Job search question

I am currently looking for a new job and have been applying for part time positions even though I really want full time hours. Most hospitals don't have many (if any) full time positions open, so I'd like to get my foot in the door any way possible. My question is this - if the HR person asks me what type of hours I'm looking for, should I be up front and state that I want full-time, even if it's a PT position I've applied for? This hospital has several per diem positions posted as well, so I'm guessing I'd be able to pick up hours there. I just don't want them to look at me and wonder "why is she wasting our time?"
When they ask what shift you prefer or looking for tell them you are not picky. You will take whatever available. I was previously applied for FT then they told me they did not have FT at this moment but PRN. I said sure I will take that. What you want to do is make yourself more marketable, more flexible to potential employer. Once you get your foot in the door you can always apply for PT or FT later. It easier to transfer then trying to get hired.

You can state that you'd like a full time position without it sounding like you don't want part time."What kind of hours are you looking for?""I'm very willing to be flexible with my shifts. I understand this is a part time position but I definitely would not be opposed to working extra shifts if the unit has openings. I would like to work full time if a position becomes available, but the hours are less important than working in place where I can provide high quality nursing care."