I am also a nursing student and graduating in May of this year... I asked because I have been taught not to aspirate, and never to expell the air because the air is pushed in last and keeps the Lovenox where you want it. The whole reason that I brought this up was because yesterday, I had personal experience receiving Lovenox... The RN who administered the Lovenox expelled the air, and I flipped! I asked why she was expelling the air and she said you always expell air with injections. I informed her that this was not the case with Lovenox. She was really defensive and said it was not necessary. Further more, she told me as she was injecting into my abdomen that she was aspirating, and that would give me the air bubble that *I wanted*. I was so mad! The injection hurt so bad! I had pain at the injection site for hours. After the injection, the RN basically told me that wherever you go to work things will be different from school, and that's something that I need to learn *right now*. She totally reprimanded me for calling her on it, and made me feel like I didn't know what I was talking about. Grrrr... I'm still mad about. Melissa