Kind of a silly question, or it makes me feel that way.
I've been doing IV's for 3 years, but recently I've been getting a lot of bright/red blood return when my IV's. I palpate for pulsation, check for valves, follow basic anatomy with my insertion. What is the science behind this? Some IV's I place, I have the dark venous blood return. While others, it is bright red, and looks arterial. It has me a little freaked out at the moment, making me doubt my IV skills.
For example: I placed a right forearm IV. I visualized/palpated the vein, no pulsation, and it was definitely the cephalic, it was just below the surface, painless insertion. The blood return was BRIGHT red. Maybe it is all in my head?