Medical hypotheses
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The molecular mechanisms of postoperative delirium are not understood in detail yet. This condition is similar to cases of mental symptoms in interferon therapy or hemodialysis. ⋯ Our hypothesis may be applicable to the mechanisms of mental symptoms in interferon therapy and hemodialysis. In addition, we discuss to the relationship between homeostasis and biorhythms because postoperative delirium may be a dysrhythmia.