Fainting while getting blood drawn?

I am 23 y/o in perfect health. I went yesterday with to get some testing done to find out if I am a perfect match to donate a Kidney to my mother. Part of the process is having your blood drawn. The IV Nurse took about 15 vials (she took 30 in total) and I started feeling my blood pressure drop. I told him I felt dizzy and I started to perspire. I don't remember blacking out, but I was dreaming about my dog. Then I hear 10 different voices shouting my name, and I regained consciousness. Was this simply a case of mind over matter because I was watching him take my blood? Or is there a medical explanation (Hence the term MEDICAL, means I want people to reply who know what they are talking about)?
Thanks :]

Happens to me...If I watch, I get all woozy. If I don't watch, I do fine. I have tested this many many times. Since you say you are otherwise in perfect health, and you have to help your mom, I think you should try again and don't watch. I bet you do OK.

Hi - I don't really know the medical reasons behind this but I think it's pretty common to faint when you have blood drawn. Happens to me after about 2 vials so I'm impressed you lasted so long! I wouldn't worry about it if I were you.

Tags

　　Blood Pressure Monitor 　　Autoclave 　　Aed 　　Blood Transfusion 　　IVP 　　IV Nursing 　　IV Injection 　　IV Infusion 　　IV Needles 　　IV Drip 　　IV Antibiotics 　　IV Therapy

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