Ok, I know this is a simple thing, but how do you draw blood from a PICC? This is how I do it:
Flush PICC with 10cc saline then pull back 10cc blood (to waste)
Hook up that vacuum-thing and put the blood into the tubes
Flush with 10cc and change the end piece (cap thing) of the PICC
Am I doing something wrong? (I left out obvious parts like wash hands, glove, check armband, swab with alcohol, etc)
Also, if a pt is getting a heparin drip, can you draw from the PICC or do you always do a peripheral blood draw for Ptt? If you do draw from PICC, how long do you stop the drip for before?
Thank you - when I ask my fellow nurses I get a million different answers and I can find no place where hospital protocol is written (I work at a s h i t hole of a disorganized place)
One thing to remember about heparin is that it has a very short half-life, so stopping the infusion for too long could significantly alter the ptt results. Again, with a central line after only a minute a couple liters or more of blood will have flowed by the catheter tip, making 2 or 3 minutes more than enough time to flush the drop or two of heparin the would have infused in the last few minutes.
I'm not sure why you would stop the infusion at all if you are drawing from another site all together, unless you are drawing downstream from the infusion.
Last edit by MunoRN on Feb 2, '12