I got a chronic dialysis nurse job in Weymouth in October and it's been difficult after years of acute care med/surg/ER nursing. I am getting my training on the job and I can definitely see where this could NOT be taught online. If you learn like I do, none of what I learn would make sense in so far as managing the machines, the accesses, the turnover without being there.
This is very, very challenging but I'm starting to really like it. There is a shortage of dialysis nurses so I would check in at DaVita or Fresenius websites to see what's available. They're always looking.
Hope this helps.