Sorry I deleted the actual post I should of responded to so I will put this out there. A month ago my dad without telling anybody had chest pains and pains in both arms at seperate times for 3 weeks well middle of night he could not catch his breath and finally got scared enough to call 911 and go to hospital, after all the tests were run everything came back negative, then somebody made decision to put dye in his blood and look for a blockage and sure enough 1 artery was about 60 percent plugged and so they decided to put a stint in, next day no pains and was up walking around. The doctor said he never had a HA but that artery was telling his body there was a problem and he was well on his way to a HA good luck dave