Dad just met with a cardiac/amyloidosis doctor and he is sending him straight over to the hospital. There's a lot going on. They said to plan on being there at least a week. On the upside, Methodist hospital is one of the best amyloidosis hospitals. Certainly the best in Houston. The Dr. seems to be genuinely interested, which is unusual among the 7 or so doctors he has already been to. He also seems to be not revealing all he suspects. That is extremely worrisome.
This video explains a lot for the curious...