Relative incidence of interstitial lung diseases in Brazil / Incidência relativa de doenças pulmonares intersticiais no Brasil

ABSTRACT Objective: To assess the relative frequency of incident cases of interstitial lung diseases (ILDs) in Brazil. Methods: This was a retrospective survey of new cases of ILD in six referral centers between January of 2013 and January of 2020. The diagnosis of ILD followed the criteria suggested by international bodies or was made through multidisciplinary discussion (MDD). The condition was characterized as unclassifiable ILD when there was no specific final diagnosis following MDD or when there was disagreement between clinical, radiological, or histological data. Results: The sample comprised 1,406 patients (mean age = 61 ± 14 years), and 764 (54%) were female. Of the 747 cases exposed to hypersensitivity pneumonitis (HP)-related antigens, 327 (44%) had a final diagnosis of HP. A family history of ILD was reported in 8% of cases. HRCT findings were indicative of fibrosis in 74% of cases, including honeycombing, in 21%. Relevant autoantibodies were detected in 33% of cases. Transbronchial biopsy was performed in 23% of patients, and surgical lung biopsy, in 17%. The final diagnoses were: connective tissue disease-associated ILD (in 27%), HP (in 23%), idiopathic pulmonary fibrosis (in 14%), unclassifiable ILD (in 10%), and sarcoidosis (in 6%). Diagnoses varied significantly among centers (c2 = 312.4; p < 0.001). Conclusions: Our findings show that connective tissue disease-associated ILD is the most common ILD in Brazil, followed by HP. These results highlight the need for close collaboration between pulmonologists and rheumatologists, the importance of detailed questioning of patients in regard with potential exposure to antigens, and the need for public health campaigns to stress the importance of avoiding such exposure.

RESUMO Objetivo: Avaliar a frequência relativa de casos incidentes de doenças pulmonares intersticiais (DPI) no Brasil. Métodos: Levantamento retrospectivo de casos novos de DPI em seis centros de referência entre janeiro de 2013 e janeiro de 2020. O diagnóstico de DPI seguiu os critérios sugeridos por órgãos internacionais ou foi feito por meio de discussão multidisciplinar (DMD). A condição foi caracterizada como DPI não classificável quando não houve um diagnóstico final específico após a DMD ou houve discordância entre dados clínicos, radiológicos ou histológicos. Resultados: A amostra foi composta por 1.406 pacientes (média de idade = 61 ± 14 anos), sendo 764 (54%) do sexo feminino. Dos 747 casos expostos a antígenos para pneumonite de hipersensibilidade (PH), 327 (44%) tiveram diagnóstico final de PH. Houve relato de história familiar de DPI em 8% dos casos. Os achados de TCAR foram indicativos de fibrose em 74% dos casos, incluindo faveolamento, em 21%. Autoanticorpos relevantes foram detectados em 33% dos casos. Biópsia transbrônquica foi realizada em 23% dos pacientes, e biópsia pulmonar cirúrgica, em 17%. Os diagnósticos finais foram: DPI associada à doença do tecido conjuntivo (em 27%), PH (em 23%), fibrose pulmonar idiopática (em 14%), DPI não classificável (em 10%) e sarcoidose (em 6%). Os diagnósticos variaram significativamente entre os centros (c2 = 312,4; p < 0,001). Conclusões: Nossos achados mostram que DPI associada à doença do tecido conjuntivo é a DPI mais comum no Brasil, seguida pela PH. Esses resultados destacam a necessidade de uma estreita colaboração entre pneumologistas e reumatologistas, a importância de fazer perguntas detalhadas aos pacientes a respeito da potencial exposição a antígenos e a necessidade de campanhas de saúde pública destinadas a enfatizar a importância de evitar essa exposição.

Enfermedad pulmonar intersticial difusa secundaria a neumonitis por hipersensibilidad de patrón mixto: reporte de caso y revisión de literatura / Diffuse interstitial lung disease secondary to mixed pattern hypersensitivity pneumonitis: Case report and literature review

La enfermedad pulmonar intersticial difusa (EPID) supone un amplio grupo heterogéneo de enfermedades caracterizadas por hallazgos en su intersticio pulmonar, específicamente relacionados con su engrosamiento, lo cual impacta significativamente en el intercambio gaseoso y la mecánica ventilatoria del paciente. El diagnóstico se genera acorde a la clínica del paciente, el uso de imágenes y la histopatología. El tratamiento guarda relación directa con el patrón pulmonar estructural que presente la EPID. Se presenta el caso clínico de una paciente femenina de 32 años, indígena, quien ingresa por exacerbación de disnea, con antecedente de neumonitis por hipersensibilidad, adicional a otros antecedentes clínicos que guardan relación estrecha con la EPID.

Diffuse interstitial lung disease (ILD) is a large heterogeneous group of diseases characterized by findings in the pulmonary interstitium, specifically changes related to thickening of the interstitium, which significantly impacts the patient's gas exchange and ventilatory mechanics. The diagnosis is generated according to the patient's clinical presentation, imaging and histopathology. The treatment is directly related to the structural pulmonary pattern of ILD. We present the clinical case of a 33-year-old female patient of indigenous ethnicity who is admitted for exacerbation of dyspnea, with a history of hypersensitivity pneumonitis in addition to other clinical antecedents that are closely related to ILD.

