Infecciones respiratorias recurrentes en paciente escolar, asociadas a Síndrome de Mounier-Khün: reporte de caso / Recurrent respiratory infections associated with Mounier-Khün Syndrome in a school patient: clinical case report / Infecções respiratórias recorrentes associadas à Síndrome de Mounier-Khün num paciente escolar: relato do caso

El síndrome de Mounier Kühn es una patología infrecuente de la vía aérea, caracterizada por una dilatación anormal de tráquea y bronquios. Se debe sospechar ante la presencia de infecciones broncopulmonares recurrentes e irritación traqueobronquial. El diagnóstico se lleva a cabo a través de la medición del diámetro traqueal en tres segmentos de su anatomía, a través de tomografía torácica. Se presenta el caso de un paciente masculino escolar de 10 años de edad, con antecedentes de infecciones respiratorias recurrentes, hospitalizado por un cuadro neumónico; los hallazgos reportados en la tomografía de tórax corresponden a traqueobroncomegalia además de incremento del diámetro esofágico. El tratamiento de esta entidad es sintomático con medidas de sostén y fisioterapia pulmonar.

Mounier Kühn syndrome is a rare airway pathology characterized by abnormal dilatation of the trachea and bronchi. It should be suspected in the presence of recurrent bronchopulmonary infections and tracheobronchial irritation. The diagnosis is made by measuring the tracheal diameter in three segments of its anatomy, through thoracic tomography. We present the case of a 10 year-old male school boy with a history of recurrent respiratory infections, hospitalized for a pneumonic condition; the findings reported in the thoracic tomography correspond to a tracheobronchomegaly in addition to an increase of the esophageal diameter. The treatment of this entity is symptomatic with supportive measures and pulmonary physical therapy.

A síndrome de Mounier Kühn é uma patologia incomumdas vias aéreas, caracterizada por dilatação anormal da traqueia e brônquios. Devese suspeitar na presença de infecções broncopulmonares recorrentes e irritação traqueobrônquica. O diagnóstico é realizado através da medida do diâmetro traqueal em três segmentos de sua anatomia, através da tomografia de tórax. Apresentamos o caso de um paciente escolar de 10 anos de idade, do sexo masculino, com história de infecções respiratórias de repetição, internado por sintomas pneumônicos; os achados relatados na tomografia de tórax correspondem a uma traqueobroncomegalia, além de aumento do diâmetro esofágico. O tratamento dessa entidade é sintomático com medidas de suporte e fisioterapia pulmonar.

Effect of diurnal temperature range on emergency room visits for acute upper respiratory tract infections

BACKGROUND@#An acute upper respiratory tract infection (URI) is the most common disease worldwide, irrespective of age or sex. This study aimed to evaluate the short-term effect of diurnal temperature range (DTR) on emergency room (ER) visits for URI in Seoul, Korea, between 2009 and 2013.@*METHODS@#Daily ER visits for URI were selected from the National Emergency Department Information System, which is a nationwide daily reporting system for ER visits in Korea. URI cases were defined according to International Classification of Diseases, 10@*RESULTS@#There were 529,527 ER visits for URI during the study period, with a daily mean of 290 visits (range, 74-1942 visits). The mean daily DTR was 8.05 °C (range, 1.1-17.6 °C). The cumulative day (lag 02) effect of DTR above 6.57 °C per 1 °C increment was associated with a 1.42% (95% confidence interval [CI] 0.04-2.82) increase in total URI. Children (≤ 5 years of age) were affected by DTR above 6.57 °C per 1 °C, with 1.45% (95% CI 0.32-2.60) at lag 02, adults (19-64 years) with 2.77% (95% CI 0.39-5.20) at lag 07. When the DTR (lag02) was 6.57 °C to 11.03 °C, the relative risk was significant at 6.01% (95% CI 2.45-9.69) for every 1 °C increase in youth subjects aged for 6 to 18 years.@*CONCLUSIONS@#DTR was associated with a higher risk for ER visits for URI. In addition, the results suggested that the lag effects and relative risks of DTR on URI were quite different according to age.

Contaminación ambiental e infecciones respiratorias en niños / Environmental pollution and respiratory infections in children

La contaminación ambiental afecta a más del 90% de la población mundial, y es considerado un factor de morbi-mortalidad respiratoria desde mediados de 1900. Sin embargo, al día de hoy las políticas públicas no han logrado mejorar en forma sustancial la calidad del aire. Siendo causante de más de 3.7 millones de muertes anuales según datos OMS. Los niños son los principales afectados debido a diferencias anatómicas, fisiológicas y de estilos de vida. Dentro de las complicaciones más frecuentes se encuentran las infecciones respiratorias, pero además puede verse afectado el desarrollo neurológico, patologías oncológicas, enfermedades crónicas (diabetes y asma), alteraciones cardiovasculares, malformaciones congénitas y salud mental entre otros. En el siguiente artículo se revisará la evidencia científica en relación a la contaminación ambiental, como afecta al sistema inmune y el microbioma, generando un aumento en las infecciones respiratorias de los niños.

Environmental pollution affects more than 90% of the world population, and is considered a factor of respiratory morbidity and mortality since the mid-1900s. However, to date public policies have not substantially improved air quality. Being the cause of more than 3.7 million deaths annually according to data from the World Health Organization (WHO), children are more susceptible due to anatomical, physiological and lifestyle differences with adults. Respiratory infections are among the most frequent complications, but neurological development, oncological pathologies, chronic diseases (diabetes and asthma), cardiovascular disorders, congenital malformations and mental health, can be attributed to pollution. The following article will review the scientific evidence of environmental pollution, how it affects the immune system and the microbiome, generating an increase in respiratory infections in children.

