Sorry.
It was pointed out that I didn’t give a Dad Update here. My apologies.
The good news is that he doesn’t require surgery.
The bad news is that of the three arteries to his heart, only two are open.
The other good news is that it looks like it has been that way for decades, and the other two arteries are now larger and have compensated by growing tendrils to carry blood to the places serviced by the now clogged artery. Amazing, huh?
Dad’s just going to have to watch his salt and cholesterol, avoiding hypertension and high blood pressure. This he can do with medication, diet and exercise.
Thanks for your concern- it amazes me.
G