On November 2, 2007, I underwent open heart surgery. During the surgery, I was administered the drug Heparin. I had an "allergic" reaction to it. Subsequently, my recovery was pretty dicey. I had days in ICU where I suffered from extreme bouts of heat, so much so I had to have a fan blowing directly on me. That diminished, but a week later, I still had periods of time when I'd go through several hours of extreme heat.