For me and others(in my circle with operations, 5) the waking up part is multiple hours of a drugged feeling, like you really aren't on the same planet anymore.
Currently have a family member in hospital and 4 days later they are still dealing with the effects.
I assume this is probably a regional/country issue, australian public hospitals are pretty sub-standard.
I mean, maybe what do you think about 4 weeks later? If I'm being put under I think more than 4 days is reasonable to expect my mind to recover. If I have a terrible flu I could be in a fog for as few.
However this is not to diminish your report specifically, just that in terms of what I care about long-term it is the >2 weeks effects