Try to keep the person calm, secure, and comfortable. Make sure the person is dry (if he or she wears adult sanitary products) and is neither hungry nor thirsty. People with Alzheimer’s forget to eat and can’t always tell you what they need.
Keep to basic household routines. Ideally, sleep and meals happen in a predictable way every day.
Keep a written log of what was happening just before violent outbursts.
Prepare the person for triggers as best you can. Obviously you can’t preempt every upset—if a substitute care helper shows up, you still need the help of that person even if the new face is upsetting to the person with Alzheimer’s.