na região do entorno de Barra do Bugres nos dois períodos de estudo (risco relativo = 8,17, no primeiro período, e 10,37, no segundo). O número de clusters de alto risco aumentou de 8, no período 2001-2004, para 9, entre 2005-2012; enquanto os clusters de baixo risco diminuíram de 6, no período inicial, para 4, no último. As áreas prioritárias para atenção e intervenção às crianças com asma são a região do entorno de Barra do Bugres, que se manteve nos dois períodos com clusters primários de alto risco, e a borda leste e nordeste do estado, que apresentou aumento do risco. Além disso, houve aumento de 87% do número de municípios de alto risco e diminuição em 28% dos municípios de proteção. Conclusão: Conclui-se que as áreas prioritárias para a atenção à saúde, nas quais aumentou o risco de internação por asma em crianças, são o entorno de Barra do Bugres e Porto Estrela e a borda leste e nordeste do estado.

ABSTRACT: Introduction: Asthma is the result of a complex interaction between genetic, environmental and socioeconomic factors. It represents a serious global public health problem. The goal of this study was to identify geographic areas for priority actions in order to control of asthma in children. Method: Ecological study that space-time statistic Scan was used. Non-elective, short-stay (type 1) paid authorizations of hospitalizations were selected according to hospitalizations year and children place of residence. Results: In the two periods of the study, the high risk primary cluster was located in the region of Barra do Bugres (relative risk = 8.17, in the first period, and 10.37, in the second). The number of high-risk clusters increased from 8, in the period 2001-2004, to 9, in 2005-2012; while low-risk clusters decreased from 6, in the initial period, to 4, in the latest. The priority geographic areas for attention and intervention for children with asthma are the region around Barra do Bugres, which remained in the two periods with high risk primary clusters and the southwest border of the State that presented increase of the risk. Furthermore, there was an increase of 87% in the number of high risk counties and a reduction of 28% of the counties of protection. Conclusion: In conclusion, the surroundings areas of Barra do Bugres and Porto Estrela and the east and northeast border of the state are priority for health care, once there was an increased risk of hospitalization of children due to asthma.

Temporal evolution of and factors associated with asthma and wheezing in schoolchildren in Brazil / Evolução temporal e fatores associados a asma e sibilância em escolares no Brasil

ABSTRACT Objective: To estimate the evolution of the prevalence of asthma and wheezing among schoolchildren in Brazil from 2012 to 2015, as well as to identify factors associated with both conditions. Methods: This was a cross-sectional study using data from the Brazilian National School-Based Adolescent Health Survey for 2012 and 2015. To characterize the evolution of the prevalence of asthma and wheezing, we used linear regression with weighted-least-squares estimation and presented the annual percent change (APC). Results: During the study period, there was a reduction in the prevalence of wheezing, from 23.2% in 2012 to 22.4% in 2015 (APC, −0.27). The prevalence of asthma increased from 12.4% in 2012 to 16.0% in 2015 (APC, 1.20). The increase in the prevalence of asthma was greatest in the southern region of the country (APC, 2.17). Having any history of smoking and having consumed alcohol in the last 30 days were factors that influenced the prevalence of wheezing and the prevalence of a self-reported diagnosis of asthma during the two years evaluated. Conclusions: There has been an increase in the prevalence of asthma in recent years in Brazil. Our data underscore the importance of improving health strategies and policies aimed at the control of asthma.

RESUMO Objetivo: Estimar a evolução da prevalência de asma e sibilância em escolares brasileiros nos anos de 2012 e 2015, bem como verificar fatores associados a ambas. Métodos: Estudo transversal utilizando dados da Pesquisa Nacional de Saúde do Escolar nos anos de 2012 e 2015. Para verificar a evolução das prevalências de asma e sibilância foi utilizada a regressão linear ponderada pelos quadrados mínimos da variância e apresentada a variação percentual anual (VPA). Resultados: Foi encontrada uma redução da prevalência de sibilância (de 23,2% em 2012 para 22,4% em 2015; VPA: −0,27). A prevalência de asma aumentou de 12,4% em 2012 para 16,0% em 2015 (VPA: 1,20). O maior aumento na prevalência de asma ocorreu na região Sul do país (VPA: 2,17). Ter fumado alguma vez na vida e ter ingerido álcool nos últimos 30 dias foram fatores que influenciaram tanto na prevalência de sibilância quanto na prevalência de diagnóstico referido de asma nos dois anos da pesquisa. Conclusões: Este estudo evidenciou o aumento na prevalência de asma nos últimos anos. Esses dados ressaltam a importância de melhoria das estratégias e políticas de saúde voltadas para o controle da asma.

