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WILLIAM SHAPIRO, MD; ALBERT J. WASSERMAN, MD; JOHN L. PATTERSON, JR., MD

Arch Neurol. 1965;13(2):130-138.

	Since this article does not have an abstract, we have provided the first 150 words of the full text PDF and any section headings.

THE OCCURRENCE of cerebral vasodilatation and vasoconstriction in response to elevation and depression of blood carbon dioxide tension has been well established.^1-4 The time required for achievement of the full cerebral vasodilator response to carbon dioxide inhalation remains unknown because of methodological limitations. In 1933, Gibbs⁵ described a thermoelectric device designed to follow continuously changes in blood flow in the jugular bulb, and by 1935, Gibbs and associates⁶ reported the instantaneous effects of alterations in blood gases on flow as detected by this probe. These results have been considered qualitative by these authors⁷ and others⁸ because of lack of in vivo calibration and other technical problems. The subsequent development of the nitrous oxide method by Kety and Schmidt⁹ allowed the first quantitative measurements of human cerebral blood flow (CBF). Since this method requires 10-14 minutes for a single flow determination, it cannot . . . [Full Text PDF of this Article]

Author Affiliations
RICHMOND, VA

Presented in part before the Seventh Interamerican Congress of Cardiology, Montreal, Canada, June, 1964.; From the Department of Medicine, Medical College of Virginia. Assistant professor of Medicine (Dr. Shapiro); Associate professor of Medicine (Dr. Wassermann); and Research professor of Medicine Career Investigator, National Heart Institute (Dr. Patterson).

Footnotes
Submitted for publication March 11, 1965; accepted March 27.

Reprint requests to Department of Medicine, University of Texas, Southwestern Medical School, 5323 Harry Hines Blvd, Dallas 75235 (Dr. Shapiro).

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