Brain blood flow and cerebral metabolism during ataralgesia

: The effect of ataralgesia (diazepam and fentanyl anesthesia) on cerebral blood flow and metabolism has been studied in 9 patients with arterial aneurysms of cerebral vessels. The decrease of cerebral blood flow under anesthesia was observed in 8 out of 9 patients. The brain metabolism reaction varied showing a decrease in 6 patients and an increase in 3 patients.