Angioplasty doubt. Is this allowed?

Can someone please tell me if Angioplasty can be done by any doctor or hospital without any consent? A nearby hospital admitted my father who was having chest pain for more than 4 hours, they took him to emergency ward, and without our consent and understanding they did Angioplasty on him. Later we just had one doubt, when my father can survive 4 hours, he could have survived another 5 mins without the process, but at-least we could have been informed. Nobody informed us that he is having a heart attack and he is going to get a angioplasty process done. They just informed us that he is taken for Angiogram. Doctor never visits us and will discuss anything as if he is trying to hide something. We are taking him out to a better hospital and doctor for a second round of treatment. Can someone suggest if the first doctor whatever he did was correct or not? Also, he has no empathy towards family and keeps on saying patient will not survive for long, is this allowed?