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Vol. 31. Issue 10.
Pages 501-506 (December 1995)
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Vol. 31. Issue 10.
Pages 501-506 (December 1995)
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Estudio fonográfico de las sibilancias espiratorias en el asmático
Phonographic study of expiratory wheezing in asthma
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A. Bueso, R. Irigaray
P.V. Romero*,1
* Sección de Fisiopatología Respiratoria. Servicio de Neumología. Hospital Princeps d’Espanya. Ciudad Sanitaria y Universitaria de Bellvitge. L’Hospitalet de Llobregat. Barcelona
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El análisis cuantitativo de las sibilancias espiratorias en el asmático puede abrir una vía en el estudio funcional de estos pacientes.

Método

Se ha analizado el espectro de sonido espiratorio en 9 asmáticos con sibilancias y en 5 sujetos normales, correlacionando los parámetros fonográficos con los espirométricos en respiración basal y honda.

Resultados

a) Las sibilancias espiratorias se manifiestan en una banda de 210 a 280 Hz en respiración honda, y b) la potencia en esta banda se correlaciona positivamente con el flujo medio espiratorio (VT/TE) e inversamente con la pendiente de la curva volumen/flujo entre el 50 y 25% de la FYC.

Conclusiones

El grado de limitación al flujo aéreo en vías periféricas se correlaciona con la potencia del sonido pulmonar.

Palabras clave:
Sibilancias
Fonograma
Espirometría

The quantitative analysis of expiratory wheezing may offer a new approach for study respiratory function in asthmatics.

Method

The sound spectrum during expiration was analyzed in 9 asthmatics with wheezing and 5 normal subjects. Phonographic parameters were then correlated with spirometric results for baseline respiration and deep breathing.

Results

a) Expiratory wheezing is heard in a band of 210 to 280 Hz during deep breathing, and b) the volume in this band correlates positively with mean expiratory flow (VT/TE) and negatively with the slope of the volume/flow curve between 50 and 25% of FVC.

Conclusions

The degree of air flow limitation in the peripheral airways correlates with the volume of pulmonary sound.

Key words:
Wheezing
Phonography
Spirometry
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Copyright © 1995. Sociedad Española de Neumología y Cirugía Torácica
Archivos de Bronconeumología
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