CR-209. RESPIRATORY DEAD SPACE: MAN (Continued) 

 Part 11: DURING ACTIVITY 



Values in parentheses conform to estimate 

 Vt = tidal volume 



'c" of the 95% range (cf Introduction). Vq = volume of dead space gas, 



Anatomic 



/I/ Alveolar CO^ tension method (Haldane- Priestley) 



of expiratory gas, CO^ analysis. 



Contributors : (a) Rossier, P. H., (b) Severinghaus, J. W. 



References : [ l] Siebeck, R., Scand. Arch. Physiol. 25:81 , 1911. [2] 



47:30, 1913-1914. [3] Fowler, W. S., Am. J. Physiol. 154:405. 1948. 



and Whitney, J. L., ibid 38: 1 , 1915. [5] Douglas, C. G., and Haldane, 



[6] Asmussen, E., and Nielsen, M., Acta physiol. scand. 38:1, 1956. 



/2/ Arterial COj tension method. HI Fractional sampling 



Krogh, A., and Lindhard, K., J. Physiol. 



[4] Henderson, Y., Chillingworth. F. P., 



J. S., J. Physiol. 45:235, 1912. 



[7) Rossier, P. H., and Buhlmann, A., 

 unpublished. [8] Houston, C. S., and Riley, R. L., Am. J.^hysiol. 149:565, 1947. [9] Aitken. R. S., and 

 Clark- Kennedy, A. E.. J. Physiol. 65:389, 1928. [ 10] Bannister, R. G., Cunningham, D. J., and Douglas, C. G., 

 ibid 2i5:90, 1954. [ll] Riley, R. L., Shepard, R. H., Cohn, J. E., Carroll, D. G., and Armstrong, B. W., J. 

 Appl. Physiol. 6:673, 1954. ( 12] Filley, G. F., Gregoire, F., and Wright, G. W., J. Clin. Invest. 23:517, 1954. 



Part 111: DURING CO2 HYPERPNEA 

 Male subjects at rest. Except where otherwise indicated, measurements are for alveolar CO2 tension by Haldane- 

 Priestley method. Vq = volume of dead space gas, Vt - tidal volume. 



HI Arterial CO2 tension method. /2/ Foreign gas method (hydrogen). 



Contributors : (a) Rossier, P. H., (b) Severinghaus, J. W. 



References : [ l] Campbell, J. M., Douglas, C. G., and Hobson, F. G., J. Physiol. 48:303, 1914. [2] Bannister, R. G. 



Cunningham, D. J., and Douglas, C. G., ibid ^^: 90, 1954. [3] Cooper, D. Y., Emrael, G. L., Kough, R. H., and 



Lambertsen, C. J., Fed. Proc. 12:28, 1953. [4] Siebeck, R., Scand. Arch. Physiol. 25:31, 1911. 



47 