Traqueobronquite associada à ventilação mecânica: uma atualização / Ventilator-associated tracheobronchitis: an update

RESUMO As infecções do trato respiratório inferior associadas à ventilação mecânica são uma das complicações mais frequentes em pacientes em ventilação mecânica. Há muitos anos, a traqueobronquite associada à ventilação mecânica tem sido considerada uma doença que não demanda antibioticoterapia. Na última década, diversos estudos demonstraram que a traqueobronquite associada à ventilação mecânica deve ser considerada um processo intermediário que leva à pneumonia associada à ventilação mecânica, uma vez que apesar de ter impacto limitado sobre a mortalidade dos pacientes gravemente enfermos internados nas unidades de terapia intensiva, em contrapartida, demonstra associação significativa com o aumento dos custos hospitalares desses pacientes, assim como do tempo de internação na unidade de terapia intensiva e hospitalar, do uso de antibióticos, e da duração da ventilação mecânica. Embora ainda necessitemos de evidências científicas mais robustas, especialmente no que tange às modalidades terapêuticas, os dados atuais a respeito da traqueobronquite associada à ventilação mecânica salientam que há desfechos suficientemente importantes que exigem vigilância epidemiológica e controle clínico adequados.

ABSTRACT Ventilator-associated lower respiratory tract infection is one of the most frequent complications in mechanically ventilated patients. Ventilator-associated tracheobronchitis has been considered a disease that does not warrant antibiotic treatment by the medical community for many years. In the last decade, several studies have shown that tracheobronchitis could be considered an intermediate process that leads to ventilator-associated pneumonia. Furthermore, ventilator-associated tracheobronchitis has a limited impact on overall mortality but shows a significant association with increased patient costs, length of stay, antibiotic use, and duration of mechanical ventilation. Although we still need clear evidence, especially concerning treatment modalities, the present study on ventilator-associated tracheobronchitis highlights that there are important impacts of including this condition in clinical management and epidemiological and infection surveillance.

Infecciones respiratorias agudas bajas graves en niños menores de 6 meses hospitalizados: análisis de factores de riesgo de gravedad / Low acute breathing respiratory infections in children under 6 months hospitalized: analysis of risk factors of gravity / Baixas infecções respiratórias agudas em crianças menor de 6 meses hospitalizadas: análise de fatores de risco de gravidade

Objetivos: Describir características clínicas y socio ambientales de niños < de 6 meses hospitalizados por infección respiratoria aguda baja (IRAB) y factores de riesgo de gravedad. Metodología: Estudio observacional, transversal, caso-control entre 1/5/14 - 5/8/14. Casos (IRAB grave): necesidad de oxígeno de alto flujo y/o soporte ventilatorio. Controles (IRAB no grave): hospitalizados en cuidados moderados. Se revisaron historias clínicas y entrevistaron a padres. Se excluyeron niños con infección respiratoria intrahospitalaria y comorbilidades. Variables: edad, sexo, puntuación de TAL, educación materna, hacinamiento, tabaquismo, prematurez, número de consultas previas al ingreso, demora en la consulta, diagnóstico etiológico al ingreso. Procesamiento datos: software SPSS. Resultados: 396 niños, 167 casos, 229 controles. Mediana edad (días) casos: 77, controles: 76. Explorando modelos de regresión logística binaria para explicar la presencia de IRAB grave resultaron predictores estadísticamente significativos: número de consultas previas (p=0.035) y diagnóstico etiológico al ingreso (p=0.003).El modelo no fue satisfactorio, solo logró explicar 4,6% de la variabilidad total. Conclusiones: Futuros estudios, con muestras más representativas, son necesarios para profundizar en el conocimiento de los factores predictores de gravedad.

Objectives: Describe clinical characteristics and environmental partner of children under 6 months hospitalized for low acute respiratory infection (ALRI) and explore predictors of severity. Methodology: Observational, transversal, case-control study between 1/5/14 - 5/8/14. Cases (severe ALRI): Need for high flow oxygen and/or ventilator support. Controls (Alri not severe): hospitalized in moderate care. Clinical histories were reviewed and the parents were interviewed. Children with intrahospital respiratory infection and comorbidity were excluded. Variables: Age, sex, TAL score, maternal education, overcrowding, smoking, prematurity, number of pre-admission consultations, delay in consultation, etiologic diagnosis of income. Data processing: SPSS software. Results: 396 Children, 167 cases, 229 controls. Middle age (days) cases: 77, controls: 76. Exploring binary Logistic regression models to explain the presence of severe ALRI were statistically significant predictors: number of previous consultations (P= 0.035), etiologic diagnosis of admission (P= 0.003). The model was not satisfactory because it only managed to explain 4.6% of the total variability. Conclusions: Exploring different statistical models did not find a satisfactory, the total variability explained by the model is very low. It is emphasized that the model did not enter environmental factors considered "a priori" relevant (habit of smoking, overcrowding) nor the rest of the variables studied: schooling and maternal age, nutritional status to income, prematurity and factors behavioral as the delay in the consultation. Diagnosis of admission and number of pre-admission consultations were significant. Future studies, with more representative samples, are necessary to deepen the knowledge of the predictive factors of gravity.

Objetivos: Descrever características clínicas e parceiro ambiental das crianças < de 6 meses hospitalizados para baixa infecção respiratória aguda (IRAB) e para explorar os preditores de severidade. Metodologia: observação, transversal, estudo de caso-controle entre 1/5/14 - 5/8/14. Casos (IRAB severo): necessidade para oxigênio do fluxo elevado e/ou sustentação do ventilador. Controlos (IRAB não severos): hospitalizado em cuidados moderados. Histórias clínicas foram revistas e pais foram entrevistados. Foram excluídas as crianças com infecção respiratória intrahospital e comorbidade. Variáveis: idade, sexo, TAL pontuação, educação materna, superlotação, tabagismo, prematuridade, número de consultas prévias à admissão, atraso na consulta, diagnóstico etiológico de renda. Processamento de dados: software SPSS. Resultados: 396 crianças, 167 casos, 229 controles. Idade média (dias) casos: 77; controles: 76. Explorar modelos binários de regressão logística para explicar a presença de IRAB graves foram preditores estatisticamente significativos: número de consultas prévias (p= 0.035) diagnóstico etiológico de admissão (p= 0.003). Modelo não foi satisfatório porque só conseguiu explicar 4,6% da variabilidade total. Conclusões: explorar diferentes modelos estatísticos não encontrou um satisfatório, a variabilidade total explicada pelo modelo é muito baixa. O modelo não introduziu factores ambientais considerados "a priori" relevantes (hábito de fumar, superlotação) nem o resto das variáveis estudadas: escolaridade e idade materna, estado nutricional para rendimentos, prematuridade e factores comportamental como o atraso na consulta. Diagnóstico de admissão e número de consultas prévias à admissão foram significativos. Estudos futuros, com amostras mais representativas, são necessários para aprofundar o conhecimento dos fatores preditivos da gravidade.

