Atrial fribulation

Hi all. I'mean receiving treatment for atrial flutter but wonder if any of you could give me some advice for my mum.

She had a stroke four years ago and has recovered pretty well. Until a few months ago she was stable with her bloods on wafarin with readings of between 2 and 2.2.

She could go every few munths to have it checked but lately her levels keep dropping and the one she had this week was down to 1.7.

Her normal dose is 2.5mg daily and she has to up it 1/2 a mg for a few days and see what the next test shows in two weeks.

I think she thinks she's on a high dose now and that it won't get yonder control yet I've seen people on much higher doses so said not to worry and maybe needs her dose reviewing.

There's nothing really different to her diet from when her levels were stable so is baffled as to what she can do to bring them up again.

Obviously she is at higher risk of having another stroke so worrying about it.

Thank you for any advice.

Vicky.