question: My father, 69 and diabetic for the past four years, suddenly developed anxiety attack, pain the wrists and back so we took him to hospital where the ECG. showed some irregularly but all the other tests came back normal . Doctor did an angiography and discovered blockage in all three veins - 85%, 90% & 100%. My question is one, is this a common occupancy and two is a bypass surgery the only option?