Effect of Increased Jugular Pressure on Cerebral Hemodynamics

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Abstract
The effect of ob-structing the venous outflow of blood from the brain was studied in 7 patients. This was accomplished by the use of a tourniquet applied around the neck and the pressure increased until the pressure in the jugular bulb had increased to 124-300 mm of water. Cerebral blood flow was determined by the nitrous oxide method. Increased venous pressure did not alter cerebral blood flow, although cerebral O2 consumption seemed to be increased somewhat.