question: My mother is a 77 y/o women with diabetes and CAD. Several weeks  ago a full cardiac work up was done due to chest pains and irregular heart beat.  An implantable debrillator was placed on 4/15. Discharged from the hospital on 4/17/11.  Saw the MD and cardiologist on 5/2 and they said everything is fine. On 5/3 started having chest pains  went to the emergency room and was admitted.  What would can be causing chest pains if your cardiac enzymes and EKG are normal?