Prevalencia de alveolitis seca asociada a urgencias dolorosas durante el aislamiento social preventivo y obligatorio de la pandemia COVID-19 en un servicio de urgencias del área bonaerense metropolitana en la República ArgentinaPrevalence of dry socket associated with urgent dental extractions due to pain performed at an emergency service in the Buenos Aires Metropolitan Area during the mandatory preventive social isolation for the COVID-19 pandemic in Argentina / Prevalence of dry socket associated with urgent dental extractions due to pain performed at an emergency service in the Buenos Aires Metropolitan Area during the mandatory preventive social isolation for the COVID-19 pandemic in Argentina

Objective: To evaluate the prevalence of dry socket as a postoperative complication in cases where there was intense local pain in the preoperative state, during the preventive mandatory social isolation (PMSI) for the COVID-19 pandemic in Argentina. Methods: This was a descriptive study, which included 1209 walk-in patients at the emergency and orientational service at Buenos Aires University School of Dentistry during the PMSI from March 20 to June 20, 2020, with indication for dental extraction as well as intense acute pain at the surgical site. The presence of dry socket was exploratoryly associated with the variables age, sex, smoking and chronic medication use. Results: 1209 patients were operated, resulting in a total 1372 dental extractions. Average patient age was 41 years. The prevalence found in this study was 1.06%. Conclusion: The prevalence of dry socket was 1%, not being higher than other experiences where pain was not considered a condition prior to extraction.

Objetivo: Evaluar la prevalencia de alveolitis seca como complicación postquirúrgica, cuando existió dolor intenso local en el preoperatorio, durante el Aislamiento Social Preventivo y Obligatorios (ASPO) de la pandemia COVID-19 en la República Argentina. Material y Métodos: Se realizó un estudio descriptivo en el que fueron incluidos 1209 pacientes, que presentaron indicación de exodoncia y concurrieron al servicio de urgencias y orientación de pacientes de la Facultad de Odontología de la universidad de Buenos Aires, durante el ASPO en un periodo comprendido entre el 20 de marzo y el 20 de junio de 2020, con dolor agudo e intenso en el sitio quirúrgico. La presencia de alveolitis seca fue asociada de forma exploratoria con las variables edad, sexo, tabaquiamo y medicación de uso crónico. Resultados: Fueron operados 1209 pacientes a los que se les realizaron un total de 1372 exodoncias, con un promedio de edad 41 años. La prevalencia fue de 1,06%. Conclusión: La prevalencia de alveolitis seca fue del 1%, no siendo superior a otras experiencias donde no se consideró al dolor como una condición previa a la exodoncia.

Sleep parameters in patients with chronic hypersensitivity pneumonitis: a case-control study / Parâmetros do sono em pacientes com pneumonite de hipersensibilidade crônica: estudo de caso-controle

ABSTRACT Objective: To compare patients with chronic hypersensitivity pneumonitis (cHP) and controls with normal spirometry in terms of their sleep characteristics, as well as to establish the prevalence of obstructive sleep apnea (OSA) and nocturnal hypoxemia. Secondary objectives were to identify factors associated with OSA and nocturnal hypoxemia; to correlate nocturnal hypoxemia with the apnea-hypopnea index (AHI) and lung function, as well as with resting SpO2, awake SpO2, and SpO2 during exercise; and to evaluate the discriminatory power of sleep questionnaires to predict OSA. Methods: A total of 40 patients with cHP (cases) were matched for sex, age, and BMI with 80 controls, the ratio of controls to cases therefore being = 2:1. The STOP-Bang questionnaire, the Epworth Sleepiness Scale (ESS), the Pittsburgh Sleep Quality Index, the Berlin questionnaire and the Neck circumference, obesity, Snoring, Age, and Sex (NoSAS) score were applied to all cases, and both groups underwent full-night polysomnography. Results: The patients with cHP had longer sleep latency, lower sleep efficiency, a lower AHI, a lower respiratory disturbance index, fewer central apneas, fewer mixed apneas, and fewer hypopneas than did the controls. The patients with cHP had significantly lower nocturnal SpO2 values, the percentage of total sleep time spent below an SpO2 of 90% being higher than in controls (median = 4.2; IQR, 0.4-32.1 vs. median = 1.0; IQR, 0.1-5.8; p = 0.01). There were no significant differences between cases with and without OSA regarding the STOP-Bang questionnaire, NoSAS, and ESS scores. Conclusions: The prevalence of OSA in cHP patients (cases) was high, although not higher than that in controls with normal spirometry. In addition, cases had more hypoxemia during sleep than did controls. Our results suggest that sleep questionnaires do not have sufficient discriminatory power to identify OSA in cHP patients.

RESUMO Objetivo: Comparar pacientes com pneumonite de hipersensibilidade crônica (PHc) e controles com espirometria normal quanto às características do sono, bem como estabelecer a prevalência de apneia obstrutiva do sono (AOS) e hipoxemia noturna. Os objetivos secundários foram identificar fatores associados à AOS e hipoxemia noturna; correlacionar a hipoxemia noturna com o índice de apneias e hipopneias (IAH), função pulmonar, SpO2 em repouso, SpO2 em vigília e SpO2 durante o exercício; e avaliar o poder discriminatório de questionários do sono para predizer AOS. Métodos: Um total de 40 pacientes com PHc (casos) foram emparelhados por sexo, idade e IMC com 80 controles (2:1). O questionário STOP-Bang, a Escala de Sonolência de Epworth (ESE), o Índice de Qualidade do Sono de Pittsburgh, o questionário de Berlim e o escore Neck circumference, obesity, Snoring, Age, and Sex (NoSAS, circunferência do pescoço, obesidade, ronco, idade e sexo) foram aplicados a todos os casos, e ambos os grupos foram submetidos a polissonografia de noite inteira. Resultados: Os pacientes com PHc apresentaram maior latência do sono, menor eficiência do sono, menor IAH, menor índice de distúrbio respiratório, menos apneias centrais, menos apneias mistas e menos hipopneias do que os controles. Os pacientes com PHc apresentaram SpO2 noturna significativamente menor; a porcentagem do tempo total de sono com SpO2 < 90% foi maior que nos controles (mediana = 4,2; IIQ: 0,4-32,1 vs. mediana = 1,0; IIQ: 0,1-5,8; p = 0,01). Não houve diferenças significativas entre os casos com e sem AOS quanto à pontuação no questionário STOP-Bang, no NoSAS e na ESE. Conclusões: A prevalência de AOS em pacientes com PHc (casos) foi alta, embora não tenha sido maior que a observada em controles com espirometria normal. Além disso, os casos apresentaram mais hipoxemia durante o sono do que os controles. Nossos resultados sugerem que os questionários do sono não têm poder discriminatório suficiente para identificar AOS em pacientes com PHc.

