After air is removed during circulation, what should be done to the DFR?

After air is removed during circulation, what should be done to the DFR?

• A. Increase to 600
• B. Drop to 300
• C. Set to 0
• D. Set to 100

Answer: (B)

Dialysate flow rate during circuit priming is adjusted after air is removed. Dropping the dialysate flow rate to 300 mL/min is the recommended step because it provides enough flow to flush and fill the circuit safely without causing turbulence or pressure spikes that could re-entrain air. Once the circuit is fully primed and air-free, you can return the DFR to the prescribed therapy rate. Increasing to 600 would be excessive during priming, setting to 0 would stop the dialysate flow, and 100 would be too low to properly prime the circuit.

Dialysate flow rate during circuit priming is adjusted after air is removed. Dropping the dialysate flow rate to 300 mL/min is the recommended step because it provides enough flow to flush and fill the circuit safely without causing turbulence or pressure spikes that could re-entrain air. Once the circuit is fully primed and air-free, you can return the DFR to the prescribed therapy rate. Increasing to 600 would be excessive during priming, setting to 0 would stop the dialysate flow, and 100 would be too low to properly prime the circuit.