Avaliação dos parâmetros espirométricos de pacientes submetiods à broncoscopia flexível com anestesia local

Introducao: A broncoscopia flexivel (BF) e um exame diagnostico e de potencial terapeutico usado com frequencia nos servicos de cirurgia toracica. O desconhecimento sobre o verdadeiro impacto na funcao pulmonar e as possiveis complicacoes ainda restringemsua aplicacao a instituicoes de maior complexidade. O objetivo deste estudo consiste em avaliar as alteracoes nos espirometricos apos a realizacao de BF com anestesia local. Identifi-car a seguranca do metodo era o objetivo do trabalho. Metodos: Estudo longitudinal prospectivo para o qual foram selecionados pacientes com indicacao de BF em um Hospital Universitario. A avaliacao dos pacientes se deteve na realizacao de oximetria de pulso e exame espirometrico antes e apos a realizacao da BF. A espirometria foi realizada por profissional treinado e de acordo com as recomendacoes da Sociedade Brasileira de Pneumologia e Tisiologia. A incidencia de complicacoes tambem foi avaliada. Resultados: A amostra foi formada por 20 pacientes sendo a maioria masculino (55%). A media de idade foi de 56,6 anos, 35% dos pacientes eram fumantes (media de 45,3 anos/maco), 10% asmaticos e 15% tinham DPOC. Houve reducao estatisticamente significativa no VEF1, CVF e PEF de respectivamente 0,25 L, 0,44L e 0,85 L/Seg. O Indice de Tiffenaud manteve o padrao, sem diferenca significativa. Houve queda significativa tambem na SpO2 Nao houve necessidade de suporte ventilatorio. Conclusao: Houve uma significativa reducao da funcao pulmonar e da saturacao da hemoglobina apos a realizacao da BF. Contudo, estas alteracoes nao determinaram um impacto clinico significativo, demonstrando a seguranca do metodo. (AU) Introduction: Flexible bronchoscopy (FB) is a diagnostic test of therapeutic potential often used in thoracic surgery services. Lack of knowledge about its true impact on lung function and possible complications still restrict its use in institutions of higher complexity. The aim of this study is to evaluate the changes in spirometry after conducting FB with local anesthesia and determine the safety of the method. Methods: A longitudinal prospective study of patients referred to FB in a university Hospital. The evaluation of patients focused on performing pulse oximetry and spirometry before and after completion of FB. Spirometry was performed by trained professional and in accordance with the recommendations of the Sociedade Brasileira de Pneumologia e Tisiologia (Brazilian Thoracic Association). The incidence of complications was also evaluated. Results: The sample consisted of 20 patients, most of whom males (55%). The mean age was 56.6 years, and 35% of the patients were smokers (mean 45.3 years/pack), 10% had asthma, and 15% had chronic obstructive pulmonary disease (COPD). There was a statistically signifi cant reduction in FEV1, FVC and PEF (respectively, 0.25 L, 0.44 L and 0.85 L/sec). The Tiffenaud Index remained at the standard level, with no signifi cant difference. There was also a signifi cant decrease in SpO2. There was no need for ventilatory support. Conclusion: There was a signifi cant reduction in lung function and hemoglobin saturation after completion of FB. However, these changes did not have a signifi cant clinical impact, confi rming the safety of the method. (AU)