When do you refer for peritoneal dialysis catheter placement in a patient with advanced chronic kidney disease who does not currently have dialysis needs but does have a progressive decline in eGFR?

The question, of course, is whether to place the catheter early, when the patient does not yet require dialysis and then need to provide catheter care (e.g., weekly flushes), or to delay catheter placement and risk needing to start urgently, or, much worse, risk placement of a tunneled dialysis cath...