When the doctor/nurse takes blood from you, why do they try to find a vein, not an artery? And also why is this mainly done on the arm as opposed to other parts of the body?
In: Biology
Follow up question:
Does anyone know why there’s sometimes a lot of pain after having an IV in for a while? And what it means for a vein to get “tired”?
I had an IV that was fine, then all of a sudden, it felt like they were pumping viscous mercury into my veins.
The nurse quickly realized what it was, and said something like veins get “tired” and switched it to my other arm.
What does that mean?
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