Comparação da resistência imposta pelos filtros artificiais durante a ventilação mecânica

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Publicado: dez 20, 2007
Palavras-chave:
Respiração artificial, instrumentação

Conteúdo do artigo principal

Denise Cardoso Ribeiro
Curso de Fisioterapia das Faculdades Metropolitanas Unidas (FMU), São Paulo (SP)
Célia Regina Lopes
Curso de Fisioterapia do Centro Universitário do Triângulo (UniTRI), Uberlândia (MG)
Roberta Zancani de Lima
Curso de Fisioterapia das Faculdades Metropolitanas Unidas (FMU), São Paulo (SP)
Yara Cordeiro do Nascimento Teixeira
Curso de Fisioterapia das Faculdades Metropolitanas Unidas (FMU), São Paulo (SP)

Resumo

Introdução: Os filtros trocadores de calor e umidificadores (HMEs) higroscópicos, hidrofóbicos e mistos, que exercem as funções das vias aéreas superiores na ventilação mecânica, podem promover aumento da resistência no circuito aumentando o trabalho respiratório do paciente. O objetivo deste estudo foi comparar a resistência imposta entre os filtros higroscópico (Medsize) e misto (Gibeck) ao sistema respiratório artificial, durante a assistência ventilatória mecânica. Método: Os filtros da marca Medsize e Gibeck foram testados entre o intermediário Y e o balão de teste, sendo analisada a pressão antes (Pmax) e após cada filtro, com diferentes fluxos e quantidade de solução salina a 0,9%. Resultados: Observou-se resistência em ambos os filtros com aumento de no mínimo 1 cmH2O. O filtro da marca Gibeck apresentou maior resistência, 10 cmH2O, em relação ao filtro da marca Medsize, 5 cmH2O. Conclusão: Os filtros conectados ao circuito ventilatório artificial apresentaram aumento de resistência relacionado com o incremento de instilação de solução salina a 0,9% e com maiores valores de fluxo.

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Edição
v. 32 (2007): Suplemento 2
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Artigos

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