Infección respiratoria por adenovirus en pediatría: de ayer a hoy / Adenovirus pediatric respiratory infection: past and present

Acute respiratory infections represent a world pediatric health burden. RSV, influenza and adenoviruses are among the most frequent causative agents. Adenoviruses usually produce upper respiratory infections, but they can be responsible for acute lower respiratory infection in children with severe clinical outcome. It is necessary a special clinical and epidemiological organization to avoid nosocomial adenovirus local outbreaks. Rapid diagnose, done by immunofluorescence assay and PCR, individual case isolation and supportive therapy are necessary for an appropriate management. The increasing immune compromised population represents a challenge for the adenovirus diagnosis with quantitative PCR and for nosocomial infection control and potential antiviral treatment.

Las infecciones respiratorias agudas son un problema prioritario mundial de morbimortalidad infantil y son causadas predominantemente por virus, entre los que destacan el virus respiratorio sincicial (VRS), virus influenza (FLU) y adenovirus (ADV). Los ADV normalmente causan infecciones respiratorias altas, pero pueden provocar infecciones bajas muy graves, que dejan secuelas y tienen alta letalidad. Requieren un manejo clínico y epidemiológico especial para evitar los graves brotes nosocomiales observados en Latinoamérica. Esto incluye un diagnóstico rápido hecho con técnicas de inmunodiagnóstico y reacción en cadena polimerasa (PCR), aislamiento individual del paciente y terapia de soporte. En pacientes inmunocomprometidos, la infección por ADV representa un gran desafío para el diagnóstico, con uso de PCR cuantitativo (qPCR) y eventual tratamiento antiviral. El objetivo de esta revisión es el de actualizar las propiedades, patogenia, epidemiología y diagnóstico del ADV, con énfasis en los cuadros respiratorios de mayor morbimortalidad que se producen en algunos niños.

Brazilian consensus on non-cystic fibrosis bronchiectasis / Consenso brasileiro sobre bronquiectasias não fibrocísticas

ABSTRACT Bronchiectasis is a condition that has been increasingly diagnosed by chest HRCT. In the literature, bronchiectasis is divided into bronchiectasis secondary to cystic fibrosis and bronchiectasis not associated with cystic fibrosis, which is termed non-cystic fibrosis bronchiectasis. Many causes can lead to the development of bronchiectasis, and patients usually have chronic airway symptoms, recurrent infections, and CT abnormalities consistent with the condition. The first international guideline on the diagnosis and treatment of non-cystic fibrosis bronchiectasis was published in 2010. In Brazil, this is the first review document aimed at systematizing the knowledge that has been accumulated on the subject to date. Because there is insufficient evidence on which to base recommendations for various treatment topics, here the decision was made to prepare an expert consensus document. The Brazilian Thoracic Association Committee on Respiratory Infections summoned 10 pulmonologists with expertise in bronchiectasis in Brazil to conduct a critical assessment of the available scientific evidence and international guidelines, as well as to identify aspects that are relevant to the understanding of the heterogeneity of bronchiectasis and to its diagnostic and therapeutic management. Five broad topics were established (pathophysiology, diagnosis, monitoring of stable patients, treatment of stable patients, and management of exacerbations). After this subdivision, the topics were distributed among the authors, who conducted a nonsystematic review of the literature, giving priority to major publications in the specific areas, including original articles, review articles, and systematic reviews. The authors reviewed and commented on all topics, producing a single final document that was approved by consensus.

RESUMO Bronquiectasias têm se mostrado uma condição cada vez mais diagnosticada com a utilização da TCAR de tórax. Na literatura, a terminologia utilizada separa as bronquiectasias entre secundárias à fibrose cística e aquelas não associadas à fibrose cística, denominadas bronquiectasias não fibrocísticas neste documento. Muitas causas podem levar ao desenvolvimento de bronquiectasias, e o paciente geralmente tem sintomas crônicos de vias aéreas, infecções recorrentes e alterações tomográficas compatíveis com a condição. Em 2010, foi publicada a primeira diretriz internacional sobre diagnóstico e tratamento das bronquiectasias não fibrocísticas. No Brasil, este é o primeiro documento de revisão com o objetivo de sistematizar o conhecimento acumulado sobre o assunto até o momento. Como para vários tópicos do tratamento não há evidências suficientes para recomendações, optou-se aqui pela construção de um documento de consenso entre especialistas. A Comissão de Infecções Respiratórias da Sociedade Brasileira de Pneumologia e Tisiologia reuniu 10 pneumologistas com expertise em bronquiectasias no Brasil para avaliar criticamente as evidências científicas e diretrizes internacionais, assim como identificar aspectos relevantes à compreensão da heterogeneidade da doença bronquiectásica e a seu manejo diagnóstico e terapêutico. Foram determinados cinco grandes tópicos (fisiopatologia; diagnóstico; monitorização do paciente estável; tratamento do paciente estável; e manejo das exacerbações). Após essa subdivisão, os tópicos foram distribuídos entre os autores, que realizaram uma revisão não sistemática da literatura, priorizando as principais publicações nas áreas específicas, incluindo artigos originais e de revisão, assim como revisões sistemáticas. Os autores revisaram e opinaram sobre todos os tópicos, formando um documento único final que foi aprovado por todos.

