Yeah, you're right Cheryl. IV cannulas can be smaller for different types of infusions. It's taking blood that requires a certain size needle.
My hospital had a policy that we could have three attempts at blood taking or cannulation but I never had more than two attempts.
I figured after two attempts that the patient had lost confidence in me and would probably prefer someone else to try and why would I want to put myself through the trauma of having a third attempt when I was obviously having difficulties through either difficult veins or just me having a bad hair day.
Copper deficiency bone marrow failure (MDS RAEB 1), neuromyelopathy.
FISH reported normal cytogenetics but gene testing showed
Xq 8.21 mutation