The cardiologist knew, of course, what I didn't know - that the angina I had experienced on the treadmill was a life threatening aspect of blockage of the arteries in my heart. He continued to talk while I continued to blur. He assured me that the beta-blockers and nitroglycerin he was prescribing would, as he put it, "make sure I got through the weekend without an incident". After not worrying for months, I now had to fret the weekend? Blur.