Self-reported smoking status and urinary cotinine levels in patients with asthma / Tabagismo entre asmáticos: avaliação por autorrelato e dosagem de cotinina urinária

ABSTRACT Objective: To determine the frequency of active smoking among patients with asthma and individuals without asthma by self-report and urinary cotinine measurement. Methods: This was a cross-sectional study conducted in the city of Salvador, Brazil, and involving 1,341 individuals: 498 patients with severe asthma, 417 patients with mild-to-moderate asthma, and 426 individuals without asthma. Smoking status was determined by self-report (with the use of standardized questionnaires) and urinary cotinine measurement. The study variables were compared with the chi-square test and the Kruskal-Wallis test. Results: Of the sample as a whole, 55 (4.1%) reported being current smokers. Of those, 5 had severe asthma, 17 had mild-to-moderate asthma, and 33 had no asthma diagnosis. Of the 55 smokers, 32 (58.2%) were daily smokers and 23 (41.8%) were occasional smokers. Urinary cotinine levels were found to be high in self-reported nonsmokers and former smokers, especially among severe asthma patients, a finding that suggests patient nondisclosure of smoking status. Among smokers, a longer smoking history was found in patients with severe asthma when compared with those with mild-to-moderate asthma. In addition, the proportion of former smokers was higher among patients with severe asthma than among those with mild-to-moderate asthma. Conclusions: Former smoking is associated with severe asthma. Current smoking is observed in patients with severe asthma, and patient nondisclosure of smoking status occurs in some cases. Patients with severe asthma should be thoroughly screened for smoking, and findings should be complemented by objective testing.

RESUMO Objetivo: Descrever a frequência de tabagismo ativo entre pacientes com asma e indivíduos sem asma, usando questionários padronizados e dosagem da cotinina urinária. Métodos: Estudo transversal realizado em Salvador (BA), com 1.341 indivíduos, sendo 498 com asma grave, 417 com asma leve/moderada e 426 sem asma. O tabagismo foi identificado por meio de autorrelato utilizando questionários e por mensuração da cotinina urinária. Para a comparação das variáveis estudadas, utilizaram-se os testes do qui-quadrado e de Kruskal-Wallis. Resultados: Dos 55 participantes (4,1%) que se declararam tabagistas atuais, 5, 17 e 33 eram dos grupos asma grave, asma leve/moderada e sem asma, respectivamente. Desses 55, 32 (58,2%) eram tabagistas diários e 23 (41,8%) eram tabagistas ocasionais. Observaram-se níveis elevados de cotinina urinária entre não fumantes autodeclarados e tabagistas pregressos, especialmente no grupo asma grave, o que sugere omissão do hábito atual de fumar. A carga tabágica entre os fumantes e a proporção de ex-tabagistas foram maiores no grupo asma grave do que no grupo asma leve/moderada. Conclusões: O tabagismo pregresso esteve associado à asma grave. Tabagismo atual também foi observado em alguns pacientes com asma grave e detectou-se omissão em alguns casos. A investigação de tabagismo deve ser meticulosa em pacientes com asma grave e a entrevista desses deve ser complementada por uma avaliação objetiva.

Trend of self-reported asthma prevalence in Brazil from 2003 to 2013 in adults and factors associated with prevalence / Tendência da prevalência de asma autorreferida no Brasil de 2003 a 2013 em adultos e fatores associados à prevalência

