LPNs called to come in and work as Aides? Is this common?

Thank you ALL so very, very much for your insight and wisdom. It means more to this new nurse than you could possibly know. I can honestly say that while on the Dementia Care floor, the aides are so over-burdened, that functioning as one of them, while also performing all of my nursing duties, IS interfering with my nursing abilities. And the other nurses who work on this unit, who have much more experience then me, have the exact same complaints and worries. It is not a matter of "helping out" with the residents. That is absolutely no problem. But my Administrator has made this "her baby", as she quoted to me the other day, and is bound and determined to make this work. The nurse on the Dementia Unit of 17 residents has 2 aides and 1 LPN who must be LPN and aide on the 7-3 shift. I have found one nurse is out on permanent disability and like I said the others have fled. I feel this is unsafe for the residents. I will inevitably miss something important by being so caught up in making beds and serving lunch, while giving out morning and afternoon meds. I plan on looking for other employment. I don't feel this is safe and I am not comfortable with it. I've got to go with my gut.