I went to the VA hospital in DesMoines; Iowa in the fall of 2010 to get a physical to make sure my health was good for a job that required a lot of physical exertion. I was given Ranitidine for GERD; and had an EKG that shown the heart was OK! The end of March 2012 I had a severe heart attack that required 3 stents with 85-95% blockages. I have read on heart related blogs and clinical records that some time the tests show normal and later the health problems show up. I also noticed over the time period that my energy level was decling and I had trouble climbing over two flights of stairs. I thougt that had someting to do with getting older!!! IF YOU FEEL FATIGUED; SHORT OF BREATH AND ESPECIALLY IF YOU HAVE HEART; JAW OR ARM PAIN GET MEDICAL HELP ASAP!! This saved my live but left me with congestive heart failure; Short of breath and still get fatigued easier!!