Epidemiología de las infecciones respiratorias por Pseudomonas aeruginosa en pacientes pediátricos: Hospital Universitario Dr. Luis Gómez López / Epidemiology of respiratory infections by Pseudomonas aeruginosa in pediatric patients: Hospital Universitario Dr. Luis Gómez López

Se realizó una investigación de tipo descriptiva retrospectiva con el objetivo de determinar la epidemiología de la infección por Pseudomonas aeruginosa en pacientes pediátricos que asistieron a la Unidad Funcional de Fibrosis Quística y al Servicio de Pediatría del Hospital Universitario Dr. Luis Gómez López en Barquisimeto durante el período 2010-2015. Ochenta y tres registros de historias clínicas de los pacientes cumplieron con los criterios de inclusión y exclusión. Durante los años 2010 y 2011, la mayor parte de los pacientes se ubicaron en el grupo etario de 12 a 17 años. A partir del año 2014 predominaron los menores de 5 años. El sexo masculino fue predominante entre 2010 y 2011; contrariamente para el 2012 fue el femenino. El mayor porcentaje de pacientes atendidos procedían del estado Lara. El cultivo de muestra del esputo fue el examen más utilizado para diagnosticar infección por P. aeruginosa. Desde 2010 a 2012, el 100% de los pacientes fueron hospitalizados. El objetivo de este estudio fue obtener datos sobre la infección por P. aeruginosa en pacientes pediátricos lo cual permitirá diseñar planes de tratamiento dirigidos al paciente como medida para mejorar la calidad de vida y longevidad de los mismos(AU)

A retrospective descriptive study was performed in order to search for epidemiological data of respiratory infections by Pseudomonas aeruginosa in pediatric patients that were attended at the Unidad Funcional of Fibrosis Quística and Pediatric Service of Hospital Dr. Luis Gómez López in Barquisimeto, Lara state during the 2010-2015 period. Eighty-three medical chart records of patients met the inclusion and exclusion criteria. The majority of patients attended during 2010-2011 were between 12 and 17 years old; after 2014, most patients were under 5 years. Male sex was predominant in 2010 and 2011; in the year 2012, female patients were predominant. The highest percentage of patients came from Lara state. Sputum sample culture was the most used test to diagnose Pseudomonas infection in patients in the first four years of life. From 2010 to 2012, 100% of the patients were hospitalized. The goal of this study was to provide epidemiological data of respiratory infections by Pseudomonas aeruginosa in pediatric patients in order to design treatment strategies to improve the quality of life and longevity of these patients(AU)

Infecciones respiratorias agudas bajas en niños menores de 2 años: hospitalizaciones durante el invierno del año 2014 / Low acute respiratory infections in children under 2 years: 2014 winter hospitalizations / Infecções agudas das vias respiratórias inferiores em crianças menores de 2 anos: hospitalizações em 2014

Durante el invierno las infecciones respiratorias agudas bajas (IRAB) determinan un incremento en la demanda asistencial, afectando sobre todo a los niños más pequeños. El objetivo de la investigación fue describir las características clínicas, modalidades de tratamiento y evolución de los menores de 2 años hospitalizados en el Hospital Pediátrico-Centro Hospitalario Pereira Rossell por IRAB de etiología viral durante el invierno de 2014. Se realizó un estudio descriptivo, retrospectivo, describiendo las características de los menores de 2 años hospitalizados del 9/6 al 21/9/2014 por IRAB de probable etiología viral. Se describieron las características epidemiológicas y clínicas, el tratamiento realizado y la evolución de los pacientes. En el período evaluado egresaron 742 niños (34% de los egresos de la institución). Tenían una mediana de edad de 4 meses; 18% presentaba al menos un factor de riesgo de IRAB grave. Se identificó al virus respiratorio sincicial en 59,6%. La estadía hospitalaria tuvo una mediana de 4 días. En las salas de cuidados moderados se aplicó ventilación no invasiva a 46 niños, y oxigenación de alto flujo a 129 niños, logrando una mejoría clínica en el 87,0% y el 87,6% respectivamente. Ingresaron a unidades de cuidados intensivos 217 niños, 54% requirió asistencia ventilatoria mecánica. Dos pacientes fallecieron. En el período evaluado los niños pequeños con IRAB representaron una importante proporción de los egresos, con importante carga asistencial. La mayoría eran niños sin factores de riesgo. La aplicación de las técnicas de tratamiento en cuidados moderados fue efectiva, permitiendo disminuir la demanda de camas de cuidados intensivos.

During the winter, low acute respiratory infections (LARI) determine an increase in care demand, especially affecting younger children. The objective of the research was to describe the clinical characteristics, treatment modalities and evolution of children under 2 years of age hospitalized at the Hospital Pediátrico-Centro Hospitalario Pereira Rossell for viral etiology LARI during the 2014 winter. A descriptive, retrospective study was conducted, describing the characteristics of children under 2 years hospitalized between 9/6 and 9/21/2014 for LARI of probable viral etiology. The following features were described: epidemiological and clinical characteristics, treatment performed and patient's evolution. During the period evaluated, 742 children were discharged (34% of the institution's admissions). They had a median age of 4 months; 18% had at least one risk factor for severe LARI. Respiratory syncytial virus was identified in 59.6%. The hospital stay had a median of 4 days. In moderate care rooms noninvasive ventilation was applied to 46 children, and high flow oxygenation to 129 children, achieving clinical improvement in 87.0% and 87.6%, respectively. Two hundred and seventeen children were admitted 54% required mechanical ventilation. Two patients died. In the evaluated period small children with LARI represented a significant proportion of the discharges, with an important burden of care. The majority were children without risk factors. The application of treatment techniques in moderate care was effective, allowed a decrease in the demand for intensive care beds.

