I thought I'd do a little list here of medical acronyms, as well as code words and phrases that nurses use:
DNR - Do not recuscitate
NPO - Nothing by mouth
PO - By mouth (per os)
IM - Intramuscular (this is a regular shot)
SL - Sub Lingual (under your tongue)
SQ - Subcutaneous (under the skin)
IV - Intravenous (you know what that is)
CD - Circling the drain (hopefully this person is DNR)
OU - Both eyes
OD - Right eye
OS - Left eye
PIA - Pain in the Ass (referring to patient or family)
Crock - Someone who enjoys medical care and gets a lot of it - Usually also a PIA