My dad is a 53 y/o M that called me complaining of acute onset generalized weakness, fatigue, excessive hunger, and shortness of breath with exertion. He is status-post MI in 2013 with PCI of the LAD with a history of endocarditis, chronic back pain, sarcoidosis. Surgical history including spinal fusion of the L4/5 vertebrae, exploratory appendectomy, partial discectomy for herniated disk at L4/5 (prior to the fusion). He has rx for NTG prn and 81 mg ASA qd and also takes Tylenol 3 prn pain for the back injury. He originally reported HR at 140 and irregular and is still irregular but not as fast. I recommended that he seek treatment by a physician but he wants to wait until after he s eaten. What could be going on?