Durante o inverno, as infecções respiratórias agudas baixas (IRAB) determinam o aumento da demanda de cuidados, afetando especialmente as crianças menores. O objetivo da pesquisa foi descrever as características clínicas, as modalidades de tratamento e a evolução de crianças menores de dois anos hospitalizados no Hospital Pediátrico-Centro Hospitalario Pereira Rossell devido a IRAB de etiologia viral, durante o inverno de 2014. Foi realizado um estudo descritivo e retrospectivo, descrevendo as características das crianças menores de 2 anos hospitalizadas entre 9/6 e 21/9/2014 devido a IRAB de provável etiologia viral. Descreveram-se: características epidemiológicas e clínicas, tratamento realizado e evolução dos pacientes. Durante o período avaliado, 742 crianças foram hospitalizadas (34% dos ingressos da instituição). Tinham uma idade média de 4 meses; 18% tinham pelo menos um fator de risco para IRAB severa. O vírus sincicial respiratório foi identificado em 59,6%. A estadia hospitalaria teve uma mediana de 4 dias. Em salas de cuidados moderados, a ventilação não invasiva foi aplicada a 46 crianças e a oxigenação de alto fluxo a 129 crianças, atingindo melhora clínica em 87,0% e 87,6%, respectivamente. Foram internadas em unidades de terapia intensiva 217 crianças, 54% necessitaram de ventilação mecânica. Dois pacientes faleceram. No período avaliado, as crianças pequenas com IRAB representaram uma proporção significativa das despesas, com um carga importante de atendimento. A maioria carecia de fatores de risco. A aplicação de técnicas de tratamento em cuidados moderados foi eficaz, permitindo uma diminuição da demanda por leitos de terapia intensiva.

Ventilación no invasiva y oxigenoterapia de alto flujo en niños en salas de cuidados moderados. Experiencia en la Unidad de Cuidados Respiratorios Especiales Agudos del Hospital Pediátrico del CHPR durante 2013-2016 / Non-invasive ventilation and high-flow oxygen therapy in children in moderate care rooms. Experience at the Special Respiratory Acute Care at the CHPR from 2013 to 2016 / Ventilação não invasiva e oxigenoterapia de alto fluxo em crianças em consultórios de atenção de nível moderado. Experiência na Unidade de Cuidados Respiratórios Especiais Agudos do Hospital Pediátrico do CHPR durante 2013-2016

Resumen: Introducción: las infecciones respiratorias agudas bajas (IRAB) constituyen un importante problema de salud en invierno. El centro de referencia nacional en Uruguay ofrece a niños con IRAB ventilación no invasiva (VNI) y cánula nasal de alto flujo (CNAF) en cuidados moderados. Objetivo: describir las características clínicas, tratamiento y evolución de los niños asistidos en la Unidad de Cuidados Respiratorios Especiales Agudos (CREA) del Hospital Pediátrico de referencia nacional. Material y método: estudio retrospectivo, descriptivo. Se incluyeron todos los niños hospitalizados por IRAB asistidos en CREA que recibieron VNI y/o CNAF entre 1/1/13 y 31/12/16. Se revisaron historias clínicas. Variables: características clínicas, tratamientos, complicaciones, evolución y destino. Resultados: se asistieron 650 niños (348 con CNAF; 302 con VNI); sexo masculino 63% (407). Bronquiolitis 63% (406), se detectó virus respiratorio sincicial (VRS) en 60% (388). Media de edad en niños que recibieron CNAF 11 meses (9 días-108 meses); promedio duración de la técnica: 3 días. Requirieron ingreso a unidades de cuidados intensivos (UCI): 12% (43); asistencia ventilatoria mecánica (AVM): 6% (22). Media de edad en niños que recibieron VNI :12 meses (1-132 meses); media de duración de la técnica: 3 días. Requirieron ingreso a UCI 16% (49); AVM: 9,6% (29). No se registraron fallecimientos ni complicaciones graves. Conclusiones: el 85% de los niños completó su tratamiento en la Unidad CREA. El porcentaje de niños que requirió AVM fue bajo. La implementación de estas técnicas en cuidados moderados redujo la necesidad de ingreso a UCI y probablemente la necesidad de AVM.

Summary: Introduction: acute lower respiratory tract infections (LRTI) are a major health problem in winter. The National Reference Center in Uruguay offers children with LRTI, non-invasive ventilation (NIV) and high-flow nasal cannula (CNAF) in moderate care. Objective: to describe the clinical characteristics, treatment and evolution of the children assisted in Special Respiratory Care Acute (CREA unit), in a national pediatric reference hospital. Patients and methods: retrospective, descriptive study. All children hospitalized for LRTI assisted in CREA who received NIV and / or CNAF between 1/1/13 and 12/31/16 were included in the study. Clinical records were reviewed. Variables: clinical characteristics, treatment, complications, evolution and destination. Results: a total of 650 children were assisted (348 with CNAF, 302 with NIV); male sex 63% (407). Bronchiolitis 63% (406), Respiratory Syncytial Virus (RSV) was detected in 60% (388). Mean age in children receiving CNAF was 11 months (9 days - 108 months); mean duration of technique was 3 days. Required admission to intensive care unit (ICU): 12% (43); invasive ventilation (IV) 6% (22). Mean age in children receiving NIV 12 months (1-132 months); mean duration of technique 3 days. Required admission to the ICU 49 (16%); IV 29 (9.6%). There were no deaths or serious complications. Conclusions: 85% of this group of children completed their treatment in the CREA unit. The percentage of children who required IV was low. The implementation of these techniques in moderate care reduced the need to enter an ICU and the need for IV.

