This is just another way to drain out the pee. I assume harry is talking about a nephrostomy catheter rather than a urinary catheter (up the gentlemen's japs eye)
All the catheter will, do, is allow the filtering of my blood, somehow - via the peritoneum, to remove the toxins in my blood, which my ineffective kidneys are unable to remove. The machine pumps the cleansing fluids into my peritoneum, leave it a while, it does what it does, then pumps it back out. The peritoneum, is a layer, like a layer of fat, between your skin, and stomach. It has nothing to do with urination, or peeing.
Nephrostomy - I had to look that up, and no, not that. This is for kidney failure, my kidneys are no longer effective, at filtering the toxins from my blood, and therefore an alternative way needs to be used, to filter my blood. It's called dialysis. They offer one of two methods - peritoneal dialysis, done DIY, at home, as you sleep, or hemodialysis, where you go into hospital and they do it, similar to giving blood, but the blood just goes back in, after filtering. Of course, being keen on DIY....
Once they get around to the op to fit the catheter, once it has healed, I'm told - they will transport Av and I, over to a specialist centre in a hospital in Manchester, put us in a suite for a week, whilst they teach us both to set up, and operate the dialysis machine. They seem to insist that you must live with someone, able to keep an eye on you, and offer some supervision.
As my kidney failure has progressed, more and more of the toxins have remained in my blood. I had connected it, before, but It's those toxins, which have been causing all the weird mental episodes I've been suffering recently. The toxins can affect the brain, but why didn't they warn me to expect this? Why was I left struggling for months, struggling to diagnose it myself?
For each monthly appointment at the moment, they want me to turn up knowing my weight, some home BP readings, a measure of liquids in, and liquid out (urine) over 24 hours.