In case you haven't run across this thread yet, I recommend you give it a read.
http://valvereplacement.com/forums/showthread.php?t=17116 Those of us who take Coumadin find that many in the medical community have an exaggerated fear of the drug. Some of the reasoning may be that some only see those who have problems with it and it skews their perception. It's kind of like our Anti-coagulation forum here. If you read it, you'll see lots of post with questions or issues with high INR or low INR, but the reality is most of us don't have a problem with it. People don't post just to say "I'm in range yet again! woo hoo!"
Please understand that when those of us with mechanical valves post information or debunk misinformation, it's not done to try and talk the originator of the thread into something else. It's done more so for those who may be lurking and reading and we don't want myth and error to be taken as fact and protocol by those who don't join and ask questions. We also don't like to see anyone become so terrified of having to take the drug, and only find out that fate has caused something to occur that they end up on it. It's probably one of the most misunderstood drugs around. It's a drug that allows you to live a full life, it doesn't take your life.
I've been on Coumadin for over 15 years. We have two members who have been on it for over 40 years. I don't bleed easily, nor do I bruise any more easily than I did prior to my VR. (I've always been somewhat of a banana! If anything, I seem to have less bruises now than I did in my younger adult years. Maybe that's because my children are grown!) Many in the medical community will lead you to believe you become a hot house flower once you start taking the drug. Nothing could be farther from the truth.
Do your research on the valves. I recommend forming a Plan A and Plan B with your surgeon. There are very sophisticated tests that can give doctors a pretty good idea of what they will face once they open you up. But the reality is that they won't know for certain what they face until they get in there and what they once thought would be an appropriate plan of action may need to be adjusted in the OR.
Since you have a bicuspid valve, I would recommend reading posts by Arlyss. She has many many helpful suggestions and information for all the possible nuances that seem to differentiate bicuspid valvers from other valve issues. I know that one of the things she recommends is that you have your aorta assessed because some bicuspid patients can have aorta issues that may need to be dealt with at the time of surgery.
And most importantly - during this whole education process, remember this is all information that you are taking in to improve your life and save it. For doing nothing is the worst choice someone in our situations could make.
Best wishes.