*Average reflux as measured in 4Fr PICC; data on file at BD.
Syringe-induced blood reflux occurs during a flush procedure when the rubber stopper meets the end of the syringe.
Since it is rubber, it will compress and rebound when pressure is released; creating a vacuum that draws blood back into the catheter.1
To overcome syringe-induced blood reflux use a prefilled syringe for catheter flushing that is designed to overcome this problem.1
Positive displacement valves address disconnect reflux, not syringe-induced reflux.2
BD PosiFlush Saline Syringes are designed to eliminate syringe-induced blood reflux*,
enhancing catheter maintenance protocols.
Graphic depicts the average amount of blood aspirated into the catheter
upon completion of flush procedure if positive pressure technique is not correctly applied.
* Data on file
1 Hadaway L. Heparin Locking for Central Venous Catheters. Journal of the Association for Vascular Access. 2006;4(II):224-231.
2 Hadaway L. Technology of Flushing Vascular Access Devices. Journal of Infusion Nursing. 2006;29(3):139-140.