  39 y/o RHF complained of a severe HA at 2AM 11/4/92. It was unclear whether she had been having HA prior to this. She took an unknown analgesic, then vomited, then lay down in bed with her husband. When her husband awoke at 8AM he found her unresponsive with "stiff straight arms" and a "strange breathing pattern." A Brain CT scan revealed a large intracranial mass. She was intubated and hyperventilated to ABG (7.43/36/398). Other local lab values included: WBC 9.8, RBC 3.74, Hgb 13.8, Hct 40.7, Cr 0.5, BUN 8.5, Glucose 187, Na 140, K 4.0, Cl 107. She was given Mannitol 1gm/kg IV load, DPH 20mg/kg IV load, and transferred by helicopter to UIHC.