ABSTRACT Objectives: To determine the trend of self-reported asthma diagnosed prevalence and to describe the factors associated with asthma in Brazilian adults. Method: Epidemiological cross-sectional study based on databases analysis from three national household surveys: Pesquisa Nacional por Amostra de Domicílios (PNAD) 2003, PNAD 2008 and Pesquisa Nacional de Saúde (PNS) 2013. Participants between 18-45 years old were included. Trend analysis of asthma diagnosed prevalence was conducted using a logistic general linear model. A hierarchical logistic regression model was used to select factors significantly associated with asthma prevalence. Results: Asthma diagnosed prevalence was 3.6% (2003), 3.7% (2008) and 4.5% (2013), showing a statistically significant increased trend. Asthma diagnosed prevalence also increased when analysed by gender (annual change for men: 2.47%, p < 0.003; women: 2.16%, p < 0.001), urban area (annual change for urban: 2.15%, p < 0.001; rural: 2.69%, p = 0.072), healthcare insurance status (annual change without healthcare insurance: 2.18%, p < 0.001; with healthcare insurance: 1.84%, p = 0.014), and geographic regions (annual change North: 4.68%, p < 0.001; Northeast: 4.14%, p < 0.001; and Southeast: 1.84%, p = 0.025). Female gender, obesity, living in urban areas and depression were associated with asthma diagnosed prevalence. Discussion: PNAD and PNS surveys allow for a very large, representative community-based sample of the Brazilian adults to investigate the asthma prevalence. From 2003 to 2013, the prevalence of self-reported physician diagnosis of asthma increased, especially in the North and Northeast regions. Gender, region of residence, household location (urban/rural), obesity, and depression diagnosis seem to play significant roles in the epidemiology of asthma in Brazil.

RESUMO Objetivos: Determinar a tendência da prevalência de diagnóstico de asma autorreferida e descrever os fatores associados à asma em adultos brasileiros. Método: Estudo transversal de análise de dados de três pesquisas domiciliares nacionais: Pesquisa Nacional por Amostra de Domicílios (PNAD) 2003, PNAD 2008 e Pesquisa Nacional de Saúde (PNS) 2013. Participantes entre 18 e 45 anos foram incluídos. A análise de tendência da prevalência do diagnóstico de asma foi realizada utilizando modelo logístico linear. Aplicou-se o modelo de regressão logística hierárquico para selecionar fatores significativamente associados à prevalência de asma. Resultados: A prevalência do diagnóstico de asma foi de 3,6% (2003), 3,7% (2008) e 4,5% (2013), apresentando tendência de elevação significativa. A prevalência do diagnóstico de asma também se elevou quando analisada por sexo (variação anual entre homens: 2,47%, p < 0,003; mulheres: 2,16%, p < 0,001), área urbana (variação anual: 2,15% p < 0,001), plano de saúde (variação anual sem plano: 2,18%, p < 0,001; com plano: 1,84%, p = 0,014) e regiões geográficas (variação anual Norte: 4,68%, p < 0,001; Nordeste 4,14%, p < 0,001; e Sudeste 1,84%, p = 0,025). Sexo feminino, obesidade, viver em áreas urbanas e depressão foram associados positivamente com a prevalência de diagnóstico de asma. Discussão: PNAD e PNS são bases populacionais representativas de adultos brasileiros que possibilitam a investigação da prevalência de asma. De 2003 a 2013, a prevalência de diagnóstico autorreferido de asma aumentou, especialmente nas regiões Norte e Nordeste. Sexo, região geográfica e área de residência (urbana/rural), obesidade e diagnóstico de depressão parecem desempenhar papéis significativos na epidemiologia da asma no Brasil.

Socioeconomic factors and risk for hospitalisation due to asthma in children in the municipalities of Mato Grosso State, Brazil / Fatores socioeconômicos e risco para a hospitalização por asmaem crianças em municípios de Mato Grosso, Brasil

Abstract This ecological study used data accumulated between 2001 and 2012 hospital admissions of children under five years of age with asthma in 141 municipalities in the Mato Grosso. Hospital data were extracted from the SIH/SUS system, and hospitalisation rates were estimated using the Bayesian inference method. SaTScan software was used for the calculation of the relative risk (RR). Differences in socioeconomic characteristics among municipalities with high and low hospitalization rates were evaluated by nonparametric Wilcoxon-Mann-Whitney test. This test indicates that municipalities with better socioeconomic characteristics have lower hospitalization rates. The analysis of the linear models in the two study periods indicated that the decreasing trend in the number of admissions was 3-fold higher in the 2005-2012 period compared with the 2001-2004 period. In addition, a decrease of 76% in the hospitalisation incidence rate was observed during the 12-year study period; this decrease was more evident from 2005 onward. The municipalities identified as having increased risk of hospitalisation of children with asthma were located in areas subjected to intense burning practices and with low municipal development indices.

