More info. on Grandfather's progress. . . Grandma and I went to the ICU unit and had a nice visit with Grandfather.  He was happy, alert and talkative, but after about 15 minutes, he fell asleep.  We talked with Dr. Nasiff, the cardiologist, and she reported on the angiogram procedure, what the prognosis is, etc.  It's tentative that Grandfather will be able to be released from the hospital by Thursday or Friday. . .  he may need to go to a rehab center initially to receive the care he needs, although hospital care may not be needed. . . we'll have to see.
More update info...