Progressive fibrotic interstitial lung disease / Doença pulmonar intersticial fibrosante progressiva

ABSTRACT Many interstitial lung diseases (ILDs) share mechanisms that result in a progressive fibrosing phenotype. In Brazil, the most common progressive fibrosing interstitial lung diseases (PF-ILDs) are chronic hypersensitivity pneumonitis, idiopathic pulmonary fibrosis, unclassified ILD, and connective tissue diseases. PF-ILD is seen in approximately 30% of patients with ILD. Because PF-ILD is characterized by disease progression after initiation of appropriate treatment, a diagnosis of the disease resulting in fibrosis is critical. Different criteria have been proposed to define progressive disease, including worsening respiratory symptoms, lung function decline, and radiological evidence of disease progression. Although the time elapsed between diagnosis and progression varies, progression can occur at any time after diagnosis. Several factors indicate an increased risk of progression and death. In the last few years, antifibrotic drugs used in patients with idiopathic pulmonary fibrosis have been tested in patients with PF-ILD. The effects of nintedanib and placebo have been compared in patients with PF-ILD, a mean difference of 107.0 mL/year being observed, favoring nintedanib. The U.S. Food and Drug Administration and the Brazilian Health Regulatory Agency have approved the use of nintedanib in such patients on the basis of this finding. Pirfenidone has been evaluated in patients with unclassified ILD and in patients with other ILDs, the results being similar to those for nintedanib. More studies are needed in order to identify markers of increased risk of progression in patients with ILD and determine the likelihood of response to treatment with standard or new drugs.

RESUMO Muitas doenças pulmonares intersticiais (DPI) compartilham mecanismos que resultam em um fenótipo fibrosante progressivo. No Brasil, as doenças pulmonares intersticiais fibrosantes progressivas (DPI-FP) mais comuns são a pneumonite de hipersensibilidade crônica, a fibrose pulmonar idiopática, a DPI não classificada e as doenças do tecido conjuntivo. A DPI-FP é observada em aproximadamente 30% dos pacientes com DPI. Como a DPI-FP é caracterizada pela progressão da doença após o início do tratamento adequado, é fundamental diagnosticar a doença que resulta em fibrose. Diferentes critérios foram propostos para definir doença progressiva, incluindo piora dos sintomas respiratórios, declínio da função pulmonar e evidências radiológicas de progressão da doença. Embora o tempo decorrido entre o diagnóstico e a progressão varie, a progressão pode ocorrer a qualquer momento após o diagnóstico. Vários fatores indicam risco aumentado de progressão e morte. Nos últimos anos, antifibróticos usados em pacientes com fibrose pulmonar idiopática foram testados em pacientes com DPI-FP. Os efeitos do nintedanibe e placebo foram comparados em pacientes com DPI-FP, com diferença média de 107,0 mL/ano a favor do nintedanibe. A Food and Drug Administration (EUA) e a Agência Nacional de Vigilância Sanitária aprovaram o uso do nintedanibe em tais pacientes com base nesse achado. A pirfenidona foi avaliada em pacientes com DPI não classificada e em pacientes com outras DPI, e os resultados foram semelhantes aos do nintedanibe. Mais estudos são necessários para identificar marcadores de risco aumentado de progressão em pacientes com DPI e determinar a probabilidade de resposta ao tratamento com medicamentos-padrão ou novos.

Carbohydrate antigen 15-3 as a marker of disease severity in patients with chronic hypersensitivity pneumonitis* / Antígeno carboidrato 15-3 como marcador de gravidade da doença em pacientes com pneumonite de hipersensibilidade crônica

ABSTRACT Objective: Biomarkers associated with mucin 1, such as Krebs von den Lungen-6 and carbohydrate antigen (CA) 15-3, are increased in various interstitial lung diseases. Our aim was to determine whether CA 15-3 could be considered a biomarker of disease severity in patients with chronic hypersensitivity pneumonitis (cHP). Methods: This was a prospective observational study involving adult patients with cHP. Serum levels of CA 15-3 were measured and were correlated with variables related to disease severity and extension. HRCT scans were quantitatively analyzed using a computational platform and an image analysis tool (Computer Aided Lung Informatics for Pathology Evaluation and Rating). CA 15-3 levels were normalized by logarithmic transformation. Results: The sample comprised 41 patients. The mean age of the patients was 60.1 ± 11.6 years. The mean FVC in % of predicted was 70.3% ± 17.3%, and the median of the serum level of CA 15-3 was 48.1 U/mL. CA 15-3 levels inversely correlated with FVC in % of predicted (r = −0,30; p = 0,05), DLCO in % of predicted (r = −0,54; p < 0,01), and SpO2 at the end of a 4-min step test (r = −0,59; p < 0,01), but they directly correlated with total quantitative HRCT scores (r = 0,47; p = 0,004), especially regarding ground-glass opacities (r = 0.58; p < 0,001). Conclusions: CA 15-3 is likely to be a biomarker of disease severity of patients with cHP, particularly regarding gas exchange abnormalities.

