[Changes in total hemodynamics of central genesis following removal of basal meningiomas].

The removal of basal intracranial meningiomas in 54 patients, even under general anesthesia with neuro-autonomous blocking, was accompanied by cardiovascular reactions caused by both reflex effects and direct excitation of brain stem structures. These reactions were always of a pressor nature only. Postoperatively, the vascular reactions were also of a pressor nature and presented themselves as components of either a non-specific stress response or a developing diencephalo-catabolic syndrome.