Which statement correctly lists the maximum time allowed for recirculating blood during interruption?

• A. 15 minutes
• B. 30 minutes
• C. 45 minutes
• D. 60 minutes

Answer: (A)

In dialysis safety, you want to limit how long blood can recirculate in the circuit when the treatment is interrupted. If the machine is paused or lines are mishandled, blood can keep circulating without being cleaned, increasing the risk of clotting and compromising treatment efficiency. The standard limit for this recirculation window is fifteen minutes. Keeping it to this short period helps protect the access and ensures the patient isn’t exposed to ineffective therapy. If interruption lasts longer than that, the proper step is to stop the treatment, troubleshoot the cause, and restart or re-establish access rather than letting the circuit continue to recirculate.