RESUMO Objetivo: Biomarcadores associados à mucina-1, tais como Krebs von den Lungen-6 e carbohydrate antigen (CA, antígeno carboidrato) 15-3, encontram-se aumentados em diversas doenças pulmonares intersticiais. Nosso objetivo foi determinar se CA 15-3 poderia ser considerado um biomarcador de gravidade de doença em pacientes com pneumonite de hipersensibilidade crônica (PHc). Métodos: Estudo prospectivo observacional envolvendo pacientes adultos com PHc. Os níveis séricos de CA 15-3 foram medidos e correlacionados com variáveis relacionadas à gravidade e extensão da doença. As imagens de TCAR foram analisadas quantitativamente utilizando uma plataforma computacional e uma ferramenta de análise de imagem (Computer-Aided Lung Informatics for Pathology Evaluation and Rating). Os níveis de CA 15-3 foram normalizados por transformação logarítmica. Resultados: A amostra foi composta por 41 pacientes. A média de idade dos pacientes foi de 60,1 ± 11,6 anos. A média da CVF em % do previsto foi de 70,3% ± 17,3%, e a mediana do nível sérico de CA 15-3 foi de 48,1 U/mL. Os níveis de CA 15-3 se correlacionaram inversamente com CVF em % do previsto (r = −0,30; p = 0,05), DLCO em % do previsto (r = −0,54; p < 0,01) e SpO2 ao final de um teste de degrau de 4 minutos (r = −0,59; p < 0,01), mas se correlacionaram diretamente com a pontuação quantitativa total da TCAR (r = 0,47; p = 0,004), especialmente quanto a opacidades em vidro fosco (r = 0,58; p < 0,001). Conclusões: É provável que o CA 15-3 seja um biomarcador de gravidade de doença em pacientes com PHc, particularmente quanto a anormalidades nas trocas gasosas.

Incidencia de complicaciones post quirúrgicas en cirugía bucal / Incidence of post-surgical complications in oral surgery

OBJETIVO: El objetivo principal de este estudio fue determinar la incidencia de complicaciones post cirugía bucal. METODOLOGÍA: Se desarrolló un estudio observacional, descriptivo, con el uso del registro prospectivo de la totalidad de pacientes ingresados para cirugía bucal del Complejo Hospitalario San Borja-Arriarán durante doce meses de observación (abril 2017 a marzo 2018). RESULTADOS: La muestra estuvo conformada por 532 pacientes sometidos a procedimientos quirúrgicos de cirugía bucal y 29 casos de complicación postquirúrgica. La incidencia de complicaciones alcanzó un 5,5% y se observó de manera predominante en intervenciones de tipo exodoncia. La complicación mayormente observada fue la alveolitis alcanzando un 2,5% de las cirugías de terceros molares y un 3,7% de las exodoncias de otros dientes. Las hemorragias postoperatorias se observaron en un 1,1% de las cirugías de terceros molares. Otras complicaciones postquirúrgicas fueron abscesos de espacios faciales, parestesia del nervio alveolar inferior, hematomas, equimosis y periostitis. CONCLUSIÓN: Los resultados fueron similares a los reportados en la literatura tanto en su frecuencia como en el tipo de complicación.

OBJECTIVE: The main objective of this investigation was to determine the incidence of postoperative complications in oral surgery. MATERIALS AND METHODS: An observational and descriptive study was developed with the use of the prospective registry of the patients admitted for oral surgery in the San Borja Arriarán Hospital Complex for a twelve-month period of observation (April 2017 to March 2018). RESULTS: The sample consisted of 532 patients undergoing surgical procedures of oral surgery and 29 cases of postoperative complications. The incidence of complications reached 5,5% and it was observed predominantly in interventions of tooth extraction. The most commonly observed complication was dry socket, reaching 2,5% of third molar surgeries and 3,7% of extractions of other teeth. Postoperative hemorrhages were observed in 1,1% of third molar surgeries. Other postoperative complications were facial spaces abscesses, paresthesia of the inferior alveolar nerve, bruising, ecchymosis and periostitis. CONCLUSIONS: The results were similar to those reported in the literature both in their frequency and in the type of complication.

Diagnóstico diferencial de la fibrosis pulmonar idiopática / Differential diagnosis of idiopathic pulmonary fibrosis

Para el diagnóstico certero de fibrosis pulmonar idiopática (FPI) es de vital importancia la presencia de un patrón tomográfico definitivo de neumonía intersticial usual (NIU), en un contexto clínico adecuado. El interrogatorio dirigido, el uso de cuestionarios validados, una evaluación reumatológica acuciosa y exámenes complementarios son importantes para descartar causas secundarias de fibrosis pulmonar como neumonitis por hipersensibilidad (NHS), enfermedades del tejido conectivo (ETC), toxicidad por drogas y algunas neumoconiosis que pueden imitar el patrón radiológico y muchas veces dificultar un diagnóstico adecuado de FPI.

For the accurate diagnosis of idiopathic pulmonary fibrosis (IPF), the presence of a definitive tomographic pattern of usual interstitial pneumonia (UIP) is of vital importance, in an appropriate clinical context. Targeted interrogation, the use of valid questionnaires, an acute rheumatologic evaluation and complementary examinations are important to rule out secondary causes such as hypersensitivity pneumonitis (HP), connective tissue diseases (CTD), drug toxicity and some pneumoconiosis that can mimic the radiological pattern and often hinder a clear diagnosis of IPF.

Enfermedades pulmonares intersticiales. Una perspectiva actual / Update on interstitial lung diseases

Interstitial lung diseases are a broad, diverse, challenging group of diseases, most of them chronic whose prognosis is not good. In the last two decades there have been considerable advances in the knowledge of the epidemiology, pathological and genetic bases and treatment of several of these diseases. This article summarizes and presents updated information about their classification, new knowledge on genetics and treatments in idiopathic pulmonary fibrosis, advances in the diagnosis and management of hypersensitivity pneumonitis and a review of the broad spectrum of interstitial diseases associated with connective tissue diseases. Several clinical trials are currently underway whose results will be available in the coming years and will provide more information and tools to improve the treatment of these patients.

