a few things to consider; several lines, meds intended for intravenous use accidently injected into an epidural for example. 2. pharmacy- makes mistakes all the time! pharmacy puts the med in the wrong container.
Also, drug interactions within the line due to inadequate flushing with normal saline between drugs. Another issue; meds are mixed in the med room, not labeled then carried to bed side- easy to forget what drug is in which syringe with several being given at the same time. Then, some meds are harder to draw up without the needle to acess the container. Some meds are in glass ampules that are broken, then nursing has to use a filter needle to keep the glass out of the med that ends uo in the syringe. I hope this helps...