bugmax (love that handle!) --
some of your questions will be answered in the Book of Style. A couple of good books with abbreviations are Neil Davis'
Medical Abbreviations, 14,000 Conveniences at the Expense of Communications and Safety (Ninth Edition)(Neil Davis has a web site) and
Dictionary of Meical Acronyms & Abbreviations compiled and edited by Stanley Jablonski (Hanley & Belfus -- they have a web site), which is more expensive but also more comprehensive. Unfortunately, docs think up acronyms faster than anyone could possibly compile them! My rule for this is: if it isn't in the first few definitions for the acronym I type it out in full the first time, put the acronym in parenthesis next to that, and then use the acronym in the rest of the report. But you need to check with your employer and go with what their preference is.
When you're doing web searches, look at who is publishing the sites. Universities and government sites (the FDA) are usually more reliable. Your favorite search engine will probably not search Medline (
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi )
which is a reliable source for medical information on any topic.
HTH
