At 4:45 I went out for a walk around the hospital... at 4:55 Ron said he felt a pain in his right upper chest.  His heart rate went way up 159 and higher.  When I got back, it was still way up... 175.  They are doing an EKG now (5:30).  Doctor has been called... they are drawing blood to check blood enzymes.  I'll update when I know more...