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January 1931


Arch NeurPsych. 1931;25(1):128-136. doi:10.1001/archneurpsyc.1931.02230010140007

Encephalography as a diagnostic procedure is well recognized in most neurologic clinics. It has also been suggested and frequently used as a therapeutic measure. There have been two profound objections to such use. The first objection is. the severe reaction that the patient experiences during and after the injection of air. This is frequently characterized by severe headache, nausea and vomiting, often projectile in character, marked diaphoresis and occasionally collapse. Second, it has been considered dangerous in patients who show much increase in intracranial pressure, especially in the presence of choked disks, tumors of the brain and particularly lesions of the posterior fossa.

Any procedure that will minimize this reaction is of value in the welfare of the patient as well as in facilitating the examination. It has been noted that to some extent the distress of the patient is in proportion to the amount of movement to which he