This is terryj wife. My husband had his AVR on 09/11/01. After a few months of low INR counts we finally got it to stay between 2.5 to 3.2 taking 7.5 mg. per day. Our GP has been monitoring his coumadin but we have had a problem with them getting his results to us. I have to call them everytime to get the results. I told them we chart it and the surgeon said its the most important medicine he takes. Well, three weeks ago we went in for his six month check up and the doctor said it was 3.6 at his last check and he wanted to drop him from 7.5 to 6.0 mg. for 2 weeks and retest. I tried to tell him I would feed him a few extra salads and it would probably be fine at his next test but I was basically told he was the doctor. After 2 weeks he was at 1.9 and wanted to keep him at 6.0 and retest at 4 weeks. I promptly went over his head and called the surgeon. I was told that I needed to find someone else to monitor his coumadin. I am changing doctors on Monday. We are doing 7.5 four days a week and 6.0 three days a week and will have the new doctor retest in 2 weeks.I guess mostly I just want to thank you all. I have been lurking since right after his surgery. I read and printed all the Bum Tickers info before his surgery. I feel like I know more about coumadin monitoring then most doctors and I feel I owe most of it to you all.