Pacemaker
Check your pulse when you are short of breath. If it is below 60 you may need one. Mine went down to 38 and that was scary. I feel much relieved now and still get a little short of breath, like this am when I carried groceries from the garage to the house in 90° high humidity but nothing like before.
Sorry about the tooth, I wouldn’t go for a transplant though from what I have heard about them. Good Luck.