Abstract
COMPLICATIONS of cerebral arteriography may be related to the injection of radiopaque contrast medium or to the mechanics of placing a needle or catheter in the arterial system.1 , 2 The injection of contrast medium may produce alterations in cardiac output, heart rate, blood pressure, vasomotor regulation, clumping and agglutination of red cells, changes in blood flow and disturbances in enzyme function.2 , 3 Treatment of such complications has been discussed in several recent articles.4 5 6 Very often it is difficult to determine whether or not patients are benefited by a particular mode of therapy in these reports.In 1951 Denny-Brown7 reported that the most . . .