I am his caretaker and I am with him a lot. I have always been very close to him. Our older brother, who is much more financially blessed, is his medical POA. From research, I believe that his POA comes into play when the person who is disabled is not able to make a medical decision. However, he is able to make decisions at this point pretty well. My older brother is a very controlling person. He tries to control everything, and it gets annoying. It stresses both me and my disabled brother. I can't change him, but who could explain to him that his definition of POA is not exactly what he thinks? He is just being ridiculous! Am I correct in the medical decision making?