I am currently a 2nd year nursing student and on during my clinical last week I had a patient with admitting diagnosis of middle cerebral aneurysm and he is on pentaspan (plasma volume expander). I took his VS and his BP was a bit high which was 150/90, so i talked to my nurse about this because i was concern. My nurse told me that the BP is ok because maintaing a higher than normal BP is good after a craniotomy. is this right and what is the rational behind it. I was thinking and i came up with , increased cerebral perfusion so maintainig a higher than normal bp is recommended after a crani. Pls help. I asked my nurse but i forgot what she said.