nenek, my understanding is the risk of stroke is from the blood clots that form due to A-fib. I used to be a dancer and then worked in automotive mfg for almost 25 years. Point being, I'm very much in tune with my body and, after A-fib began, could actually feel/sense the blood clots. So specific and unusual that I could have taken a Sharpie marker and drawn a squiggly line on the vein that was throbbing at the left rear of my skull, on my left inner thigh, etc.

So... I now take 1/2 of an adult aspirin every evening. Not a baby aspirin. A normal aspirin that I cut in half with a pill splitter. Your doctor may be able to advise you on this blood thinning alternative. Based on Mother Nature (the bark of willow trees) and so affordable. You may be advised to take a larger dose, e.g., one adult aspirin two times a day.

Bear in mind, I'm NOT a doctor. Just a health nut who devotes 10 hours a week to studying natural health solutions.

1) If the risk of stroke is 2) due to blood clots that 3) are caused by A-fib... By all means do what you can to resolve the A-fib.

Have you been checked for mineral deficiencies? Do you exercise enough, get your heart rate up every day?

Just sharing ideas for future research so you can make the best decision possible.