Unusual case of intraoperative acute cor pulmonale during spine surgery

Perioperative complications of prolonged surgery and prone positioning are well known. Changing the position from prone to supine in an anesthetized patient can result in aspiration and airway obstruction. The drop-in oxygen saturation and hemodynamic changes are warning signs and can cause acute cardiac decompensation leading to diagnostic dilemma. We present a case where the patient had these changes after changing the position after spine surgery in prone position. A quick response from the treating anesthesiologist and active involvement of cardiologist helped in reaching the diagnosis and successful management of aspiration pneumonitis in this patient. We conclude that a quick response in investigations and multimodality approach helps in the management of such perioperative complications.

La alveolitis dental en pacientes adultos del Policlínico René Bedia Morales. Municipio Boyeros / Dental Alveolitis in adult patients in René Bedia Morales policlinic at Boyeros municipality

RESUMEN Introducción: la alveolitis dentaria es una complicación pos-textracción dental, local, dolorosa y reversible del alveolo. Objetivo: caracterizar la alveolitis dental en pacientes adultos del Policlínico "René Bedia Morales", perteneciente al municipio Boyeros. Mareriales y métodos: se realizó un estudio descriptivo de corte transversal, en el Policlínico "René Bedia Morales", municipio Boyeros, provincia La Habana, en el periodo comprendido de septiembre de 2016 a septiembre de 2017. El universo estuvo constituido por 250 pacientes, de ambos sexos. Diagnosticados con alveolitis dental tras haberse realizado exodoncia durante ese periodo. La muestra quedó conformada por 187 pacientes que cumplieron con los criterios de inclusión y exclusión. Se estudiaron las variables: edad, sexo, tipo de alveolitis y factores asociados a las mismas. La información fue recogida en un modelo de recogida de datos, bajo su consentimiento informado. Resultados: el grupo de edad más afectado fue el de 35-59 años, con 47,59 %. Predominó el sexo femenino, con un 66,84 %. Prevaleció la alveolitis seca, en un 55,08 %. Relacionado con las conductas inadecuadas del paciente, la afectación fue de un 40,64 %. El no cumplimiento de las indicaciones postoperatorias y fumar, luego de la exodoncia, fueron los factores más asociados a la alveolitis seca; con un 53,48 % y un 41,18 %, respectivamente. Conclusiones: la alveolitis afectó fundamentalmente a los pacientes de 35-59 años de edad, del sexo femenino. Con mayor frecuencia predominó la alveolitis seca relacionada a las conductas inadecuadas del paciente (AU).

ABSTRACT Introduction: Dental alveolitis is a local, painful dental pos extraction complication which is reversible. Objective: Provide a characterization of dental alveolitis in René Bedia Morales policlinic at Boyeros Municipality. Materials and methods: A descriptive transversal study was performed in René Bedia Morales policlinic at Boyeros Municipality, in Havana Province. The study was performed in a time span between September 2016 to September 2017. The study universe was constituted by 250 patients of both sexes diagnosed with dental alveolitis after have made extractions in that period of time and the sample remained formed for 187 patients , that met with the criteria of inclusion and exclusion. Age, sex, type of alveolitis and associated factors were the variables considered in the present study. The data was collected in a input data form, under the patients concern. Results: The most affected age group was from 35 to 59 years old which represents a 47,59 %, being the feminine sex the predominant group which represents a 66,84 %. Dry alveolitis was predominant in 55,08 % related to inadequate behaviors within a 40,64 % The most frequent factors associated to the non-fulfillment of the pos operatory orders, such as smoking after having performed the procedure of exodontia with a 53,48 % and 41,18 % respectively. Conclusions: Alveolitis mainly affects patients within 35-59 years old, feminine sex, and also related to inadequate behaviors of the patients (AU).

Características clínicas, funcionais e sobrevida dos pacientes com pneumonia de hipersensibilidade do Ambulatório de Doenças Pulmonares Intersticiais do Hospital das Clinicas da Universidade Federal de Minas Gerais (HC-UFMG) / Clinical, functional and survival in patients with hypersensitivity pneumonia Center of Pulmonary Interstitial Disease of Hospital das Clínicas da Universidade Federal de Minas Gerais (HC- UFMG)

A pneumonia de hipersensibilidade (PH) constitui síndrome inflamatória causada pela resposta imune exagerada a partículas antigênicas inaladas. Objetivo: descrever características clínicas, radiológicas, funcionais esobrevida de pacientes com PH. Metodologia: estudo retrospectivo, envolvendo pacientes em acompanhamento no ambulatório de doenças pulmonares intersticiais do HC-UFMG no período de 2011 a 2015. Analisados dados clínicos, radiológicos, funcionais e morfológicos coletados através de um protocolo padronizado. Resultados: Dentre 139 pacientes com doenças intersticiais pulmonares, 34 (24%) tinham PH, com idade de 60,7 ± 18,1 anos. Exposição a mofo foi a etiologia mais frequente (19;55%). A forma crônica foi predominante (100% doas casos), assim como a presença de padrão reticular na tomografia de tórax (100%), com ou sem faveolamento. Observou-se distúrbio restritivo leve (CVF=69,00 ± 17,62L) associado a redução moderada da difusão de monóxido de carbono (59,20 ± 16,99%). O lavado broncoalveolar não auxiliou no diagnóstico e a biópsia transbrônquica foi diagnóstica em 5 (55%) casos e a biópsia cirúrgica foi conclusiva em 6 (85,7%). A sobrevida mediana foi de 75 meses. Conclusão: Nesta amostra de um ambulatório de referência, a PH respondeu por cerca de um quarto dos pacientes com doença intersticial pulmonar. A exposição a mofo foi a principal etiologia e a mortalidade significativa, o que reforça a importância da adoção de medidas preventivas através do reconhecimento precoce da exposição aos fatores de risco. (AU)

