50. RESPIRATORY DEAD SPACE AND TIDAL VOLUME: MAN 



Resting subjects. Vq = volume of dead space gas in ml. V-p = tidal volume in ml. For definitions and clarifying 

 information on various dead space concepts, see Page 46. 



Contributors : (a) Rossier, P. H., (b) Fishraan, A. P.. (c) Kaltreider, N. L., (d) Severinghaus, J. W. 

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

 Scand. Arch. Physiol. 63:15, 1931. [ 3] Hurtado, A., Fray, W, W., Kaltreider, N. L., and Brooks, W. D., J. Clin. 

 Invest. n:169, 1934. [4] Kaltreider, N. L. , Fray, W. W. , and Hyde, H. van Z., Am. Rev. Tuberc. 37:662, 1938. 

 [5] Enghoff, H., Upsala lak. foren. forh. 44:191 , 1938. [6] Birath, G., Acta med. scand. suppl., 154, 1944. 

 [7] Riley, R. L., and Cournand, A., J. Appl. Physiol. J^: 82 5, 1949. [8] Bateman, J. B., ibid 3:143, 1950. 

 [9] De Coster, A., and Denolin, H., Acta clin. belg. 9:135, 1954. [10] Bartels, H., Beer, R., Koepchen, H. P., 

 Wenner, J., and Witt, 1., Pfliigers Arch. 261 :133, 1955. [ U] Rossier, P. H., and Buhlmann, A., unpublished. 



51. RESPIRATORY DEAD SPACE AND TIDAL VOLUME: DOG 



Male subjects. Vd = volume of dead space gas. For definitions and clarifying information on various dead space 

 concepts, see Page 46. 



500 



6 400 



•3 300 

 > 



H 200 



100 



J I L. 



_i L 



X= physiologic dead space 

 • = anatomic dead space 



J I i 1 I I I I L. 



40 bO 80 100 120 140 160 180 200 



Dead Space, ml 



Contributor : Severinghaus, J. W. 



Reference: Severinghaus, J. W., and Stupfel. M., J. Appl. Physiol. J^: 3 35, 1957, 



50 



