Perhaps I should have said "suggested" blockages. The stress test suggested the presence of blockages. I am grateful beyond expression to tell you that the stress test was wrong.
Beloved was wheeled out of the holding area at 11:35. At 12:25 her cardiologist was explaining to me and to one of her best friends that she does not, in fact, have any blockages. What she has is an artery that goes into spasm. There's an article all about it here.
The attitude of the doctor when he was talking to us was "No biggie." He was very pleased that there are no blockages, and felt that it could be easily treated with medication. I see by my further reading that it is not exactly "nothing to be concerned about." It can still starve the heart of oxygen and cause muscle death (i.e., heart attack). But... this is still a better diagnosis, it seems to me.
Anyway, Beloved and I are greatly relieved, and happy, and... relieved.
Thank you for your prayers. This community lifts me up.