155. CEREBRAL BLOOD FLOW, O2 CONSUMPTION, AND VASCULAR RESISTANCE: MAN, CAT. MONKEY 



Values determined in vivo for unanesthetized animal, unless otherwise indicated. Values in parentheses are ranges 

 and, unless otherwise specified, conform to estimate "c" of the 95% range (cf Introduction). Note that 100 x Column 

 E -i- Column C = brain arterio- venous O^ difference, the quantity of O^ removed by the brain from each 100 ml of 

 blood flowing through it. 



/I/ Nitrous oxide method. /2/ Normal young men. /3/ Approximately same values and ranges (except for 

 narrower ranges of blood flow) found in persons with essential hypertension [ l], and in schizophrenics [ 2]. 

 /4/ Active reflexes, spontaneous movements. /5/ Light anesthesia. /6/ Measured by intercalated bubble flow 

 meter. 



Contributor : Kety, S. S. 



References : [ l] Kety, S. S., et al, J. Clin. Invest. 27:511. 1948. [2] Kety, S. S., et al. Am. J. Psychiat. 

 204:765, 1948. [3) Kety, S. S., and Schmidt, C. F., J. Clin. Invest. 27:476, 1948. [4] Sokaloff, L., and 

 Mangold, R., unpublished. [5] Kety, S. S., and Schmidt, C. F., J. Clin. Invest. 27:484, 1948. [6] Freyhan, 

 F. A., et al, J. Nerv. Ment. Dis. l_nA'i9, 1951. [7] Wechsler, R. L., et al. Anesthesiology ^2:308, 1951. 

 [8] Geiger, A., and Magnes, J., Am. J. Physiol. M9:517, 1947. [9] Schmidt, C. F., et al, ibid L43:33, 1945. 



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