My husband who is in the 5-6 stage of Alzheimers is determined to do things that can hurt him. He is fixated on things like lawnmowers, weedeaters and electric saws. He also has COPD and in on oxygen most of the time. He is able to get out of house and is constantly trying to operate the equipment he used when he was well. He gets so angry when I try to stop him. Yes, I've tried to divert his attention to something else and it does not work. I am so stressed all the time. I know this is not good for me and I fear for my health as well. He is 83 and I am 72. Any advise would be appreciated.