Volumetric pump-height differential doesn't matter and because it is not gravity dependent the pump can be placed below the patient and can pump uphill to the patient.
A non-peristaltic pump- TPN, Plasma, and Whole blood
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Closed system Air Management-fewer occlusion alarms because of the air traps in the IV sets. Once the Air Trap is full, you can back prime without disconnecting from the patient.