First of all, I really don't know what could be causing the numbness. I can't help you with the medical part of it. The problem that I am going to speak to is that he won't even go and see what the doctor has to say.
Maybe you and/or other family members can just talk with him about consulting the doctor, just to see what the doctor has to say. He can take the doctor's input under advisement, before he decides what to do. Medical care is not an all-or-nothing proposition. There may be some low-level kind of intervention that can be done to make him more comfortable and perhaps even extend his life, without his having to go through surgery or go on the cath table again.
I'm just speculating, but I think your father-in-law may feel that if he goes to the doctor, he will have all decisions taken out of his hands. Let him know you respect his option not to have any extraordinary measures, if that is how he feels. But if he is still on prescription medication, he will need to see the doctor sometime, just to get his prescriptions refilled. And maybe there is some kind of simple medication adjustment that can help.
I think the "loss of control" issue may be huge for him. My main feedback is to assure him that he is in control of his own medical decisions and that his loved ones will respect whatever he decides -- and you should mean it. Make a decision yourself that you will join with him and not with the doctors, if there is a conflict between what he wants and what they want. Let him know that you will back him up. Only then may he feel "safe" enough to seek medical help, because then whatever happens is still up to him.
It may be time to talk honestly with him about mortality issues and to let him know that you and the rest of the family will be okay after he is gone. I know that is a hard thing to talk about, but if he hears that and knows that you are sincere, then he knows for sure that you are not going to pressure him to live beyond his time of being comfortable and having good quality of life. And for him, I think being comfortable and having good quality of life means doing what he wants to do.
Good luck. He's a tough old codger, and his stubbornness has served him well so far. You can compliment him on that, and that is something else that might help him loosen up. You've got to find a way to invite him to let go of some of his control issues, at least a little bit, at least for now.
Thank you so much for your reply. You are 100 % correct when you mentioned about his thoughts with regards to why not seeking medical attention. He first of all refuses to open that topic even as a conversation. He admits that he is having the fear that anything might happen to him; however he won’t see his doctor because they might give him same old bad news regarding his heart which he is not prepared to deal with it anymore. He wishes not to know about his current heart's condition and never to go through anymore surgeries.
What so ever as a loved ones it is hard to see this at the same time we do respect his feelings a lot and perfectly understand his pain.
Well, I have anxieties similar to his, so I just suspected as much. It takes one to know one. I think that what would help me if I were in his situation would be to know that my loved ones were going to support me in whatever I wanted to do, including refusing intervention if I just did not feel I could go through it again. Under those circumstances, I might be willing to at least hear what the doctors had to say. But if I thought that my family and the doctors were going to gang up on me, I would dig in my heels. And I guess I can understand that a person could get to a point where they just did not even want to talk about it anymore.
Take my comments for what they're worth, take what's helpful, and leave the rest. I feel for you all. I can tell you love him very much. That comes through loud and clear. Thank you for sharing, because your concern is so sweet. I will say a prayer for him. Maybe that's all we can do.