I think it depends on what you are having transfused/infused as to how small a needle they can use. My veins look good but they "roll" easily. After a few nasty experiences one of the nurses in WA told me to ask for the yellow (child's) catheter, which is OK for Intragam (from plasma) but it might be different for red blood or chemo delivery? Some nurses are just better than others at inserting catheters too. In Australia there seems to be a policy that if a nurse doesn't get it in in 2 tries, someone else has to take over.
Dx MDS RAEB 10% blasts + hypogammaglobulinemia, Sep 2011. Jan 2012 BMB - blasts down to 2% w/out treatment so BMT cancelled. Re-diagnosis RCMD. Watch and wait from Feb 2012. IVIg 5-weekly. New diagnosis Oct 2019 AML 23% blasts in marrow, 10% blasts in peripheral blood.