my veins have always had good return when giving samples, and this was in the big through your elbow vein. antecubital. my preferred placement is basilic. the large looking mid-forearm pinky close to the elbow but not too close to it i can still move my arm without pinching the cath or hitting a valve. I thinkthat's antecubital and the basilic but it has been a long time sing i taught myself anatomy.

as far as volume and force and velocity and delta vee i guess this was excessive even for me. i know there's some blood thinner (warfarin i'm guessing) coating around a lot of IV catheters to help them last a little longer, but all i can explain is we used a larger cath (20 instead of 16) because i was really dehydrated when i arrived and i had just gotten pumped with probably 6 liters of saline because that was the last time my kidneys were going to feel sated until the next time my shitter got jammed.