What happens to cerebrovascular tone & blood flow in ischemic and non-ischemic regions of the brain when the pt is hyperventilated?

cerebrovascular tone in ischemic

a) increased
b) decreased
c) unchanged

cerebrovascular tone in non-ischemic

a) increased
b) decreased
c) unchanged

Blood flow in ischemic

a) increased
b) decreased
c) unchanged

Blood flow in non-ischemic

a) increased
b) decreased
c) unchanged