WE HAVE selected 143 cases from the records of the Montreal Neurological Institute for analysis of the relation of spontaneous subarachnoid hemorrhage,1 intracerebral hemorrhage, and intracranial aneurysm. These cases cover a period of 10 years, from 1938 to 1948.
The criteria for selection were as follows:
The condition had to be proved by lumbar puncture, arteriogram, operation, or autopsy.
Onset of hemorrhage must have occurred within four days prior to admission.
Traumatic cases were excluded.
The material is classified as follows:
The data are discussed under three headings: (1) general systemic and local meningeal reactions to blood in the subarachnoid space; (2) statistical considerations and points of interest in the three conditions (subarachnoid hemorrhage, intracerebral hemorrhage, and intracranial aneurysms); (3) treatment.
GENERAL SYSTEMIC AND LOCAL MENINGEAL REACTIONS
General Systemic Reactions.
—The presence of fever and polymorphonuclear leucocytosis of the blood is almost the rule. Patients have sometimes been admitted