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Last week there was a posting where someone mentioned that personality change in her husband had been attributed to the "Anesthesia" by the doctors taking care of him after his heart surgery. Shame on them - those of us with experience in this area knows that the most common and frustrating post operative complication after heart surgery is neurological dysfunction of varying degrees. It is most likely due to microemboli to the cerebral circulation. There is absolutely no valid scientific evidence establishing "Anesthesia" as the proximate cause of postoperative mental changes. To give these physicians the benefit of the doubt, I will assume that their error was made out of understandable ignorance/inexperience rather than out of a desire to shift "blame" to other physicians or therapeutic maneuvers. If they know of such evidence, I would appreciate seeing the peer reviewed literature and would like an opportunity to comment. Until then, let us feel compassion for those afflicted with this frustrating disability and work towards finding not only a cause but a solution. Ken Janis, MD (Parkinsons patient) Associate Professor of Anesthesiology University of New Mexico