Hypersensitivity pneumonitis (HP) inflammatory is a syndrome caused by an excessive immune response to inhaled antigen particles. Objective:To describe clinical, radiological and functional characteristics and survival in patients with HP. Methodology: Retrospective study involving patients followed up at the pulmonary interstitial diseases clinic of the HC-UFMG from 2011 to 2015. Clinical, radiological, functional and morphological data were analysed from a standardized protocol. Results: Among 139 patients with interstitial lung disease, 34 (24%) had HP, aged 60.7 ± 18.1 years. Mold exposure was the most frequent cause (19; 55%). The chronic form predominated (100% donate cases), as well as the presence of reticular pattern on the chest tomography (100%), with or without honeycombing. There was mild restrictive lung disease (FVC = 69.00 ± 17,62L) associated with moderate reduction in carbon monoxide diffusion (59.20 ± 16.99%). Bronchoalveolar lavage did not help in the diagnosis and transbronchial biopsy was diagnostic in 5 (55%) cases; surgical biopsy was conclusive in 6 (85.7%). Median survival was 60 months. Conclusion: In this sample of a reference clinic, HP accounted for about a quarter of the patients with interstitial lung disease. The mold exposure was the main etiology and the mortality rate was significant, what reinforces the importance of adopting preventive measures through early recognition of exposure to risk factors. (AU)

Role of NLRP3 in the development of silicosis pulmonary fibrosis and the effect of its inhibitor MCC950 / 中国职业医学

OBJECTIVE: To investigate the mechanism of nucleotide-binding oligomerization domain-like receptor family pyrin domain-containing 3( NLRP3) inflammasome in the development and progression of silicosis pulmonary fibrosis,and to explore the effect of NLRP3 inhibitor MCC950 on silicosis pulmonary fibrosis. METHODS: The specific pathogen free Wistar male rats were randomly divided into control group,model group and inhibitor group,with 20 rats in each group.The rats in the model group and the inhibitor group were given a 1. 0 m L of free silica suspension at a concentration of 50 g/L by the non-exposure endotracheal intubation method. Rats in the control group were given an equal volume of sterilized 0. 9% sodium chloride solution. Rats in the inhibitor group were given 10 mg/kg body weight of MCC950 once every other day by gavage,while rats in the model group and the control group were given an equal volume of sterilized0. 9% sodium chloride solution. Five rats were randomly sacrificed at 7,14,28,and 56 days after model establishment.The body weight of the rats was weighed,and the degree of pulmonary alveolitis and pulmonary fibrosis was observed. The enzyme-linked immunosorbent assay was used to detect the levels of interleukin( IL)-1β,IL-18 and transforming growth factor-β1( TGF-β1) of lung tissues. Western blotting was used to detect the relative expression of NLRP3 and Caspase-1protein. RESULTS: The body mass of rats increased with increasing observation time( P < 0. 01). The scores of pulmonary fibrosis and the levels of IL-1β,IL-18 and TGF-β1 in lung tissue had statistical significance in the main effect of dust treatment( P < 0. 01),and the order from high to low was model group,inhibitor group and control group( P < 0. 01). At the time points of 7,14,28,and 56 days after model establishment,the score of pulmonary alveolitis and the relative expression of NLRP3 and Caspase-1 protein in lung tissues in the inhibitor group were lower than that of the model group( P < 0. 01),but higher than that of the control group( P < 0. 01). CONCLUSION: The NLRP3/IL-1β/TGF-β1 signaling pathway plays an important role in the development of silicosis pulmonary fibrosis. MCC950 can inhibit the development and progression of pulmonary fibrosis of silicosis by inhibiting the activation of NLRP3 inflammasome.

Pleuroparenchymal fibroelastosis: report of two cases in Brazil / Fibroelastose pleuroparenquimatosa: relato de dois casos no Brasil

ABSTRACT Pleuroparenchymal fibroelastosis (PPFE) is a rare lung disease. It can be idiopathic or associated with any one of various conditions. To our knowledge, this is the first report of two cases of PPFE in Brazil. Our first patient presented with pleural and subpleural fibrosis in the upper lobes; a spiculated nodule in the left upper lobe; and a mild reticular pattern in the lower lobes. Surgical lung biopsy revealed PPFE in the upper lobes, including the nodule, and unclassified interstitial pneumonia in the left lower lobe. Our second patient had a history of exposure to domestic birds, indicating a risk of hypersensitivity pneumonitis, and presented with advanced lung disease, predominantly in the upper lobes, together with subpleural fibrosis.That patient underwent lung transplantation. In the explant specimen, PPFE and granulomas were identified, suggesting hypersensitivity pneumonitis as an associated cause.

RESUMO A fibroelastose pleuroparenquimatosa (FEPP) é uma doença pulmonar rara, podendo ser idiopática ou associada a diversas condições. Pelo que sabemos, este é o primeiro relato de dois casos de FEPP no Brasil. Nosso primeiro paciente apresentava fibrose pleural e subpleural nos lobos superiores, um nódulo espiculado no lobo superior esquerdo e um padrão reticular discreto nos lobos inferiores. A biópsia pulmonar cirúrgica demonstrou FEPP nos lobos superiores, incluindo no nódulo, e pneumonia intersticial não classificada no lobo inferior esquerdo. Nosso segundo paciente tinha história de exposição a aves domésticas, indicando um risco de pneumonite de hipersensibilidade, e doença pulmonar avançada predominando em lobos superiores, com fibrose subpleural. Esse paciente foi submetido a transplante pulmonar. No espécime do explante, FEPP e granulomas foram identificados, sugerindo pneumonite de hipersensibilidade como causa associada.

