My sister had been feeling strange , dizzy and had a bad headache. She is on medication for high blood pressure, so, took her pressure and it was very high (282) on the top. She went to the doctor and they discovered she has diabetes and wanted her to fast so they could take blood to be 100% correct. Today she want in for the results and she does have diabetes. They gave her medicine and for some reason decided to take an EKG.Results showed a black dot on the lower and upper part of the heart. They are sending the results to a cardiologist. I m so sick to my stomach wondering if this could be something very serious or could it turn out to be nothing. If she had to have heart surgery, would the diabetes be a concern in treating her for her heart or vice versa? My sister is 67 years old. Thank you!