My point was that the ops heart attack was 5 years ago and everything has been fine until recently. What has changed in the last 4 years to cause it? because I doubt if its his heart. One suggestion is, when he is relaxed, talk to him and remind him that getting stressed will be a short cut to death. He has already lost a part of his heart and stress is a killer.
They are talking so much about former football (American) and now also hockey players were the symptoms of brain injuries appear only years later, after their playing days are over, and that can only be corroborated by autopsies - who is to say that injuries due to oxygen starvation aren't similar to that?
True after I passed out & injured my brain, my personality has changed some I am a bit more angry at times than I should be & my taste in things like colors have changed to colors I hated before. It's very strange how the brain reacts to any kind of injury be it lack of oxygen which I have had often happen when my heart stops & the falling when passing out causing injury to my head every time.
After a major heart attack people need to recover physically as well as emotionally and this can take quite some time.
Only few people say their heart attack has not affected them too much emotionally.
Most people will in months-years learn to accept what had happened to them, and they made a conscious effort to put it behind them and to move forward.
A few still struggle to cope with their emotions several years after their heart attack.
Those emotions often are anger, frustration, irritability and short temperedness and depression.
I think 5 years is a long time and chances are slim that things will change soon.
f it affects his and your life so much, perhaps you should talk about it with a phychiatrist.
I think, there is more to this than is implied in ed34's question. Oxygen starvation of the brain even if only for a short time can affect personality changes over time.
Has he ever truly faced what has happened to him? Maybe he needs a release such as talking about it again?