I thought folks on coumadin had to go in for regular testing (INR). Are they doing that to make sure your blood is kept at the right level? The effectiveness of coumadin can be affected by what you eat, other medications, etc. which is why they like to test it.
Ask your doctor about your INR levels and what to do if you have an injury. Most small injuries will respond to applied pressure and stop in a short period of time. Obviously, if you're bleeding excessively from a deep cut or you develop a large hematoma under the skin, get to the doctor or hospital.
Yes, it is key to keep your INR in range, to prevent the clotting to from being lowered too much. My INR range is 2.0 to 3.0, with 3.0 being the maximum (or minimum clotting) number. I generally fall about in the middle, lucky me. I don't have any restrictions on my diet other than to be consistent in things like greens (salads mostly) and a few other high vitamin K foods. If you can be consistent in your intake of vitamin K, the coumadin (warfarin) does can be set to work with that diet.
Given you have lone or intermittent AFib it may be you'll get a lower range, I don't know, but that would be good. Some, mostly younger I think, may get by taking just an aspirin a day. The step up to an anticoagulant is driven by the number of risk factors for clot formation. AFib is a big count, age is another I think. As said, I also suppose (it seems reasonable) the frequency of AFib is a factor too. I am in permanent AFib. I take a half aspirin and 5 mg of warfarin a day.
As for bleeding, try not to cut yourself, I'm serious, I try to be more careful with knives and saws, etc. When I do get a nick that draws blood I find a little of the usual stuff stops the bleeding fine...pressure directly to the wound.
I'm also an afib sufferer and have been on coumadin for 6 years and haven't experienced any excessive bleeding or bruising with it. I was pleasantly surprised with how little it changed my life. I generally undergo a PT/INR measurement every 4 to 6 weeks and there seems to be no problem maintaining an INR level between 2 and 3. I'm 67 and also run and exercise every day. I also eat salads, greens and vegetables daily and haven't had to limit my diet because of coumadin. The key, however, is to maintain a consistent level of vitamin k containing foods.
Overall, the biggest inconvenience of coumadin usage is the need to undergo periodic INR testing.
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