Daniel here, with a short note to let you know that I'm back home and feeling pretty well. I am far from back to normal, if only because this is the kind of event that forces you to redefine "normal."
I am expected to recover fully, with the assistance of the finest pharmeceuticals insurance can buy. There is now a stent in place, and thanks to modern angioplastic techniques my recovery time will be measured in weeks, not months.
I'm very grateful for the well-wishes. I hope to post later with more details than anyone would ever want to know.