RELATIONSHIP OF PHYSIOLOGY TO PROGRESS IN THE TREATMENT OF INTRACRANIAL COMPLICATIONS
Any progress that has been made in the diagnosis and treatment of suppurative diseases of the brain during the last few years has been the result of an application of recognized normal physiologic relationships of the cerebrospinal fluid system with the hemic and respiratory systems.
It has long been known that obstruction to the venous return from the head produces an elevation of the intracranial pressure, but it is only recently that manometric variations (in induced venous congestion of the head by pressure on the jugular veins and carotid artery) have been utilized for the diagnosis of obstructive lateral sinus thrombosis.1
From time immemorial it has been known that magnesium sulphate given by mouth has relieved certain types of headache, but Weed and Foley2 have demonstrated that the bulk of the brain is actually reduced after the