Conversation: The conversation between human and AI assistant.
[|Human|] My mother is eighty two years old and she had by pass heart surgery four years ago and she started to feel tired yesterday and weak and I m worried because this never happened to her before and is not like my mom to seelp during the day...Is this something to expect after the surgey?
[|AI|]  Hither are a number of causes that can cause weakness/fatigue following a major cardiac surgery which can include anemia (a lot of blood is lost during by pass surgery, in an 82-year-old person the body will need some time to recover that loss) infection, post by pass can Bertha as body cavity was exposed repeat Total and differential leukocyte counts. Medication side effects (most often beta blockers), and general post-operative fatigue from deconditioning in the hospital.  He fatigues and lassitude will go away once her body adjust to new medication and compensates for the blood loss as patient is old it will take some time thanks