Hi doctor. Can I ask if you have a heart attack that requires a heart transplant? Is there any other treatment besides heart transplant? Thank you doctor for helping me?

My father had coronary bypass surgery on the background of diabetes and high blood pressure 2 weeks ago, still in the emergency department. Currently, the white blood cell count is increasing day by day, there is no fever, many tests are done, but no microorganisms causing the infection are found, and despite the strong dose of broad-spectrum antibiotics, they do not respond to antibiotics. I would like to ask why the high white blood cell count after 2 weeks of surgery is caused and how is it treated?