I don't think my issue was just like yours, but I did get rejected by the hospital EKG. They said that there was an abnormal wave and wouldn't give me the OK. They said I would need to go to my PCP for an EKG to see if he would okay the surgery. I did, and he did. Apparently the strange wave was a result of my asthma, and the resultant size of my lungs and pressure on the heart. Who knew?
I hope you are cleared and can go forward with the surgery as planned! Keep us informed!