Resumo Trata-se de um estudo ecológico com dados de hospitalizações de crianças menores de cinco anos de idade com asma, entre 2001 a 2012, nos 141 municípios do estado de Mato Grosso, com o objetivo de analisar a distribuição e o risco de hospitalização por esse problema em crianças no estado de Mato Grosso. Os dados hospitalares foram extraídos do SIH/SUS e as taxas de internação foram estimadas por meio do método de inferência bayesiana. Para realização do cálculo do risco relativo (RR) utilizou-se a técnica de varredura espacial, com o software SatScan. Diferenças de características socioeconômicas entre municípios com altas e com baixas taxas de hospitalização foram avaliadas pelo teste não paramétrico de Wilcoxon-Mann-Whitney. Avaliou-se que municípios com características socioeconômicas melhores têm menores taxas de hospitalização. Além disso, foi verificada uma redução de 76% ao longo de doze anos, mais evidenciada a partir de 2005. Os municípios identificados com maior risco de hospitalização de crianças por asma localizam-se em áreas com intensa atividade de queimadas e baixo índice de desenvolvimento municipal.

Vigilancia epidemiológica para la identificación de casos de infección respiratoria aguda por enterovirus D68 en niños en un hospital de tercer nivel de atención durante 2014-2016 / Surveillance for the identification of cases of acute respiratory infection by enterovirus D68 in children in a tertiary level care hospital during 2014-2016

Resumen Introducción: La reemergencia de las infecciones por Enterovirus D68 (EV-D68) se reportó en los EE.UU. desde agosto-octubre de 2014 (691 casos). En México, un brote se reportó en el Instituto Nacional de Enfermedades Respiratorias (24 casos). Se presentan los resultados de la vigilancia epidemiológica en un hospital pediátrico nacional de tercer nivel para Enterovirus sp. (EV) y otros virus respiratorios. Método: Tras la alerta emitida por la reemergencia del EV-D68 en 2014, la vigilancia epidemiológica -que solo detectaba virus respiratorios mediante PCR en pacientes con enfermedad tipo influenza mediante toma de hisopados nasofaríngeos- se expandió para incluir niños con exacerbación de asma o dificultad respiratoria aguda. Las muestras positivas para EV fueron confirmadas y tipificadas por secuenciación. Posteriormente, se utilizó secuenciación de siguiente generación para obtener el genoma viral completo. Resultados: De 1705 muestras, 13 fueron positivas para EV. Los pacientes con EV presentaron la siguiente comorbilidad: enfermedad pulmonar crónica (7.7%), enfermedad neoplásica (15.4%), asma/rinitis alérgica (23%), neumonías de repetición (23%), y otras (23%). De las 13 muestras positivas para EV, tres resultaron positivas para EV-D68. Dichos casos requirieron ventilación mecánica invasiva, no tuvieron afectación neurológica y sobrevivieron. Conclusiones: La afectación por EV-D68 de la población estudiada fue menor que lo reportado en México durante el mismo periodo. Los casos de infección por EV-D68 presentan diversa comorbilidad, aunque escasas enfermedades pulmonares, lo cual pudiera explicar la baja tasa de ataque. La presencia del sistema de vigilancia epidemiológica establecido y la prevención de infecciones pudieron haber contenido el brote.

Abstract Background: The reemergence of enterovirus D68 (EV-D68) infections in the United States was reported from August-October 2014 (691 cases). In Mexico, an outbreak at the National Institute of Respiratory Diseases was reported (24 cases). The results of epidemiological surveillance of Enterovirus sp. (EV) and other respiratory viruses in a national pediatric tertiary care level hospital are presented. Methods: Following the alert issued by the reemergence of EV-D68 in 2014, epidemiological surveillance -which only detected respiratory viruses by PCR in patients with influenza-like illness using nasopharyngeal swabs- expanded to include children with asthma exacerbation or acute respiratory distress. Positive samples to EV were confirmed and typed by sequencing. Subsequent sequencing was used to obtain the complete viral genome. Results: Of 1705 samples, 13 were positive to EV. Patients with EV presented the following comorbidities: chronic lung disease (7.7%), neoplastic disease (15.4%), allergic asthma/rhinitis (23%), recurrent pneumonia (23%), and other (23%). Of the 13 samples positive for EV, three were positive for EV-D68. These cases required invasive mechanical ventilation, presented no neurological involvement and survived. Conclusions: The impact of the population studied by EV-D68 was lower than that reported in Mexico during the same period. Cases of EV-D68 infection had multiple comorbidities, but few pulmonary comorbidities, which could explain the low attack rate. The epidemiological surveillance and infection prevention system may have contained the outbreak.

