Only been home with Nxstage a few weeks and just wondering about a few things (my husband is the one on dialysis) When you have a problem and rinse back and then redo machine can you leave needles in since your rinsed back or do you take them out and reneedle and start all over again? How long can blood actually sit without recirculating if their is a problem before you can continue treatment or rinseback? We were told probably about 2 minutes, we've only had to call Nxstage once and it was during a set-up where their was no rush and after 6:00 and so had to go through answering service (caller #2 in line) then they patch through to whoever is on call, but even in the daytime how long can blood actually sit before returned? Most problems I've read about seem like it would take longer then that to resolve. These are problems we should be asking our nurse (and will) but he's the first patient in Unit training on Nextstage. Thanks in advance for any answers, reading on IHD has made this everything easier knowing in advance what may come up, like the other night's leak in tub.