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Vol. 18. Issue 4.
Pages 200-205 (July - August 1982)
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Vol. 18. Issue 4.
Pages 200-205 (July - August 1982)
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Intercambios gaseosos en la asbestosis pulmonar
Alterations in gas exchange in asbestosis
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V. Sobradillo Peña, J.I. Villate Navarro, M. Lasso Manzano, A. Diaz Pedreira
Sección de Respiratorio. Ciudad Sanitaria de la Seguridad Social «Enrique Sotomayor». Bilbao
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Resumen

Se presenta el estudio de los intercambios gaseosos, en reposo y al ejercicio en 14 pacientes con asbestosis pulmonar. La alteración de los intercambios gaseosos está en relación con la gravedad de la afectación radiológica. Los pacientes con alteraciones radiológicas más importantes presentan en reposo una hiperventilación con disminución de la eficacia respiratoria. La insuficiencia respiratoria en reposo no es frecuente. El ejercicio hace aparecer con más claridad las alteraciones de los intercambios gaseosos. La hiperventilación, el aumento del gradiente alveoloarterial de 02 y la desaturación al ejercicio, se observan en ocho de los nueve pacientes radiológicamente más afectados. Se discuten las causas fisiopatológicas que pueden explicar estos hechos.

Summary

The results of a study measuring gas exchange functions at rest and during exercise in a group of 14 patients with asbestosis are presented. The alterations in gas exchange function were related to the degree of affectation seen on x-ray. The patients in whom the x-ray showed the severest alterations also presented hyperventilation and impaired respiratory capacity while at rest. Respiratory insufficiency while at rest was but infraquently seen. The alterations in gas exchange function can be determined most obviously during exercise. Hyperventilation, increased alveolararterial gradients of O2 and desaturation during exercise were seen in 8 out of the 9 patients with severe radiological alterations. A discussion of the possible physiological causes for these findings is inclüded.

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Copyright © 1982. Sociedad Española de Neumología y Cirugía Torácica
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