I too had AVR due to endocarditis and just finished a 6 week regimen of at-home antibiotics through the PICC that I had to administer every 6 hours! My surgery (on 12/12/12) and recovery have gone well to this point, and I hope that you are on your way to recovery as well. Good luck!
What a story. It is great that you continued to insist to your cardiologist about your condition. We truly need to be our own advocates. Since your surgery is tomorrow, we will keep you in our thoughts and prayers for successful recovery. Take care and we hope to hear from you soon.
P.S. My surgery is next week so if you don't hear from me, you will know why.