... Keppra. I also had an aorta bypass surgery when I was a child and I have a bicuspide aorta. Three days ago I started feeling strong palpitations in my back where the scar form the surgery is. These palpitations have not stopped. I'm wondering if the Keppra could be causing these palpitations and if I should stop taking it. I called the doctor but I haven't heard anything back from him yet