High-resolution computed tomography and histopathological findings in hypersensitivity pneumonitis: a pictorial essay / Aspectos tomográficos e histopatológicos da pneumonite por hipersensibilidade: ensaio iconográfico

Abstract Hypersensitivity pneumonitis is a diffuse interstitial and granulomatous lung disease caused by the inhalation of any one of a number of antigens. The objective of this study was to illustrate the spectrum of abnormalities in high-resolution computed tomography and histopathological findings related to hypersensitivity pneumonitis. We retrospectively evaluated patients who had been diagnosed with hypersensitivity pneumonitis (on the basis of clinical-radiological or clinical-radiological-pathological correlations) and had undergone lung biopsy. Hypersensitivity pneumonitis is clinically divided into acute, subacute, and chronic forms; high-resolution computed tomography findings correlate with the time of exposure; and the two occasionally overlap. In the subacute form, centrilobular micronodules, ground-glass opacities, and air trapping are characteristic high-resolution computed tomography findings, whereas histopathology shows lymphocytic inflammatory infiltrates, bronchiolitis, variable degrees of organizing pneumonia, and giant cells. In the chronic form, high-resolution computed tomography shows traction bronchiectasis, honeycombing, and lung fibrosis, the last also being seen in the biopsy sample. A definitive diagnosis of hypersensitivity pneumonitis can be made only through a multidisciplinary approach, by correlating clinical findings, exposure history, high-resolution computed tomography findings, and lung biopsy findings.

Resumo A pneumonite por hipersensibilidade é uma doença intersticial difusa, granulomatosa e de natureza inalatória, com inúmeros antígenos orgânicos e inorgânicos implicados. Nosso objetivo é ilustrar o espectro de anormalidades na tomografia de alta resolução do tórax e achados histopatológicos. Foram avaliadas, retrospectivamente, tomografias de alta resolução do tórax de pacientes com diagnóstico de pneumonite por hipersensibilidade estabelecido em correlação clínico-radiológica e clínico-radiológico-patológica em pacientes em que a biópsia esteve disponível. A pneumonite por hipersensibilidade é dividida, do ponto de vista clínico e didático, em aguda, subaguda e crônica, e as manifestações tomográficas da tomografia de alta resolução do tórax correlacionam-se com o tempo da evolução da doença, e por vezes se superpõem. Micronódulos centrolobulares, vidro fosco e aprisionamento aéreo são características tomográficas na manifestação subaguda, em que, histopatologicamente, se observam infiltrado inflamatório linfocítico, bronquiolite, graus variáveis de pneumonia em organização e células gigantes. Na fase crônica, a tomografia demonstra sinais de fibrose com bronquiolectasias de tração e eventualmente faveolamento, com predomínio superior, sendo observados também sinais de fibrose no estudo histopatológico. A abordagem multidisciplinar é definitiva no diagnóstico, que é realizado correlacionando-se as características clínicas, nexo causal de exposição, achados tomográficos e aspectos histopatológicos.

Frecuencia de alveolitis dentaria y factores que la caracterizan / Dental alveolitis frequency and factors characterizing it

Introducción: la alveolitis dentaria es la complicación postextracción dental más frecuente, caracterizada por un dolor postoperatorio en el alveolo, el cual se incrementa en severidad entre el primer y tercer día; síntoma que obliga al paciente a acudir al servicio estomatológico de inmediato. Objetivo: describir la frecuencia de alveolitis dentaria y los factores que la caracterizan en el área de salud del Policlínico Docente Enrique de los Ángeles Betancourt Nenínger. Materiales y métodos: se realizó un estudio descriptivo, observacional y transversal, en el mencionado policlínico, de septiembre 2012 a septiembre 2013, con 140 pacientes, que después de realizada la exodoncia presentaron esta afección. Se recogió información y procesaron variables sociodemográficas, de caracterización y riesgo de alveolitis. Resultados: el grupo de edad de 35 a 59 años representó el 5,72 %. El sexo femenino, 60 %; la localización mandibular, 51,4 %. El grupo dentario molares, 38,6 %; sin trauma del alveolo, 71,42 %, pero 82,85 % tienen hábito de fumar, y el 60 % no tuvo tratamiento con antibióticos. Conclusiones: se concluyó que el grupo más afectado fue desde la mediana edad hasta el comienzo de la tercera, afectando más a las féminas, la localización mandibular y al grupo dentario molares. El trauma en el alveolo tiene una menor frecuencia, pero el hábito de fumar está relacionado con la mayoría de los afectados, y el tratamiento con antibióticos no influye en la aparición o no de alveolitis.

Background: Dental alveolitis is the most frequent dental post-removal complication, characterized by post-surgery pain in the alveolus, seriously increasing in the first and third day: this symptom makes the patient immediately visit the stomatologic service. Aim: describing dental alveolitis frequency and factors characterizing it in the teaching Policlinic Enrique de los Angeles Betancourt Nenínger. Materials and Methods: a cross-sectional, observational, descriptive study was carried out in the before mentioned policlinic, from September 2012 to September 2013, with 140 patients showing this affection after removal. Information was collected and sociodemographic variables of alveolitis risk and characterization were processed. Outcomes: the 35-59 years age group represented 5.72 %, and the 14-19 years one, 0 % from the total of the removals carried out; the female gender, 60 %; mandibular location, 51.4 %. The dental group molars represented 38.6 %; without alveolar trauma, 71.42 %, but 82.85 of the patients were smokers, and 60 % had not treatment with antibiotics. Conclusions: it was concluded that the most affected age group was the one enclosing people from medium age to elder years, affecting more women, mandibular location and molars. The alveolar trauma is less frequent, but smoking habit is related with most of the affected people, and the treatment with antibiotics does not have influence in the alveolitis appearance or not.

