I have PV and tend to need venesection every 8 weeks. I'm always well hydrated, I keep my arms warm and moving before venesection, but my veins are small and 'kinky' and after a few minutes of the needle being inserted they blow! For a long time now they have failed to get the required amount of blood out of me.
Many have tried and failed so it's not a user issue, it's my veins.
During the last attempt on Monday the haematology nurses agreed that next time I will be cannulated. Which I have no problem with as they have found a perfect vein near my wrist.
My question is why isn't a cannula automatically used for venesection? Is there any specific reason why they use venesection over a cannula?
Wishing you all a wonderful day.