Resumo: Introdução: as infecções respiratórias agudas baixas (IRAB) são um importante problema de saúde no inverno. O centro de referência nacional no Uruguai oferece ventilação não invasiva (NIV) e cânula nasal de alto fluxo (CNAF) em cuidados moderados às crianças com IRAB. Objetivo: descrever as características clínicas, tratamento e evolução das crianças atendidas na Unidade Especial de Tratamento Respiratório Agudo (CREA) do Hospital de Referência Nacional de Pediatria. Pacientes e métodos: estudo retrospectivo, descritivo. No estudo foram incluídas todas as crianças hospitalizadas por causa da IRAB atendidas no CREA que receberam VNI e / ou CNAF entre 1/1/13 e 31/12/16. Foram revisadas as histórias clínicas. Variáveis: características clínicas, tratamentos, complicações, evolução e destino. Resultados: 650 crianças foram atendidas (348 com CNAF, 302 com NIV); sexo masculino 63% (407). Bronquiolite 63% (406), o Vírus Respiratório Sincicial (VRS) foi detectado em 60% (388). Idade média em crianças que receberam CNAF: 11 meses (9 dias-108 meses); Duração média da técnica: 3 dias. Necessidade para admissão nas unidades de terapia intensiva (UTI): 12% (43); assistência ventilatória mecânica (MAV) 6% (22). Idade média em crianças que receberam VNI: 12 meses (1-132 meses); duração média da técnica: 3 dias. Deveram ser admitidos na UTI: 16% (49); AVM 9,6% (29). Nenhuma morte ou complicações sérias foram registradas. Conclusões: 85% das crianças completaram o tratamento na unidade CREA. A porcentagem de crianças que necessitaram de AVM foi baixa. A implementação dessas técnicas em cuidados moderados reduziu a necessidade de internação na UTI e, provavelmente, a necessidade de MAV.

Efecto de la lactancia en las infecciones pediátricas frecuentes: estudio de cohorte prospectivo de cinco años / Effect of breastfeeding on common pediatric infections: a 5-year prospective cohort study

Introducción. En los estudios realizados se encontró que la duración de la lactancia tiene un efecto reductor sobre las infecciones frecuentes en los niños durante el período de lactancia. Objetivo. El objetivo de este estudio fue abordar la asociación entre la duración de la lactancia y las enfermedades infecciosas frecuentes en los niños hasta los 5 años de edad para demostrar los efectos protectores de la leche materna. Población y métodos. Se incluyeron 411 lactantes nacidos en Rize, Turquía, entre enero de 2011 y diciembre de 2011. Este estudio de cohorte, prospectivo duró cinco años; en este período, se realizaron 11 entrevistas con cada madre de los lactantes. Se dividió a los lactantes en dos grupos: amamantados durante más y menos de 12 meses, y se estudió la asociación entre la lactancia y las infecciones, como otitis media aguda, gastroenteritis aguda, infección respiratoria aguda e infección urinaria. Resultados. De los 411 nacimientos, se incluyeron 270 lactantes, 193 (71,5%) recibieron lactancia durante más de 12 meses y 77 (28,5%), durante menos de 12 meses. Los lactantes del primer grupo tuvieron menos casos de otitis media aguda y gastroenteritis aguda (n = 77; 28,52%) en comparación con los lactantes amamantados durante menos de 12 meses en el período de cinco años (p < 0,05). Conclusiones. Con este estudio se detectó que la lactancia durante más de 12 meses reduce significativamente las infecciones frecuentes durante la niñez, como la otitis media y la gastroenteritis durante los primeros cinco años de vida.

Introduction.The studies conducted revealed that breastfeeding duration has a reducing effect on common infectious diseases in the children during breastfeeding period. Objective. The aim of the present study was to address the association between breastfeeding duration and common infectious diseases in the children until 5 years of age to show long-term protective effects of the breast milk. Material and methods. The study included 411 infants who were born in Rize (Turkey) between January 2011 and December 2011. The present prospective-cohort study lasted for 5 years and 11 interviews were conducted with each mother of the infants during this period. The infants were divided into two groups as those who were breastfed more and less than 12 months and the association between breastfeeding and infections such as acute otitis media, acute gastroenteritis, acute respiratory tract infections and acute urinary system infections was investigated. Results. Of 270 infants 193 (71.5%) were breastfed longer than 12 months and 77 (28.5%) were breastfed less than 12 months. Infants in the first group had less acute otitis media and acute gastroenteritis (n= 77, 28.52%) when compared with the infants breastfed less than 12 months during 5-year period (p <0.05). Conclusion. The present study detected that breastfeeding duration longer than 12 months significantly reduces the common childhood infections such as otitis media and gastroenteritis during the first 5 years of life.

Serum 25-hydroxyvitamin D levels in patients with Granulomatosis with Polyangiitis: association with respiratory infection

OBJECTIVES: To determine the possible association of serum 25-hydroxyvitamin D (25OHD) levels with disease activity and respiratory infection in granulomatosis with polyangiitis patients during two different periods: winter/spring and summer/autumn. METHODS: Thirty-two granulomatosis with polyangiitis patients were evaluated in the winter/spring, and the same patients (except 5) were evaluated in summer/autumn (n=27). The 25OHD levels were measured by radioimmunoassay. Disease activity was assessed by the Birmingham Vasculitis Activity Score Modified for Wegener's Granulomatosis (BVAS/WG) and antineutrophil cytoplasmic antibody (ANCA) positivity. Respiratory infection was defined according the Centers for Disease Control and Prevention criteria. RESULTS: 25OHD levels were lower among patients in winter/spring than in summer/autumn (32.31±13.10 vs. 38.98±10.97 ng/mL, p=0.04). Seven patients met the criteria for respiratory infection: 5 in winter/spring and 2 in summer/autumn. Patients with respiratory infection presented lower 25OHD levels than those without infection (25.15±11.70 vs. 36.73±12.08 ng/mL, p=0.02). A higher frequency of low vitamin D levels (25OHD<20 ng/mL) was observed in patients with respiratory infection (37.5% vs. 7.8, p=0.04). Serum 25OHD levels were comparable between patients with (BVAS/WG≥1 plus positive ANCA) and without disease activity (BVAS/WG=0 plus negative ANCA) (35.40±11.48 vs. 35.34±13.13 ng/mL, p=0.98). CONCLUSIONS: Lower 25OHD levels were associated with respiratory infection but not disease activity in granulomatosis with polyangiitis patients. Our data suggest that hypovitaminosis D could be an important risk factor for respiratory infection in granulomatosis with polyangiitis patients.