Complicaciones postoperatorias asociadas a la cirugía del tercer molar inferior retenido / Postoperative complications associated with impacted lower third molar surgery

Antecedentes: La cirugía del tercer molar inferior retenido es unprocedimiento de rutina en la práctica de la cirugía bucal. Varias complicaciones surgen como resultado de esta intervención quirúrgica. Entre las más frecuentes se encuentran: dolor, infl amación, trismo, hemorragia, equimosis, alveolitis, infección, parestesia y dificultad para comer. Objetivos: El propósito de este estudio fue evaluar la incidencia de complicaciones postoperatorias en la cirugía del tercer molar inferior retenido en pacientes de la Unidad Académica deOdontología de la Universidad Autónoma de Nayarit a fin de tenerlas en cuenta y tomar las respectivas precauciones, ya sea para tratar de evitarlas en lo sucesivo o bien, para reconocerlas y darles tratamiento. No se incluye dolor, infl amación ni trismo. Material y métodos: Este estudio fue longitudinal y prospectivo de siete días consecutivos y de 30 días en total en 38 pacientes entre 16 y 38 años de edad. Se evaluaron las complicaciones postoperatorias relacionadas con la cirugía del tercer molar inferior. Resultados: Participaron 38 pacientes; 29 del género femenino (76.3 por ciento) y 9 del masculino (23.7 por ciento) de entre 16 y 38 años, con un promedio de edad de 23.16 ± 5.2 años. La complicación más frecuente fue la difi cultad para masticar seguida de equimosis...

Background: Impacted lower third molar surgery is a routine pro-cedure in the practice of oral surgery. However, there are various complications associated with the extraction of impacted mandibular third molars, the most common being pain, swelling, trismus, hemor-rhaging, ecchymosis, dry socket, infection, paresthesia, and diffi culty with chewing. Objectives: The aim of this study was to evaluate the incidence of postoperative complications following impacted lower third molar surgery in patients at the Academic Unit of Dentistry of the Autonomous University of Nayarit, so as to ensure these are taken into account and that the respective precautions are taken, either by attempting to avoid them in the future or to recognize and treat them. Pain, infl ammation and trismus are not analyzed in this paper. Material and methods: A longitudinal prospective study of 38 patients between the ages of 16 and 38 years old (with an average age 23.1) was carried out over seven consecutive days, with follow up examination performed at 15 and 30 days. The postoperative complications associated with lower third molar surgery were assessed. Results: 38 patients took part; 29 females (76.3%) and 9 males (23.7%) between the ages of 16 and 38 years, with a mean age of 23.16 ± 5.2 years old. The most common complication was diffi culty with chewing followed by ecchymosis...

Neumonitis por hipersensibilidad asociado al cuidado de aves / Hypersensitivity pneumonitis associated to birds care

La neumonitis por hipersensibilidad asociada al cuidado de las aves es uno de los tipos más frecuentes de esta que se presentan. Aunque no se tienen datos epidemiológicos claros sobre su prevalencia, en los hospitales llegan casos de este tipo. No es una patología muy común; sin embargo, una muestra representativa de la población se encuentra expuesta a las aves y, consecuentemente, a los antígenos que causan la enfermedad. Su diagnóstico temprano puede significar para el paciente evitar daños, al dejar de exponerse al antígeno; por el contrario, si no se realiza un diagnóstico temprano, puede generarse un daño pulmonar irreversible. En este artículo, se presenta un caso clínico de neumonitis por hipersensibilidad al cuidado de aves.

Hypersensitivity pneumonitis associated to birds care, is one of the most common types of pneumonitis. Although there is no clear epidemiological data of prevalence, many cases of pneumonitis arrive to hospitals. It is a very rare disorder, however, much of the population is exposed to birds and consequently to antigens that cause this disease. The early diagnosis can mean a reversible damage to the patient if stop exposure to the antigen, but otherwise if the diagnosis isn't made early, can generate an irreversible lung damage. In this paper, it is presented a case of hypersensitivity pneumonitis in birds care.

Eficacia del extracto fluido de Vimang® en el tratamiento de pacientes con alveolitis / Effectiveness of the American extract of Vimang® in the treatment of patients with alveolitis

Se realizó un ensayo clínico de fase III en 118 pacientes con alveolitis, atendidos en la consulta estomatológica del Hospital General Docente "Dr. Juan Bruno Zayas Alfonso" de Santiago de Cuba, para evaluar la eficacia del extracto fluido de Vimang® en el tratamiento de ellos. La muestra se dividió en 2 grupos (experimental y control), distribuidos aleatoriamente; los integrantes del primero, tratados con el mencionado extracto; y los del segundo, con Alvogyl. Los resultados del estudio fueron validados mediante el estadígrafo de Ji al cuadrado. Se concluye que el extracto fluido de Vimang® fue eficaz para eliminar la alveolitis en menor tiempo y sin reacciones adversas, por lo cual se recomendó generalizar su uso.

A phase III clinical trial of 118 patients with alveolitis, assisted in the out-patient stomatological department of "Dr. Juan Bruno Zayas Alfonso" Teaching General Hospital in Santiago de Cuba was carried out to evaluate the effectiveness of the fluid extract of Vimang® in their treatments. The sample was divided in 2 groups (experimental and control group), randomly distributed; the members of the first one was treated with the aforementioned extract; and those of the second group with Alvogyl. The results of the study were validated by means of the X² test. It is concluded that the fluid extract of Vimang® was effective to eliminate alveolitis in shorter period and without adverse reactions, reason why it was recommended to generalize its use.