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Vol. 22. Issue 1.
Pages 13-16 (January - February 1986)
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Vol. 22. Issue 1.
Pages 13-16 (January - February 1986)
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Compresion mecanica abdominal y respuesta del impulso respiratorio en sujetos normales
Mechanical abdominal compression and respiratory impulse response in healthy individuals
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J.M.a Marin Trigo, J.A. Pasamar Bonilla, A. Dupla Abadal
Departamento de Fisiopatología. Hospital de Enfermedades del Tórax. Zaragoza
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Se han estudiado 11 sujetos sanos (x¯: 30 años), antes y después de colocarles una cincha abdominal de 10cm de ancha que provocó elevaciones signficativas del diafragma. Se estudiaron los cambios de volúmenes, ciclo respiratorio y presión de oclusión (P.1). Los resultados más significativos fueron la reducción del ERV (volumen de reserva espiratorio) en un 27% (p<0,005) y un aumento de la P.1 en un 32% (p<0,025) y de la IIE (impedancia inspiratoria efectiva) en un 34% (p<0,05). El resto de los parámetros espirográficos o del ciclo respiratorio no se modificaron. Uno de los sujetos mostró una respuesta discordante.

Se concluye que la P.1 y la IIE son los parámetros más sensibles a la hora de identificar los cambios del impulso neuromuscular secundario a la sobrecarga abdominal y además podrían identificar sujetos normales «no luchadores» y con un presumible riesgo de desarrollar hipoventilación alveolar en el futuro.

Eleven healthy individuals (x¯ 30 years) studied before and after wearing a 10cm abdominal girdle which significantly elevated the diaphragm. Changes were studied in volume, respiratory cycle and occlusion pressure (P1). The more significant findings included a reduction in expiratory reserve volume (ERV) in 27% (p<0.005) and an increase in P1 in 32% (p<0.025) and effective inspiralory impedance (ERI) in 34% (p<0.05). The remainder of the spyrographic or respiratory cycly parameters did not show changes. One of the subjects presented an anomalous response. It is concluded that P1 and ERI are the parameters most sensitive to changes in the neuromuscular impulse due to abdominal overstraining and will identify healthy «effortless» individuals presumably at risk for future alveolar hypoventilation.

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Copyright © 1986. Sociedad Española de Neumología y Cirugía Torácica
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