Agammaglobulinemia ligada al cromosoma X en adultos: Evolucion clínica / X-linked agammaglobulinemia in adults. Clinical evolution

La agammaglobulinemia ligada al cromosoma X (XLA) se caracteriza por la ausencia o reducción significativa de linfocitos B, niveles bajos o indetectables de inmunoglobulinas y, clínicamente, por infecciones principalmente respiratorias por bacterias capsuladas extracelulares y diarrea recurrente. El tratamiento de reemplazo con gammaglobulina ha permitido a la mayor parte de los enfermos llegar a adultos con una buena calidad de vida. Analizamos las características clínicas de 14 pacientes mayores de 18 años con diagnóstico de XLA asistidos en nuestra Unidad desde 2003, fecha en que fue derivado el primer paciente, hasta 2015. La edad promedio en el momento de la derivación fue de 20.4 años, en el momento de la última consulta de 25.5. El tiempo promedio de seguimiento fue de 59.8 meses. Previo al diagnóstico todos habían presentado infecciones, las más frecuentes fueron las respiratorias. Posteriormente al diagnóstico todos iniciaron tratamiento de reemplazo con gammaglobulina endovenosa, y a pesar de que las infecciones disminuyeron en frecuencia y gravedad, en este período se presentaron enfermedades con secuelas graves. Al comenzar el seguimiento en nuestra Unidad, 35.7% presentaban deterioro de la función respiratoria, solo grave en un paciente. Durante el seguimiento ninguno presentó deterioro de la función respiratoria ni complicaciones clínicas importantes. Tres pasaron a gammaglobulina subcutánea con buena tolerancia. El número de adultos con XLA es cada vez mayor, la mayoría llegan a la segunda década de la vida sin complicaciones graves y bajo tratamiento se mantienen libres de enfermedades infecciosas graves y de progresión de sus secuelas pulmonares.

X-linked agammaglobulinemia (XLA) is characterized by absent or severely reduced B cells, low or undetectable immunoglobulin levels and clinically by extracellular bacterial infections which mainly compromise the respiratory tract as well as recurrent diarrheas. The mainstay of treatment is gammaglobulin replacement therapy, which allows most patients to reach adulthood with high quality of life. We analyzed the clinical features of 14 patients over 18 years of age with XLA diagnosis that received treatment in our unit from the year 2003, the date the first patient was derived, until 2015. The average age at which patients were referred was 20.4 years old; age at the last consult was 25.5. The average follow-up time was 59.8 months. Previously to being diagnosed all patients had suffered infections, most frequently respiratory. After diagnosis all were started on intravenous gammaglobulin replacement treatment and in spite of infections being reduced in severity and frequency, there were cases of severe disease with long term sequelae. At the beginning of our follow-up 35.7% presented impaired respiratory function with only one case being severe. In no cases during this period did the respiratory function worsen, nor were there severe clinical complications. Three patients were switched to subcutaneous immunoglobulin treatment with good tolerance. The number of XLA cases is increasing, as most reach the second decade of life without serious complications and remain free of severe infectious disease and further impairment of their respiratory functions with the treatment.

Hospitalizaciones por IRAB de probable etiología viral en niños durante el año 2012: estrategia asistencial / Child hospitalizations for acute lower respiratory infections probably caused by virus in 2012: a healthcare strategy

Introducción: en el Hospital Pediátrico del Centro Hospitalario Pereira Rossell (HP-CHPR) durante los meses fríos, las infecciones respiratorias agudas bajas (IRAB) determinan gran demanda asistencial. Para afrontarlas se pone en práctica una estrategia de diagnóstico y tratamiento denominada Plan de Invierno (PI), que se planifica anualmente, en función de las características de los pacientes tratados en años anteriores. Objetivos: describir las características epidemiológicas, clínicas y evolutivas de los niños que requirieron admisión por IRAB en el HP-CHPR durante los meses fríos del 2012 y describir las principales acciones de la estrategia Plan Invierno del año 2012 (PI-2012). Metodología: se describieron las características epidemiológicas, clínicas y evolutivas de los menores de 24 meses que egresaron del HP-CHPR, en el marco de la estrategia PI-2012, por IRAB de probable etiología viral. Se describió las principales acciones de la estrategia de diagnóstico y tratamiento realizada. Resultados: durante el PI-2012 egresaron 887 niños (25,5% de los egresos hospitalarios). La mediana de edad fue 4 meses. Menos de 10% tenía factores de riesgo para enfermedad grave. El virus respiratorio sincitial (VRS) fue el más frecuentemente identificado. Se aplicó un protocolo de diagnóstico y tratamiento. Se pusieron en práctica técnicas especiales de tratamiento en salas de cuidados moderados. Se aplicó ventilación no invasiva (VNI) en 87 niños, con éxito en 80% de los casos. Se realizó oxigenación de alto flujo (OAF) a 22 niños, con éxito en 100%. Requirieron ingreso a terapia intensiva (CTI) 149 niños, 55,7% requirió asistencia ventilatoria mecánica (AVM). Dos pacientes fallecieron en salas de cuidados moderados, cuatro en CTI. Conclusiones: las IRAB representaron una causa muy importante de morbimortalidad durante el período descripto. Los niños que requirieron ingreso hospitalario eran en su mayoría pequeños. Un porcentaje importante cursó una enfermedad grave, requiriendo modalidades especiales de tratamiento. Es importante continuar en la búsqueda de la mejor estrategia terapéutica para estos niños.

Introduction: during the colder months, acute lower respiratory infections (ALRI) determine a considerable increase in the demand for care at the Pereira Rossell Pediatric Hospital (HP-CHPR). In order to respond to such demand the hospital implements a diagnosis and treatment strategy called Winter Plan (WP), which is planned annually based on the characteristics of patients treated in previous years. Objectives: to describe the epidemiological and clinical characteristics and evolution of children with ALRI who required hospitalization in the HP-CHPR during the cold months of 2012, and to describe the main actions of the 2012 Winter Plan strategy (2012 WP). Methodology: epidemiological, clinical and evolution characteristics of children under 24 months discharged from HP-CHPR within the 2012WP strategy were described. The strategy’s main action for diagnosis and treatment were described. Results: 887 children were discharged during the 2012 WP strategy, representing 25.5% of hospital discharges. Median age was 4 months. Less than 10% presented risk factors for severe disease. Respiratory syncytial virus (RSV) was the most frequently identified virus. A protocol for diagnosis and treatment was applied. Special techniques for treatment were implemented in transitional care rooms. 87 children were administered non-invasive ventilation, which was successful in 80% of cases. High-flow oxygen was used in 22 children, being this successful in all patients. 149 children required admission to intensive care unit (ICU) , 55.7% needed mechanical ventilation assistance. Two patients died in the medium unit and four in the ICU. Conclusions: ALRI represent a major cause of morbidity and mortality during the period described . Most children who required hospitalization were young. A significant percentage presented a severe disease, requiring special treatment modalities. It is important to continue searching for the best therapeutic strategy for these children.

