Síndrome de sobreposição asma e DPOC
Asthma-COPD overlap syndrome
Ataualpa Pereira dos Reis; Roberto Stirbulov
Resumo
Asma e doença pulmonar obstrutiva crônica (DPOC) são doenças crônicas altamente prevalentes na população geral. Ambas são caracterizadas por inflamação crônica heterogênea e obstrução das vias aéreas. Em ambas as condições, a inflamação crônica afeta todo o trato respiratório das grandes e pequenas vias aéreas, com recrutamento de diferentes células e com diferentes mediadores produzidos. A obstrução das vias aéreas é tipicamente intermitente e reversível na asma, mas é progressiva e frequentemente irreversível na DPOC. Quando asma e DPOC ocorrem juntas, o termo síndrome de sobreposição asma e DPOC tem sido usado. Realizou-se revisão de artigos originais, revisões e publicações indexadas nos bancos de dados PubMed, MEDLINE, LILACS e SciELO nos últimos 20 anos. Uma forma prática de diagnóstico da Síndrome de sobreposição asma e DPOC é incluir pacientes com diagnóstico de DPOC pelo critério do GOLD (Global Initiative for Chronic Obstructive Lung Disease) e da Asma pelo critério do GINA (Global Initiative for Asthma). Assim, a síndrome inclui pacientes que preenchem os critérios de DPOC (obstrução fixa das vias aéreas) e que também têm típicos achados de asma (sibilância, atopia, eosinofilia e resposta positiva a broncodilatador). A presença de diferentes fenótipos ou componentes das doenças aéreas obstrutivas crônicas necessita ser analisada para individualizar e otimizar o tratamento para se alcançar os melhores resultados. Embora intervenções específicas variem conforme a doença, o objetivo do tratamento para as doenças obstrutivas respiratórias é semelhante e dirigido primariamente para a necessidade de controlar os sintomas, otimizar a saúde geral, e prevenir exacerbações.
Palavras-chave
Abstract
Asthma and chronic obstructive pulmonary disease (COPD) are highly prevalent chronic diseases in the general population. Both conditions are characterized by heterogeneous chronic airway inflammation and airway obstruction. In both cases, chronic inflammation affects the whole respiratory tract, from central to peripheral airways, with different inflammatory cells recruited and different mediators produced. Airway obstruction is typically intermittent and reversible in asthma, but it is progressive and largely irreversible in COPD. When asthma and COPD co-occur, the term asthma-COPD overlap syndrome has been applied. This paper presents a review of original articles, reviews and other materials indexed in the PubMed, MEDLINE, LILACS, and SciELO databases and published over the last 20 years. A practical approach to diagnosis of the asthma-COPD overlap syndrome has been to include patients with a diagnosis of COPD according to GOLD criteria (Global Initiative for Chronic Obstructive Lung Disease) and of asthma according to GINA criteria (Global Initiative for Asthma). Therefore, the combined syndrome includes patients who meet criteria for COPD (fixed airflow obstruction) and also have typical features of asthma (wheezing, atopy, eosinophilia, and positive bronchodilator response). The presence of different phenotypes or components of obstructive airway diseases needs to be analyzed so that treatment can be individualized and optimized to achieve the best results for each patient. Even though specific interventions vary by disease, treatment goals for patients with obstructive airway diseases are similar and driven primarily by the need to control symptoms, optimize health status, and prevent exacerbations.
Keywords
References
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Submitted date:
04/17/2017
Accepted date:
05/03/2017
