some states are more restrictive than others
for LPNs, but my first reply will be to tell you to try looking at your states nurse practice act.
i know where i lived (prior) in another state, we were not allowed to touch any type of central line, including PICCS, and we also had to be IV certified. they had lots of courses in nursing homes and hospitals to train the lpns, though it usually only comprised of an RN educating you about different things.
where i work, PICCs and also to a lesser extent regular central and jugular lines, are accessed by LPNs. lots of people who come in for 6 week or longer abt (lots of vanco and MRSA) treatment.
is there a pharmacy rep or whoever is in charge of your inservice/education department able to help you and your fellow nurses learn more about these types of lines, and what you flush them with? there should also be a policy and procedure about how often to flush the lines, with what solutions, and how often we do the dresssings, and who is able to do them.
if you want more help, i would be happy to send you what i have available on my computer about these types of lines and their care. i had it for school. (i'm an lpn for 10 years about to graduate with my RN).
good luck to you, and also some words of advice for you: don't do anything you haven't been trained to do or that you don't feel comfortable with! it's your employer's responsibility to educate you about things you have to do in your job/as a part of your job. but also, for your own knowledge, know your nurse practice act and what is allowed in your state! there is a list of the websites for all the nation's boards of nursing on this site.
hope this helps a little bit.