Addison’s disease is not the only cause of sudden
hypoglycemia, though. Other causes that could have occurred
in your dog’s case include Insulinoma (a tumor of the pancreas that produces excess insulin) and overwhelming infection (possibly secondary to the surgery, in your dog‘s case). There was a sign of possible infection in your dog: “SQ emphysema” in the integument at the suture site, this can be indicative of infection.