Quote from cardiacfreak
Why do you aspirate with subq injections? In fact, I read recently in one of the threads here on AN that aspirating for IM is no longer recommended by the CDC.
I have been surprised by the amount of threads on AN which nurses think no aspiration is necessary for sub-q or any injection, and saddened that this misinformation is spreading. CDC has not made this blanket statement. Follow only what trusted sources say: CDC, manufacturer's guidelines, and nursing texts. I'll copy what I posted to an earlier thread.
Assume all IM (and YES including sub-Q) injections require aspiration unless you find otherwise. There are some exceptions of a few specific medications such as insulin and heparin and the flu shot which don't require aspiration. If you do enter a blood vessel (I have before on both an IM and a sub-q injection), blood will GUSH into the syringe. Capillary blood will be only a small drop/tinge in the syringe which does not gush in with sustained aspiration. Here is my proof regarding aspiration.
Rocephin prescribing information states you need to aspirate: http://www.gene.com/download/pdf/roc...rescribing.pdf
As with all intramuscular preparations, Rocephin should be injected well within the body of a relatively large muscle; aspiration helps to avoid unintentional injection into a blood vessel.
Cimzia (Sub-Q injection) manufacturer instructions states you need to aspirate: Instructions on Using the Prefilled Syringe | CIMZIA® (certolizumab pegol)
Release the skin pinch, keeping the syringe in position. Pull back slowly on the plunger. If blood enters the syringe, this means you have entered a blood vessel. Do not inject CIMZIA. Pull the needle out and throw away the prefilled syringe and needle in a puncture-proof container. Repeat the steps to prepare for an injection using a new prefilled syringe. Do not use the same prefilled syringe.
CDC says you don't need to aspirate vaccines
given in the vastus lateralus/deltoid http://www.cdc.gov/vaccines/pubs/pin...vacc_admin.pdf
Because there are no large blood vessels in the recommended sites, aspiration before injection of vaccines (i.e., pulling back on th e syringe plunger after needle insertion but before injection) is not necessary.
Lippincott says sub Q injections DO NEED aspiration except for insulin/heparin Lippincott's Nursing Procedures - Google Books
(bullet 4-5, won't let me copy/paste)
Why are vaccines given the green light? I'm not sure but my guess is that they wouldn't be harmful to the body if given IV. If anyone else has info on why this is, I'd be interested in reading it! Also, if anyone has any updated trusted-source information which states contrary to the above I'd be interested in hearing that as well!