Well first off I got it wrong. It's Atrial Fibrillation or AFib for short. Hard to pronounce in any event. I.O. did wind up with a pacemaker and oxygen when he came home. He had his first check up today with the doctor. He's doing fine and is off the oxygen too.

Sweetie the cat had to have an increase in his insulin dosage and will have to go back to the vet in a couple of weeks to see if it's the right amount. He doesn't seem to mind the shots, as they're followed by a treat!

Thanks for your concern.