I really am to go home today. My potassium was proved to be low - the blood test illustrated that. I've been given tablets to sort it out. My heart feels completely normal now.
The bulldog clip around my chest feels less tight today and I do have every confidence that I'll be fine at home. There's no real need to cough either - the annoying post-surgical burble has gone. Sleep is something that my body requests every couple of hours so I just make myself comfortable and dose.
P.S. Another little heart flutter incident this morning - nothing terrible though. I'm to go home with a beta blocker and asprin. These are to mitigate against the chance of untoward clots in this post-surgical period.