Euro, I'm also glad to know your father's out of danger. I hope those doctors find out the cause of his ailments.
I had a scare like that a few years ago myself when my father had a mild heart attack , but luckily he recovered from it. He's turning 70 years old this year, and he's still fairly active -- he continues to restore old rifles* as a hobby and has a shop outside of the town he lives in to work on them, and he was remarried a few years back with what seems to be a good marriage -- so I'm hoping his good health continues along with that.
*Yeah, my father's very much a gun-nut. He just loves guns. In Canada, no less. Kinda ironic.