dr. weirman. you mentioned that you look at delirium, as well.m wondering if there is research that shows that delirium in older people after surgery where a general anesthetic has been involved, which i have seen cases of, can be a trigger. i see dr. hodes nodding also. is there a link, can that be a trigger of alzheimer's? is there a link between the delirium that you sometimes see in older people after an operation that iolves a general anesthetic and dementias? >> between pointgood point s. and the first is that delirium succeeded comignitive function d the answer appears to be yet. so often for general apanesthes apanesthesia. so there can be a short term decline. most people recover fine, but the failure to recover relatively quickly is also predictive of long term decline. so both of these insults, whatever exactly that means, to the brain as a result of deep general anesthesia or delirium do seem to be capable of accelerating the functional decline. >> dr. petersen. >> i agree with dr. hodes. it also pertains to the issue o reserve. if th