And after all her time there she's affectionately known as the matriarch of the unit, happy to pass on advice and tips to those coming in for the first time.
"Some people think kidney dialysis is the end of their lives. But I want to tell them it isn't at all. I knew two people that were on dialysis when I started so I was pretty prepared," she said.
"Really dialysis has given me more time to spend with my family. I never thought I'd live to see my great-grandchildren, but I have. I've got nine of them and if it wasn't for dialysis I wouldn't have spent any time with them. I'd have missed all that enjoyment.
"This has enabled me to have nearly 19 years extra time on Earth and I've met some absolutely amazing people here. I never thought I'd see my 80th so to spend it here with all my renal family is wonderful."
Barbara is obviously well thought of by all at the unit judging by all the cards, bunches of flowers and birthday goodies surrounding her on Thursday.
She had a kidney transplant in 1996, but it failed after five years, so she accepts that dialysis three times a week is her only option, but she's not letting it hold her back.
"It doesn't mean you can't do other things and many people on dialysis continue to have jobs and live their lives around it. It's not the end of your life having dialysis. It could be just the start of another chapter," Barbara said.
"But you have got to obey the rules. The doctors and nurses know what they are talking about so you have to follow what they say.
"Dialysis is much better now than it was when I first started. The machines are much more advanced and the knowledge is far superior. At first it's really tough, but you will get over that."