thanks everyone for your replies. I've been "out of the loop" for a while.With my limited understanding of fluid physics I think: the bigger the needles and the slower the BFR, the less turbulence and stress on the inside of the vessels. But, depending on the size and condition of your access, the bigger the needle, the greater risk of damage as well.At this point, I'm at a loss as to what is the best route for me. I hope I can establish buttonholes with 16G, run as slow as possible while still getting adequate dialysis, and then perhaps up to a 15G some time in the future, when I can do it myself and am sure my vein is ready. And stay with the slowest rate that works for me.Thank you all so much for your input!
We use 14 gauge and our nurse told us we could run at 550 bfr. I was a little dubious at first, having read a lot of admonitions against the higher blood flow rate. I asked her if it would damage his buttonholes or blood vessels and she said no. Now, I trust this woman and she's shown her intelligence and reliability in so many ways. And she regularly attends NxStage training and is in constant communication with them. We have been doing this for a few weeks now and no issues as far as his access or health that I can detect. We are doing 30 liter treatments and processing around 80-85 liters of blood per treatment.
If you are on Home dialysis don't you use the button hole? It would seem you could use 16ga or whatever you wanted in the blunts.