The machine is configured to alarm when the Venus pressures crosses 380. For arterial pressure it alarms if it crosses 225. NxStage technical support suggests that anything below 380 for venus pressure is fine, however the dialysis nurse thinks anything above 250 for venus pressure rate is bad.
The max blood flow rate (BFR) is 350.
In the last week the venus pressure is consistently above 300 (300-350) when BFR is 350. but the machine never alarms as configured.