A question has come up regarding the drawing of a Vancomycin Trough from a central line into which the Patient was getting his Vanco doses. This nurse felt that some VancoÂ might still be in the line and would interfere with and make the Vanco TroughÂ level higher.
If the central line is a double lumen, the blood can be withdrawn from the lumen not used for Vanco, but if the line is a single lumen - what are some of you doing? What is your policy & procedure?
Are youÂ flushing the single-lumen central line with Normal Saline 10 mls, and drawing back at least 5 mls bloodÂ into the syringe for discard,Â then drawing the labs using a vacutainer or syringe, and then flusihing the line afterwards with N/S 20 mls, followed by Heparin, as needed?
Â If the single lumen line is flushed properly before and after blood draw,with appropriate blood for discard - Â do you think this is acceptable?
Â One nurseÂ told me that some doctors only want a "peripheral" Vanco Trough level when there is onlyÂ a single-lumen central line. Our policy here at work isÂ "no drug levels from lumens that were infused with that drug unless ordered by a physician.
What are you all doing/seeing out there in your Infusion practice? Thanks, Wendie S-M