I have Type II diabetes and had quadrupal bypass surgery in January 2006 at age 68. I also had an ICD implanted 3 days after the bypass surgery. Eleven months later, at age 69, I had my second open heart surgery to replace one of the bypasses that had failed, and to perform transmyocardial laser revascularization to an area of the heart that couldn't be easily reached with a bypass graft, and to replace a very stenotic aortic valve. The recovery from both surgeries was fairly smooth with fewer bumps than I imagined there might be at my age. While in hospital my blood surgar was monitored with finger sticks several times a day and controlled with my oral medication supplemented with small injections of insulin when necessary. When I returned home I went back on oral diabetes medications and my diabetes continues to be well controlled. If your mom's diabetes is fairly well controlled with oral meds they will closely monitor her sugar during her time in the hospital for her surgery and initial recovery and she shouldn't have any problems due to the diabetes. Everybody has concerns when facing OHS; but, if your mother is in fairly good health, other than the heart problem, she will due just fine. You all will be in my prayers.
Jim