hello i am a 43 year old woman who was diagnosed with NSIP, as a side effect of prednisone my pottasium depletes and i have to take 4x sando k daily , once my pottasium level was 2.1 which we think triggered off an AF episode , and i ended up in hospital , i am on 5mg bisoprolol , my question is that i have plucked up the courage to go on holiday and i am going to fly for 5 hours, how safe is it ? also i have regular palpatations and sometimes they last for half an hour continuously ... thank you