I always let the tiny but of air out of the medicine pump when im on home iv's , before i hook it up. I never liked watching ANY amount of air go in my veins , even though i know it isnt harmful . Just knowing it doesnt belong there gives me an uneasy feeling so i make sure its all out before i get hooked up. Nope you're not super paraniod.... just cautious.... and that can be a good thing <img src="i/expressions/face-icon-small-wink.gif" border="0">