My last bloodwork came back with low potassium levels and elevated kidney function tests. I am taking diuretics for edema which I have after hip replacement surgery, that could account for the low potassium, but I don t know what the elevation in my kidney function tests mean. I had been in paroxysmal A-fib, well controlled, after the surgery the A-fib is now chronic. I don t know what all this means or if it is connected.