Anesthesia and memory loss

 I noticed this article in TheScientist Magazine today.  Anesthesia Impairs Memory in Mice | The Scientist Magazine® (the-scientist.com)  It is reporting on the original published work,  Anesthetics fragment hippocampal network activity, alter spine dynamics, and affect memory consolidation (plos.org)  For some time, I've been concerned about memory changes after anesthesia, but haven't been able to find anything about it except discussions of "brain fog" and short term memory loss that clears after a day or so. I recently cancelled an appointment for a colonoscopy, a procedure I consider important, because I was told that after 80 and even deeper sedation is used.  I had requested lighter or minimal because I never seem to fully recover and experience what I would call long term effects--like forever.  This research says the effects it might be otherwise: “The results challenge a very fundamental notion that I think the public—and many investigators even—assume. And that is, once the drugs have been eliminated from the body, the brain goes back to baseline state. And that’s not the case.”