Infections and systemic lupus erythematosus / Infecções e lúpus eritematoso sistêmico

ABSTRACT Objective To determine the incidence of infections in a population of systemic lupus erythematosus individuals and the characteristics of infections regarding original site, as well as to study the possible associations between infections and treatment. Methods An analytical retrospective study using data from medical charts of systemic lupus erythematosus patients from a single university hospital. A total of 144 patients followed up for five years were included. Data collected comprised age of patients and age at onset of lupus, sex and ethnicity, disease duration before the study period, medications, cumulative dose of prednisone, occurrence of infections and their original site. Results The most frequent infections were urinary tract infections (correlated to use of prednisone − p<0.0001 and cyclophosphamide − p=0.045), upper airways infections (correlated to use of prednisone − p=0.0004, mycophenolate mofetil − p=0.0005, and cyclosporine − p=0.025), and pneumonia (associated to prednisone − p=0.017). Conclusion Prednisone was the drug more often associated with presence of infections, pointing to the need for a more judicious management of this drug.

RESUMO Objetivo Determinar a incidência de infecções em uma população com lúpus eritematoso sistêmico e a caracterização das mesmas quanto aos locais de origem, assim como estudar possíveis associações das infecções com a terapêutica utilizada. Métodos Estudo retrospectivo analítico utilizando dados de prontuários de indivíduos com lúpus eritematoso sistêmico de um único hospital universitário. Foram investigados 144 pacientes acompanhados pelo período de 5 anos. Os dados coletados incluíam idade do paciente e idade de início do lúpus, sexo e etnia, tempo de duração da doença antes do período do estudo, medicamentos administrados, dose cumulativa de prednisona, ocorrência de infecções e seu local de origem. Resultados As infecções mais observadas foram as do trato urinário (correlacionadas com o uso de prednisona − p<0,0001, e ciclofosfamida − p=0,045), infecções das vias aéreas superiores (correlacionadas com o uso de prednisona − p=0,0004, micofenolato de mofetila − p=0,0005 e ciclosporina − p=0,025) e pneumonia (correlacionadas ao uso de prednisona − p=0,017). Conclusão A prednisona foi o medicamento mais associado com a presença de infecções, apontando para a necessidade de um manejo mais judicioso desse medicamento.

Characteristics of severe acute respiratory infection associated hospitalization in Yemen, 2014/15

This study aims to describe etiological agents, demographic details of patients, seasonality and underlying conditions among patients hospitalized due to viral severe acute respiratory infection [SARI] in Yemen. We carried out a retrospective descriptive analysis of data from January 2014 to December 2015. Nasopharyngeal swabs were taken from each patient for laboratory testing. A total of 1346 diagnostic specimens were tested, of which 733 [54%] were positive for influenza viruses. Influenza A[H3] and A[H1N1] pdm09 predominated. Respiratory syncytial virus [RSV] was reported predominantly among children [41%]. Males [61%] were more affected than females. The median age was 1 year [range 0.5-94.0]. The median length of hospitalization was 6 days. Chronic cardiovascular disease was the most commonly reported underlying condition, but 67% had no documented underlying disease. Respiratory viruses, particularly RSV, adenovirus and influenza, were commonly associated with hospitalization for SARI

¿Hay una asociación entre deficiencia de vitamina D y riesgo de bronquiolitis y asma bronquial en la infancia?: Una revisión crítica / Is there a relation between vitamin D deficiency and an increased risk for bronchiolitis and bronchial asthma in childhood?: A critical revision

Se revisa críticamente la información científica relacionada con deficiencia de vitamina D (DVD) y riesgo de infecciones respiratorias agudas bajas (IRAB) o asma bronquial en niños. Las IRAB, en especial por virus respiratorio sincicial (VRS) están asociadas a una alta carga de enfermedad. Al no contar aún con una vacuna para ellas, las medidas preventivas y de sostén son las más importantes. El DVD es prevalente en todos los ambientes geográficos, con consecuencias ligadas al metabolismo de calcio y óseo, pero también alteraciones de la inmunidad. Hay evidencia inicial de una asociación entre DVD y mayor riesgo de IRAB, especialmente durante los primeros meses de vida; alelos de algunos polimorfismos del receptor de vitamina D podrían asociarse a un mayor riesgo de IRAB. Este escenario cosmopolita, justifica estudiar el impacto de medidas de suplementación de VD adaptadas a las realidades locales, a la madre durante el embarazo y/o al niño en los primeros meses de vida, que impacten sobre el riesgo de presentar IRAB y asma.

We critically review the information about vitamin D deficiency (VDD) and risk of lower respiratory infections and asthma in children. Acute lower respiratory infections (ALRI), particularly those due to respiratory syncytial virus (RSV) are associated with a high burden of disease. In theabsence of a vaccine for them, prevention and support during illness are important measures to reduce the risk of acquiring the condition or decreasing its severity. VDD has been described as prevalent in all geographical environments; its consequences are linked to calcium and bone metabolism, but also to impaired immunity. Recent evidence of an association between VDD and increased risk of ALRI, especially during the first few months of life has been demonstrated; alleles of some polymorphism of vitamin D receptor may be involved in an increased risk of LRTI. It is justified to study the impact of measures of vitamin D supplementation adapted to local environments, including the appropriate doses to the mother during pregnancy and/or to the child in the first months of life, on the risk of ALRI, or asthma in later ages.