Article information
RESUMO
Estudamos o controle da respiração com a finalidade primordial de avaliar a dispneia. A presente abordagem deve ser feita a vários niveis, uma vez que o centro respiratório pode estar integro mas os efectores a nivel dos circuitos neuronais podan eocontrar-se comprometidos. Utilizamos um estímulo hipercápnico para o centro respiratorio e medimos a resposta venrilatoria, a pressão de oclusão e escalas analógicas visuais. Tambem avaliamos as pressões respiratorias maximas e os movimentos toraco-abdominais utilizando plerismografia por variação de inductancia. Com esta metodologia somos capazes de localizar qual o efector responsável pela dispneia e avaliar a integridade do centro respiratório em doentes com patologia cardiac ou respiratória.
REV PORT PNEUMOL 1999; V (2): 237-246
Palavras-chave:
Pressão de oclusão
Estimulacão da respirayao com CO2
Plensmografia por variação de inductancia
Pressões respiratórias maximas
Escalas analógicas visuais
ABSTRACT
We evaluate the control of breathing mainly to assess dyspnea. This assessment must be done at several levels, once the respiratory center could be intact but the effectors of the neural drive could be damaged. We use an hypercapnic stimulus to the respiratory center and measure the ventilatory response, the occlusion pressure and visual analogue scales. We also evaluate the maximal repiratory pressures and the thoraco-abdominal movements using the respiratory induced plethysmoaraphy. With this methodology we are able to locate what is the effector that could be responsible for dyspnea and assess the intearity of the respiratory center in patients with cardiac or respiratory pathology.
REV PORT PN EUMOL 1999; V (2): 237-246
Key-words:
Occlusion pressure
Stimulation of breathing with CO2
Respiratory induced plethysmography
Maximal respiratory pressures
Visual analogue scales
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