The Baxter Sigma Spectrum infusion pump has a rate accuracy of +/-5%. Over the course of extended infusions (12-24 hours), a +5% variability can cause the infusion to end up to 2 hours early (entire bag is infused, but over less time). This is a concern for abrupt discontinuation of parenteral nutrition.
If you have experienced this phenomenon, with the Sigma or otherwise, I'd be interested to hear how you have mitigated this. We have discussed increasing overfill for all PN orders or patient-specific PN orders.
Patti Cutting, PharmD, BCPPS
Children's Hospital Colorado