Tendência da asma na adolescência no Brasil: resultados da Pesquisa Nacional de Saúde do Escolar (PeNSE) 2012 e 2015 / Asthma trend in adolescence in Brazil: results of the National Adolescent School-based Health Survey (PeNSE 2012-2015)

RESUMO: Objetivo: Comparar a evolução dos indicadores referentes à asma nas edições da Pesquisa Nacional de Saúde do Escolar (PeNSE) 2012 e 2015. Métodos: Estudo transversal em que foram incluídos escolares do nono ano de escolas públicas e privadas das capitais brasileiras. Para saber se o escolar teve chiado no peito nos 12 meses anteriores ao inquérito, foi feita a pergunta: "Nos últimos 12 meses, você teve chiado (ou piado) no peito?" (sim/não). E para saber se teve asma alguma vez na vida foi questionado: "Você teve asma alguma vez na vida?" (sim/não). Resultados: Verificou-se que 23,52% dos estudantes relataram chiado ou piado no peito nos ultimos 12 meses, variando de 16,80% em Salvador (Bahia) a 27,43% em Porto Alegre (Rio Grande do Sul). Ter asma alguma vez na vida foi relatado por 17,92% dos estudantes, variando de 13,98% em Campo Grande (Mato Grosso do Sul) a 30,35% em Porto Alegre (Rio Grande do Sul). Também foi verificada redução da prevalência de chiado (ou piado) no peito nos últimos 12 meses, entre as duas pesquisas (PeNSE 2012 e 2015) em 20 das 27 capitais do Brasil, com destaque para Belo Horizonte, Florianópolis, Cuiabá e Goiânia. Por outro lado, houve aumento da prevalência daqueles que relataram asma alguma vez na vida em 26 das 27 capitais do país. Conclusão: Houve tendência à redução dos sintomas de asma nos últimos 12 meses, enquanto se observa aumento na proporção de adolescentes em que a asma foi referida alguma vez na vida. De certo que o monitoramento da asma ao longo dos anos é imprescindível para gerar conhecimentos e embasar políticas públicas de controle da asma.

ABSTRACT: Objective: To compare the evolution of asthma indicators in the editions of the National School Health Survey (PeNSE 2012 and 2015). Methods: Cross-sectional study including Brazilian 9th grade students from public and private schools. Wheezing was assessed through the question: "In the past 12 months, did you have wheezing (or chirping) chest? (yes/no)", and to assess lifetime presence of asthma, the question was "Have you ever had asthma? (yes/no)". Results: Of the students, 23,52% reported wheezing or chirping chest in the past 12 months, with prevalences ranging from 16,80% (in Salvador, Bahia) to 27,43% (in Porto Alegre, Rio Grande do Sul). Lifetime presence of asthma was reported by 17,92% of the students, ranging from 13,98% (in Campo Grande, Mato Grosso do Sul) to 30,35% (in Porto Alegre, Rio Grande do Sul). There was also a decrease in the prevalence of self-report of wheezing/chirping chest in the last 12 months between the two editions of the survey (2012/2015) in 20 of the 27 Brazilian state capitals, especially in Belo Horizonte, Florianópolis, Cuiabá and Goiânia. However, prevalence of lifetime diagnostic of asthma increased from 2012 to 2015 in 26 of the 27 Brazilian state capitals. Conclusion: There was a decrease in the prevalence of self-report of asthma symptoms and an increase of self-reported lifetime presence of asthma. Certainly, monitoring indicators of asthma prevalence is of high importance for health knowledge and the development of public policies.