My understanding is that if your PT INR is above 2 then your a-fib is unlikely to generate a clot. The whole idea is to keep your PT INR score in the "theraputic" range of from 2 - 3. BTW, what anticoagulant are you taking? Coumadin (warfarin) is effective but you have to monitor your PT INR pretty closely. No one I know has been on other anticoagulants so I have no experience with them.
Best wishes,
Bionic Bill
(3 months paced and going strong)
The rsik of stroke is higher when in Afib than when not. However, for true statistics, i recommend you look on the american heart association website under their entry for a-fib. Being on blood thinner is the right course of action. Talk to a professional about the true risk differential. Best wishes.