Thans to all whose supportive replies strengthened my reslove to go ahead with the knee replacement three weeks after cardioversion for possible perimitral AF.
The good news is that the op, performed under spinal anaesethesia, went smoothly with no sign of AF. I must have lost a fair amount of blood and needed a couple of units top up so was relieved no AF was triggered in spite of some pretty low BP readings.
4 weeks on, I can't believe how good my new knee is. Yes, I work on range of movement and have done a set of exercises when ever opportunity, energy level and incliniation coincide. I am now walking a mile, and using an exercise bike, daily. Pain levels are easily managed by a couple of paracetamol morning and evening topped with a tramadol at bed time. Like others, I had to be insistent with the hospital about not wanting to take ibrupruoen because of its association with AF. I have a sneaky feeling that thirty years of periodic dependence on ibruprofen to control knee "flare ups" may have been the trigger for my first episodes of AF.
My consultant suggested I rent an ice and compression machine. While not cheap this machine more than compensated for not being able to take anti inflamatory drugs. I used it throughout the night- timed to ice, compress, and rest in sequence, and my post op swelling went down very quickly making it easier to increase my range of movement. It also made me less reliant on pain reducing meds.
In the mean time I'm stil in NSR and hoping my EP will reduce my dosage of flec and bisoprolol which makes me rather tired.
I hoping to get the go ahead to drive and planning to be back in my kayak in May. The new knee is already performing better than the one i made do with for all those years.