What is the longest you can survive on peritoneal dialysis ?

Indefinitely: It is impossible to predict how long any individual may survive most medical conditions, as there is too much variation in tolerance, genetics, associated factors, and the human spirit! i've never seen an "expiration date" on any patient and would question anyone who believes there are specific time frames for survival in any given person with any disease!

PD survival: Patients have survived longer than 20 years on PD - Health of abdominal membrane matters - avoid infection, avoid high glucose use; keep weight controlled; do your best to maintain urine flow