This is regarding my husaband. Age 64 1/2, by-pass surgery in 2004 (6 bypasses) and major bypass failed. He is also diabetic - on insulin, oral and 75 units 70/30 BID. Weight 240, Height 5'11". Right side of heart is functioning at about 42% (as of March 2011). Woke up last night with headache, and complaining of hearing heart beating (washing machine sounds). Blood pressure at 2 AM was 136/66 with heart rate of 67. At 4:30. still hearing heart beating, still has headache. (Attempting to make cardiologist appointment this AM). Should he go to ER, wait on Dr? What is cause? Treatment?