Modalità del respiro nell'uomo sottoposto a carichi elastici inspiratori
Agostoni, Emilio ; D'Angelo, Edgardo ; Piolini, Marco
Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti, Tome 62 (1977), p. 454-457 / Harvested from Biblioteca Digitale Italiana di Matematica
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The breathing pattern was studied in man during inspiratory elastic load applied throughout the breathing cycle (CL) or inspiration only (DL). VT decreased similarly under both loads — 40% during the 1st loaded breath (1st), 25% after 1 min (min) — as did Ti (15% at 1st, 25% at min); Te decreased by 35% under CL, 25% under DL, at both times. Under DL expiratory flow started after a lag of 0.4 sec, required to raise alveolar pressure above atmospheric pressure. In all subjects the inspiratory drive was increased at 1st and in 6 out of 8 the ventilatory response at min was essentially neurogenic. The rate of decrease of inspiratory muscle pressure during the period of zero flow under DL was proportional to end-inspiratory muscle pressure (Pmus{e.i.}) and to Pmus{e.i.}/Ti. At the beginning of expiration dPmus/dt was greater under DL: in this period the difference of Pmus between CL and DL seems mainly due to intrinsic muscle properties.

Publié le : 1977-11-01
@article{RLINA_1977_8_63_5_454_0,
     author = {Emilio Agostoni and Edgardo D'Angelo and Marco Piolini},
     title = {Modalit\`a del respiro nell'uomo sottoposto a carichi elastici inspiratori},
     journal = {Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti},
     volume = {62},
     year = {1977},
     pages = {454-457},
     language = {it},
     url = {http://dml.mathdoc.fr/item/RLINA_1977_8_63_5_454_0}
}

Agostoni, Emilio; D'Angelo, Edgardo; Piolini, Marco. Modalità del respiro nell'uomo sottoposto a carichi elastici inspiratori. Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti, Tome 62 (1977) pp. 454-457. http://gdmltest.u-ga.fr/item/RLINA_1977_8_63_5_454_0/

Bland, S., Lazerou, L., Dyck, G. e Cherniak, R. M. (1967) - The influence of the “chest wall” on respiratory rate and depth, «Respir. Physiol.», 3, 47-54.

Campbell, E. J. M., Dinnick, D. T. e Howell, J. B. L. (1961) - The immediate effects of elastic loads on the breathing of man, «J. Physiol. (London)», 156, 260-273.

Margaria, C. E., Iscoe, S., Pengelly, L. D., Couture, J., Don, H. e Milic-Emili, J. (1973) - Immediate ventilatory response to elastic loads and positive pressure in man, «Respir. Physiol.», 18, 347-369.

Petit, J. M., Milic-Emili, J. and Delhez, L. (1960) - Role of the diaphragm in breathing in conscious normal man: an electromyographic study, «J. Appl. Physiol.», 15, 1101-1106.

Pope, H., Hollaway, R. e Campbell, E. J. M. (1968) - The effect of elastic and resistive loading of inspiration on the breathing of conscious man, «Respir. Physiol.», 4, 363-372.

Swanson, G. D., Ward, D. S. e Bellville, J. W. (1976) - Posthyper-ventilation isocapnic hyperpnea, «J. Appl. Physiol.», 40, 592-596.